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Day 1 > Organic Chemistry > Flashcards

Organic Chemistry Flashcards

1
Q

In benzene, what is the valence bond hybridization on each carbon atom?
A. sp
B. sp2
C. sp3
D. spd

A

B. sp2

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2
Q

Which of the following is called methyl chloride?
A. CH3Cl
B. CH2Cl
C. CHCl3
D. CCl4

A

A. CH3Cl

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3
Q

Which of the following is propanone?
A. CH3COCH3
B. CH3CO2H
C. CH3CHO
D. HCHO

A

A. CH3COCH3

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4
Q

What class of compounds is represented by the type formula ROR’?
A. esters
B. ketones
C. ethers
D. aldehydes

A

C. ethers

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5
Q

Name the compound CH3(CH2)COOH.
A. benzoic acid
B. carboxylic acid
C. octanoic acid
D. maleic acid

A

C. octanoic acid

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6
Q

Name the compound (C6H5)2O.
A. diethyl ether
B. diphenyl ether
C. diethyl amine
D. benzyl alcoho

A

B. diphenyl ether

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7
Q

Which of the following is bromobenzene?
A. CH3CH2NH2
B. CH3CH2CHO
C. C6H5Br
D. C6H11Br

A

C. C6H5Br

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8
Q

Which of the following is an amide?
A. CH3NH2
B. HCONH2
C. CH2O
D. CH3OH

A

B. HCONH2

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9
Q

Which of the following is an amine
A. CH3NH2
B. HCONH2
C. CH3F
D. CH3COOH3

A

A. CH3NH2

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10
Q

What continuous-chain hydrocarbon is isomeric with 2-methyl-3-ethylhexane?
A. octane
B. nonane
C. decane
D. dodecane

A

B. nonane

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11
Q

Give a straight-chain hydrocarbon that is isomeric with 2,2,4-trinethylpentane
A. heptane
B. octane
C. nonane
D. decane

A

B. octane

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12
Q

How many isomers are there corresponding to the formula C4H10O?
A. 4
B. 5
C. 6
D. 7

A

D. 7

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13
Q

How many structural isomers are possible for C2H4Cl2?
A. 2
B. 3
C. 4
D. 5

A

A. 2

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14
Q

Which of the following compounds can exist as geometric isomers?
A. CH2Cl2
B. CH2Cl-CH2Cl
C. CHBr=CHCl
D.CH2Cl-CH2Br

A

C. CHBr=CHCl

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15
Q

Which of the following molecules is a Bronsted base?
A. C5H5N
B. C2H5OH
C. C6H5OH
D. C2H5OCH3

A

A. C5H5N

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16
Q

What kind of hybrid orbitals are formed on the carbon atoms in cyclopropane?
A. sp
B. sp2
C. sp3
D.spd

A

C. sp3

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17
Q

Which of the following involve redox reactions?
A. evaporation of water
B. production by lighting of ozone from CO2
C. reaction of H2SO4 with NaOH
D. burning of gasoline

A

D. burning of gasoline

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18
Q

It is hard naturally occurring trans polyisoprene.
A. hevea rubber
B. gutta percha
C. ABS
D. PPO

A

B. gutta percha

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19
Q

A polymer produced by the condensation of terephthaldehyde and methyl-1,4-phenelene diamine.
A. tupperware
B. aramids
C. Vectra
D. polyazomethine

A

D. polyazomethine

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20
Q

Which of the following structure represents that of vinyl chloride?
A. C2H3Cl
B. C2H2Cl2
C. C2H2ClF
D. C2Cl4

A

A. C2H3Cl

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21
Q

It is obtained from milky secretion of various plants such as the tree Hevea braisiensis.
A. natural rubber
B. PAI
C. Xenoy
D. collagen

A

A. natural rubber

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22
Q

Polymers which are capable of forming an ordered solution.
A. mesogenic
B. hematic
C. thermotropic
D. lyotropic

A

D. lyotropic

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23
Q

Which of the following is a crystalline polymer which is used primarily as a film?
A. PVC
B. PVF
C. PTFE
D. TFE

A

B. PVF

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24
Q

Polymer which are capable of forming an ordered melt.
A. mesogenic
B. hematic
C. thermotropic
D. lyotropic

A

C. thermotropic

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25
Q

A polymer composite used as food containers for ovenable dishes.
A. fiber glass polyester
B. BMC polyester
C. SMC
D. PTFE

A

B. BMC polyester

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26
Q

In chemical reactions involving alkenes, halogen atoms can replace hydrogen atoms. These reactions are called
A. combustion
B. dehydrogenation
C. substitution
D. addition

A

A. combustion

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27
Q

Which of the following is the most acidic?
A. 1-butanol
B. 2-butanol
C. tert butanol
D. phenol

A

B. 2-butanol

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28
Q

Bonding between carbon atoms
A. electrovalent and strong
B. electrovalent and weak
C. covalent and strong
D. covalent and weak

A
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29
Q

The formula of acrylonitrite
A. C3H4N
B. C3H5N2
C. C3H3N
D. C2H2N

A

C. C3H3N

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30
Q

Which of the following is not an aliphatic hydrocarbon?
A. n-octane
B. n-tridecane
C. propylene
D. toluene

A

D. toluene

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31
Q

Which of the following compounds is incorrectly named:
A. p-chloroaniline
B. ethyl benzene
C. 3-methyl pentane
D. 2-ethyl butane

A

D. 2-ethyl butane

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32
Q

An isomer of ethanol is
A. Methanol
B. ethylene glycol
C. dimethyl ether
D. acetone

A

C. dimethyl ether

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33
Q

It is the attraction between like molecules.
A. absorption
B. diffusion
C. adhesion
D. cohesion

A

C. adhesion

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34
Q

The hydrate named as sodium carbonate decahydrate is commonly called
A. baking soda
B. washing soda
C. soda lime
D. caustic soda

A

B. washing soda

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35
Q

The energy needed to remove an electron from a neutral atom is
A. electron affinity
B. electronegativity
C. first ionization energy
D. ductility

A

C. first ionization energy

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36
Q

The electron configuration of phosphide ion is (atomic number = 15) is
A. [Ne]3s2
B. [Ne]3s23p2
C. [Ar]
D. [Ne]3s23p3

A

A. [Ne]3s2

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37
Q

Two electrons in the same atom that have identical values of the quantum numbers n,l and ml are said to be in:
A. the same shell & subshell but different orbital
B. the same shell, subshell & orbital
C. the same shell, but different subshell and orbitals
D. different shells, subshell and orbitals

A

B. the same shell, subshell & orbital

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38
Q

Oxides that react with water to form acids or that are formed by the removal of water from acids, are known as
A. anhydride
B. basic anhydride
C. acid anhydride
D. salt anhydride

A

C. acid anhydride

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39
Q

The product obtained by the fermentation of wet cellulose is
A. ethane
B. ethyne
C. methane
D. ethane

A

C. methane

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40
Q

The high polymer of chloroprene is known as
A. 2-chlorobutadiene
B. Narcylene
C. Neoprene
D. vinyl acetylen

A

C. Neoprene

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41
Q

One of the best fuel that detonates only at high temperature is
A. n-heptane
B. iso-octane
C. gasoline
D. catane

A

B. iso-octane

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42
Q

Which of the following is known as Freon?
A. CCl2F2
B. CH2F2
C. CHCl2F2
D. CF4

A

A. CCl2F2

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43
Q

ClCH2 CHCl2 is named as
A. 1,1,2 trichloro ethane
B. 1,1,2,2 tetrachloro ethane
C. 1,1,1,2 tetrachloro ethane
D. none is correct

A

A. 1,1,2 trichloro ethane

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44
Q

In the SN2 reaction mechanism, which one of the following is the most reactive?
A. C6H6
B. CH3X
C. CH3OH
D. RCH2OH

A

B. CH3X

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45
Q

Calcium carbide on interaction with water gives
A. acetylene
B. propylene
C. ethene
D. ethyne

A

A. acetylene

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46
Q

Methane reacts with N2 in the presence of electric arc giving
A. methyl nitride
B. nitro methane
C. hydrocyanic acid
D. none is correct

A

C. hydrocyanic acid

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47
Q

What happens when methane is passed through electric arc or subjected to high temperature obtained by partial combustion
A. acetylene and ethane are formed
B. carbon and hydrogen are formed
C. CH2 and H2 is formed
D. acetylene is formed

A

D. acetylene is formed

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48
Q

When methane is heated in the absence of air or O2 it break up to give carbon and hydrogen. The process is named as
A. cracking
B. polymerization
C. pyrolysis
D. decomposition

A

C. pyrolysis

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49
Q

Methane on oxidation with ozone give
A. CO2 + H2
B. formaldehyde
C. methyl alcohol
D. methanal

A

D. methanal

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50
Q

Ethylene on interaction with alk. KMnO4 (Baeyers reagent) gives
A. oxalic acid
B. ethyl alcohol
C. HCHO
D. glycol

A

D. glycol

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51
Q

Dehydration of ethylene gives a product which on hydrolysis yields
A. CH3OH
B. C2H5OH
C. C3H7OH
D. ester

A

B. C2H5OH

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52
Q

Kerosene oil is used as an
A. alkanes
B. alcohols
C. aromatic acids
D. aliphatic acids

A

A. alkanes

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53
Q

The chemical process which occurs when water is added to cement is
A. oxidation
B. Brownian movement
C. plastic flow
D. hydration

A

D. hydration

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54
Q

Which of the following organic chemicals is most soluble to water?
A. CH3CH3
B. CH3OH
C. CCl4
D. CH4

A

B. CH3OH

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55
Q

What structures to bothe aldehydes and ketones contains?
A. the carbonyl group
B. the carboxyl group
C. the hydroxyl group
D. the amino group

A

A. the carbonyl group

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56
Q

Two major types of chemical bonds are observed in chemical bonding: ionic and covalent. Which of the following has a bond that is the least ionic in
character?
A. NaCl
B. CH4
C. H2
D. H2O

A

C. H2

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57
Q

Which of the following would not burn?
A. CH4
B. CH3OH
C. CCl4
D. CH3CH2OCH2CH3

A

C. CCl4

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58
Q

Which of the following is chlorofluorocarbon?
A. CHCl3
B. CFCl3
C. C3F8
D. CFCl3

A

B. CFCl3

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59
Q

Which of the following is chloroform?
A. CH3Cl
B. CH2Cl2
C. CHCl3
D. CFCl3

A

C. CHCl3

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60
Q

The compound CH3CH2Cl is named.
A. carbon dichloride
B. methyl chloride
C. methylene chloride
D. ethyl chloride

A

D. ethyl chloride

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61
Q

Which alcohol is the least dangerous to drink?
A. methyl alcohol
B. isopropyl alcohol
C. ethyl alcohol
D. all are equally dangerous

A

C. ethyl alcohol

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62
Q

Grain alcohol in United States is made
A. from coal
B. by fermenting starches and sugar
C. from vinegar
D. by fermenting acetic acid

A

B. by fermenting starches and sugar

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63
Q
A
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63
Q
A
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64
Q
A
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65
Q

A combination of atoms that confers certain chemical physical properties on a compound is called a(n)
A. ether
B. functional group
C. hydrogen bond
D. homolog

A

B. functional group

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66
Q

The correct name for CH3-O-CH3 is
A. dimethyl ether
B. ethyl ether
C. diethyl ether
D. oxyethane

A

A. dimethyl ether

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67
Q

Vodka that is 90 proof contains what percent of alcohol?
A. 9
B. 45
C. 90
D. 180

A

B. 45

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68
Q

Wood alcohol is the same as
A. methanol
B. 2-propanol
C. grain alcohol
D. rubbing

A

Wood alcohol is the same as
A. methanol

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69
Q

Phenol is
A. C6H11-OH
B. CH3CH2CH2OH
C. CH3CH2CH2CH2CH2OH
D. C6H5-OH

A

D. C6H5-OH

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70
Q

The alcohol present in alcoholic beverages is
A. methyl alcohol
B. ethyl alcohol
C. denatured alcohol
D. wood alcohol

A

B. ethyl alcohol

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71
Q

Denatured alcohol refers to
A. any alcohol not produced by fermentation
B. grain alcohol that is highly taxed
C. ethyl alcohol that has been treated with something to make it unfit to drink
D. methanol

A

C. ethyl alcohol that has been treated with something to make it unfit to drink

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72
Q

The toxicity of methyl alcohol results from its oxidation by liver enzymes to
A. carbon dioxide
B. formaldehyde
C. grain alcohol
D. methanol

A

B. formaldehyde

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73
Q

When ingested, ethanol acts as a(n)
A. stimulant
B. depressant
C. antiseptic
D. analgesic

A

B. depressant

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74
Q

Fermentation of carbohydrates leads to the formation of
A. methanol
B. ethanol
C. glucose
D. formaldehyde

A

B. ethanol

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75
Q

The name of the functional group of aldehydes and ketones is the
A. carbonyl group
B. carboxyl group
C. aldehyde group
D. hydroxyl group

A

A. carbonyl group

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76
Q

Which is not a mineral acid?
A. HNO3
B. HCl
C. HCOOH
D. H2SO4

A

C. HCOOH

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77
Q

What acid is found in vinegar?
A. formic acid
B. nitric acid
C. propionic acid
D. acetic acid

A

D. acetic acid

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78
Q

The product of the reaction between an alcohol and a carboxylic acid is known as a(n)
A. acid anhydride
B. ester
C. ether
D. salt

A

B. ester

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79
Q

Alkaloids can best be generally classified with the
A. alcohols
B. acids
C. amines
D. amides

A

C. amines

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80
Q

The small molecule starting materials from which polymers are constructed are called
A. hydrocarbons
B. monomers
C. segmers
D. plasticizers

A

B. monomers

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81
Q

In chemical usage, a plastic is a substance that
A. will return to its original shape after being stretched
B. softens on heating and can be molded under pressure
C. hardens under the influence of heat and pressure
D. is a cheap imitation of natural materials

A

B. softens on heating and can be molded under pressure

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82
Q

Which compound would not serve as a monomer for addition polymerization?
A. CH2=CHCN
B. CH2=CHCl
C. CH2=CHCOOH
D. HOCH2COOH

A

D. HOCH2COOH

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83
Q

Styrofoam picnic coolers are made from
A. CH2=CH2
B. CH2=CHCl
C. CH2=CHCN
D. CH2=CH-C6H5

A

D. CH2=CH-C6H5

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84
Q

The nonstick coating on cookware is made from
A. CH2=CH2
B. CH2=CHCl
C. CH2=CHCN
D. CF2=CF2

A

D. CF2=CF2

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85
Q

Vinyl hardtops for automobiles are made from
A. CH2=CH2
B. CH2=CHCl
C. CH2=CHCN
D. CF2=CF2

A

B. CH2=CHCl

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86
Q

Plastic bags are usually made from
A. CH2=CH2
B. CH2=CHCl
C. CH2=CHCN
D. CH2=CH-C6H5

A

A. CH2=CH2

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87
Q

Natural rubber is
A. polyethylene
B. neoprene
C. polysoprene
D. polyvinyl chloride

A

C. polysoprene

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88
Q

Which if any, are not true of the vulcanization process?
A. it results in sulfur bridges between polymer chains
B. it increases the hardness of natural rubber
C. it improves the elasticity of natural rubber
D. all of the above are true of the vulcanization process

A

D. all of the above are true of the vulcanization process

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89
Q

Which does not apply to the polymer Bakelite?
A. it is a copolymer
B. it is a condensation polymer
C. it is a cross-linked polymer
D. it is an elastomer

A

D. it is an elastomer

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90
Q

Dacron is a
A. polyamide
B. polyester
C. polyolefin
D. acrylic fibers

A

B. polyester

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91
Q

Nylons are
A. polyamide
B. polyester
C. polyolefin
D. acrylic fibers

A

A. polyamide

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92
Q

What is the functional group linking the segments of nylon?
A. amide
B. ester
C. C=C
D. C=O

A

A. amide

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93
Q

Plasticizers are
A. polymers that have elastic properties
B. polymers that soften on heating
C. molecules that confer pliability on otherwise brittle polymers
D. extremely toxic

A

C. molecules that confer pliability on otherwise brittle polymers

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94
Q

Which compounds have not been used as plasticizers?
A. phthalate esters
B. polychlorinated biphenyl
C. vinyl chlorides
D. camphor

A

C. vinyl chlorides

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95
Q

Disposal of synthetic plastics is complicated by
A. the large volume of these materials that accumulate as trash
B. the non-biodegradable nature of most synthetic plastic
C. the toxicity of some gases produced when the materials are burned
D. all of the above are valid

A

D. all of the above are valid

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96
Q

The temperature at which a polymer changes from hard and brittle to rubbery and tough is called its
A. boiling point
B. melting point
C. glass transition temperature
D. thermosetting temperature

A

C. glass transition temperature

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97
Q

Burning polyacrylonitrite (Orlon) generates
A. O2
B. HCl
C. HCN
D. N2O

A

C. HCN

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98
Q

Burning polyvinyl chloride generates
A. O2
B. HCl
C. HCN
D. N2O

A

B. HCl

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99
Q

Carbon forms
A. 2 ionic bonds
B. 2 covalent bonds
C. 4 ionic bonds
D. 4 covalent bonds

A

D. 4 covalent bonds

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100
Q

The methyl group is the simplest
A. alkyl group
B. alkane
C. alkene
D. alkyne

A

A. alkyl group

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101
Q

The correct structural formula for 2-pentyne is
A. CHΞC-CH2-CH2-CH3
B. CH3-CΞC-CH2-CH3
C. CH3-CHΞCH-CH2-CH3
D. CH3-CH2-CH2-CH2-CH3

A

C. CH3-CHΞCH-CH2-CH3

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102
Q

When an alkane burns completely in air, it forms
A. carbon monoxide and water
B. carbon dioxide and water
C. carbon and pentane
D. carbon dioxide and carbon monoxid

A

B. carbon dioxide and water

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103
Q

A cycloalkane consist of
A. a straight chain of carbon atoms with two or three hydrogen atom attached to each carbon
B. a ring of carbon atoms with two hydrogen atoms connected to every carbon atom
C. a ring of carbon atoms with three hydrogen atoms connected to every carbon atom
D. a ring of alkane molecules joined together

A

B. a ring of carbon atoms with two hydrogen atoms connected to every carbon atom

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104
Q

Each bond in a benzene molecule is considered
A. more than double bond, less than a triple bond
B. a double bond
C. a single bond
D. more than a single bond, less than a double bond

A

D. more than a single bond, less than a double bond

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105
Q

Benzene undergoes substitution reactions rather than addition reactions because its ring structure is
A. extremely unstable
B. saturated
C. very stable
D. unsaturated

A

C. very stable

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106
Q

Chlorobenzene forms when a halogen reacts in an
A. alkyl halide
B. alkyne
C. alkane
D. aromatic hydrocarbon

A

D. aromatic hydrocarbon

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107
Q

All functional groups must combine with
A. only one hydrocarbon group
B. more than three hydrocarbon group
C. one or more hydrocarbon group D. two or more hydrocarbon group

A

C. one or more hydrocarbon group

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108
Q

CH3CH2CH2OH is the formula for
A. propyl alcohol
B. amyl alcohol
C. butyl alcohol
D. methyl alcoho

A

A. propyl alcohol

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109
Q

A patient would be most likely to be given a sponge bath with
A. ethyl alcohol
B. methyl alcohol
C. isopropyl alcohol
D. menthol

A

A. ethyl alcohol

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110
Q

The common name for CH3-O-CH3 is
A. diethyl ether
B. methyl ether
C. ether
D. divinyl ether

A

B. methyl ether

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111
Q

An aldehyde used as preservative and a germicide is
A. paraldehyde
B. benzaldehyde
C. acetaldehyde
D. formaldehyde

A

D. formaldehyde

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112
Q

The formation of disulfides through oxidation of two thiols is important for
A. producing disagreeable odors
B. maintaining the structure of protein
C. producing red dyes
D. testing kidney function

A

B. maintaining the structure of protein

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113
Q

An amine consist of
A. a hydrocarbon in which halogens take the place of hydrogen atoms
B. a hydrocarbon which contains sulfur instead of oxygen
C. a carboxyl acid group combined with a halogen
D. an ammonia molecule in which one to three hydrogen are replaced by hydrocarbon groups

A

D. an ammonia molecule in which one to three hydrogen are replaced by hydrocarbon groups

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114
Q

In a quaternary ammonium salt, nitrogen is surrounded by four
A. oxygen atoms
B. sulfur atoms
C. chlorine atoms
D. carbon atoms

A

D. carbon atoms

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115
Q

Which of the following is not an alkaloid?
A. procaine
B. codeine
C. cocaine
D. morphine

A

A. procaine

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116
Q

Which of the following is true?
A. polymers are plastics
B. plastics are polymers
C. a plastic is never a polymer
D. a polymer is never a plastic

A

B. plastics are polymers

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117
Q

Which of the following is not an addition polymer?
A. Orlon
B. Nylon
C. polyethylene
D. Teflon

A

B. Nylon

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118
Q

Polyesters and polyamides are common
A. alkaloids
B. ammonium salts
C. condensation polymers
D. purines

A

C. condensation polymers

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119
Q

An organic compound is a compound that
A. contains carbon and was formed only by living organism
B. is a natural compound that has not been synthesized
C. contains carbon, whether it was formed by living thing or not
D. was formed by a plan

A

C. contains carbon, whether it was formed by living thing or not

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120
Q

There are millions of organic compounds but only thousands of inorganic compounds because
A. organic compounds were formed by living things
B. there is more carbon on the Earth’s surface than any other element
C. atoms of elements other than carbon never combine with themselves
D. carbon atoms can combine with up to four other atoms including other carbon atoms

A

D. carbon atoms can combine with up to four other atoms including other carbon atoms

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121
Q

You know for sure that the compound named decane has
A. more than 10 isomers
B. 10 carbon atoms in each molecule
C. only single bonds
D. all of the above

A

D. all of the above

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122
Q

An alkane with 4 carbon atoms would have how many hydrogen atoms in each molecule?
A. 4
B. 8
C. 10
D. 16

A

C. 10

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123
Q

Isomers are compounds with the same
A. molecular formula with different structures
B. molecular formula with different atomic masses
C. atoms, but different molecular formulas
D. structures, but different formulas

A

A. molecular formula with different structures

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124
Q

Isomers have
A. the same chemical and physical properties
B. the same chemical but different physical properties
C. the same physical, but different chemical properties
D. the same physical, and chemical properties

A

D. the same physical, and chemical properties

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125
Q

The organic compound 2,2,4-trimethylpentane is an isomer of
A. propane
B. pentane
C. heptane
D. octane

A

B. pentane

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126
Q

The hydrocarbons with a double covalent carbon-carbon bond are called
A. alkanes
B. alkenes
C. alkynes
D. none of the above

A

A. alkanes

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127
Q

According to their definitions, which of the following would not occur as unsaturated hydrocarbon?
A. alkanes
B. alkenes
C. alkynes
D. none of the above is correc

A

C. alkynes

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128
Q

Petroleum is believed to have formed mostly from the anaerobic decomposition of buried
A. dinosaurs
B. fish
C. pine trees
D. plankton and algae

A

C. pine trees

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129
Q

Hydrogen bonding may form by the attraction between
A. one hydrogen atom to another in water molecule
B. hydrogen and oxygen within a water molecule
C. the oxygen part of one water molecule to the hydrogen part of another water molecule
D. the hydrogen part of one water molecule to the hydrogen part of another water molecule

A

C. the oxygen part of one water molecule to the hydrogen part of another water molecule

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130
Q

Because an alkene has a double bond it is considered
A. hydrated
B. unsaturated
C. saturated
D. dehydrated

A

B. unsaturated

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131
Q

A polynuclear aromatic hydrocarbon is made by fusing together at least
A. two benzene rings
B. two cycloalkanes
C. three alkyl groups
D. two alkynes

A

A. two benzene rings

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132
Q

When an alcohol is dehydrated it forms
A. an aldehyde
B. an acid
C. an alkene
D. a ketone

A

C. an alkene

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133
Q

When an ether oxidizes, it forms
A. an aldehyde
B. an acid
C. an alkene
D. an alcohol

A

B. an acid

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134
Q

If an aldehyde is placed in Benedict’s solution, it reacts to form
A. cuprous oxide and an acid
B. cuprous oxide and a base
C. copper and carbon dioxide
D. copper and an acid

A

A. cuprous oxide and an acid

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135
Q

A carboxylate group consist of
A. an oxygen atom double bonded to a hydrogen atom
B. a carbon atom double bonded to a hydroxyl group
C. the carboxyl group minus the hydrogen group
D. a hydrogen atom double bonded to a carbon atom

A

C. the carboxyl group minus the hydrogen group

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136
Q

When an ester is hydrolyzed, the end products are
A. water and a base
B. an acid and water
C. an acid and an alcohol
D. an acid and a base

A

C. an acid and an alcohol

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137
Q

______ is an example of an alkyl halide.
A. NaCl
B. CHCl3
C. CF2=CF2
D. KCl

A

B. CHCl3

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138
Q

If “thio” appears on the name of a compound, you know that the compound contains a functional group based on
A. oxygen
B. hydrogen
C. a halogen
D. sulfur

A

D. sulfur

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139
Q

Amyl nitrite contains the following functional group
A. –NO2
B. –ONO
C. –ONC2
D. –CΞN

A

B. –ONO

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140
Q

The largest carbohydrates are called
A. polysaccharides
B. oligosaccharides
C. monosaccharides
D. disaccharides

A

A. polysaccharides

141
Q

A 3-carbon monosaccharide is a
A. triose
B. tetrose
C. hexose
D. pentose

A

B. tetrose

142
Q

Most glucose molecules in solution exist in
A. the open form
B. the closed beta form
C. the closed alpha form
D. equal amounts of the three forms

A

D. equal amounts of the three forms

143
Q

Which of the following pairs are epimers?
A. glucose and fructose
B. glucose and sucrose
C. galactose and fructose
D. galactose and glucose

A

D. galactose and glucose

144
Q

Invert sugar consist of fructose and
A. maltose
B. lactose
C. sucrose
D. glucose

A

D. glucose

145
Q

The most abundant organic substance found in nature is
A. starch
B. glycogen
C. cellulose
D. dextran

A

C. cellulose

146
Q

Sugars in which the aldehyde group can be oxidized to a carboxylic acid group are called
A. glycosides
B. glucosides
C. reducing sugars
D. phosphate esters

A

C. reducing sugars

147
Q

Natural monosaccharides have
A. the L configuration
B. the D configuration
C. an equal mixture of the D and L configurations
D. more of the L than D configuration

A

B. the D configuration

148
Q

In most fatty acids, the carbons are arranged in a
A. ring
B. straight chain, with a carboxylic acid group in the middle
C. branched chains, with a carboxylic group at the center
D. straight chain, with a carboxylic acid group at one end

A

D. straight chain, with a carboxylic acid group at one end

149
Q

A soap molecule
A. is nonpolar
B. is polar
C. has a nonpolar end and a polar end
D. becomes nonpolar in solution

A

C. has a nonpolar end and a polar end

150
Q

The wax used to make dental impressions is
A. beeswax
B. cerumen
C. lanolin
D. camauba wax

A

A. beeswax

151
Q

Which characteristics is not true for oils?
A. mostly vegetable origin
B. liquid at room temperature
C. saturated
D. high iodine number

A

C. saturated

152
Q

Saponification is a reaction in which a tricylglycerol reacts with a strong base to form
A. glycerol and three soap molecules
B. glycerol and three water molecules
C. three fatty acid molecules and water
D. oleic aicd and water

A

A. glycerol and three soap molecules

153
Q

Which fuciton does fat not perform?
A. reserve supply of energy
B. insulation against the cold
C. maintenance of stable pH in blood
D. protection of organs

A

C. maintenance of stable pH in blood

154
Q

Phospolipids differ from triacyglycerols in that one of the hydroxyl groups of glycerol is esterified with
A. phosphorous
B. phosphoric acid
C. phosphoglyceride
D. phosphatidyl choline

A

B. phosphoric acid

155
Q

In active transport
A. no energy is expected
B. molecules are carried from a region of low concentration to one of greater concentration
C. only water molecules pass through the membrane
D. the process takes place as in diffusion

A

B. molecules are carried from a region of low concentration to one of greater concentration

156
Q

All halogens have similar reactivity because
A. they have the same number of protons
B. they have the same number of electrons
C. they have similar outer shell electron configurations
D. they have valence electrons with the same quantum numbers

A

C. they have similar outer shell electron configurations

157
Q

Ethylene readily undergoes the following type of reaction
A. addition
B. elimination
C. substitution
D. rearrangement

A

A. addition

158
Q

Which one of the following methods is used in the preparation of methane?
A. by the electrolysis of aluminum carbide
B. by heating aluminum carbide
C. by heating sodium acetate with soda lime
D. by the interaction of sodium acetate with water

A

C. by heating sodium acetate with soda lime

159
Q

Dehydration of Ethylene gives a product of which on hydrolysis yields
A. CH3OH
B. C2H5OH
C. C3H7OH
D. ester

A

B. C2H5OH

160
Q

Which of the following structures represents that of vinyl chloride?
A. C2H3Cl
B. C2H2Cl
C. C2H2ClF
D. C2Cl4

A

B. C2H2Cl

161
Q

Which of the following is a crystalline polymer which is used primarily as a film?
A. PVC
B. PVF
C. PTFE
D. TFE

A

C. PTFE

162
Q

Polymers which are capable of forming an ordered melt
A. mesogenic
B. hematic
C. thermotropic
D. lyotropic

A

C. thermotropic

163
Q

A compound produced by the reaction of cellulose and nitric acid
A. Kevlar
B. A-glass
C. celluloid
D. cellulose nitrate

A

D. cellulose nitrate

164
Q

It refers to the number of reactive groups in a molecule
A. degree of polymerization
B. functionality
C. molecularity
D. reactivity

A

B. functionality

165
Q

Aldehydes maybe prepared by oxidizing
A. primary alcohols
B. secondary alcohols
C. tertiary alcohols
D. ketones

A

A. primary alcohols

166
Q

What type of isomerism is exhibited by the pairs CH3COCH3 and CH3CH2CHO?
A. skeletal isomers
B. position isomers
C. functional group isomers
D. tautomers

A

C. functional group isomers

167
Q

The monomer unit in for Teflon is
A. styrene
B. ethane
C. tetraflouroethylene
D. propene

A

C. tetraflouroethylene

168
Q

In general isomer should have the same
A. boiling point
B. number of carbon atoms
C. molecular mass
D. density

A

C. molecular mass

169
Q

Fats and oil are more formed when fatty acids react with
A. ammonia
B. phenol
C. glycerol
D. acetic acid

A

C. glycerol

170
Q

It is linear polymer which maybe reversibly softened by heat and solidified by cooling
A. thermosets
B. thermoplastic
C. polymer
D. copolymer

A

B. thermoplastic

171
Q

The inventor of PF plastic (bakelite)
A. Patrick
B. Carothers
C. Baekeland
D. Kienle

A

C. Baekeland

172
Q

The general formula of PVC
A. (CH2CH2)n
B. (Cl2CCFCl)n
C. (CH2CHCl)n
D. (CF2CF2CF)

A

C. (CH2CHCl)n

173
Q

A hard amorphous transparent, brittle material produced by the fusion of silicates with basic compounds, such as carbonate and/or limestone
A. cement
B. clay
C. glass
D. granite

A

C. glass

174
Q

An instrument for determining the effect of polarized light as it passes through the material being
A. spectrophotometer
B. polariscope
C. gyroscope
D. telescope

A

B. polariscope

175
Q

The temperature at which a glassy polymer becomes flexible as the temperature is increased.
A. melting point
B. glass transition
C. fusion point
D. annealing point

A

B. glass transition

176
Q

The property of thermoplastic composite is ____ to the diameter of the fiber
A. independent of
B. dependent of
C. directly proportional
D. inversely proportional

A

D. inversely proportional

177
Q

Secondary alcohol when undergoes oxidation forms
A. aldehydes
B. acid
C. ketone
D. ester

A

C. ketone

178
Q

A positive result in Schiff’s test means presence of
A. ketones
B. aldehydes
C. amine
D. ether

A

B. aldehydes

179
Q

Compounds with general formula (C5H8)n
A. alkanes
B. terpenes
C. elastomers
D. enantiomers

A

B. terpenes

180
Q

An acid chloride forms an ester by which of the following reactions?
A. reduction
B. oxidation
C. hydrolysis
D. alcoholysis

A

D. alcoholysis

181
Q

Which of the following is not a derivative of carboxylic acid?
A. amine
B. ester
C. aldehyde
D. alcohol

A

A. amine

182
Q

Which of the following is not a derivative of benzene?
A. naphthalene
B. anthracene
C. phenanthrene
D. bromomethane

A

D. bromomethane

183
Q

One ingredient present in all baking poweders
A. sodium citrate
B. sodium metabisulfate
C. sodium bicarbonate
D. potassium tartrate

A

C. sodium bicarbonate

184
Q

A copolymer of isobutylene with a small amount (5% ) of isoprene
A. butyl rubber
B. Buna
C. chloroprene
D. elastomer

A

A. butyl rubber

185
Q

Finely divided amorphous carbon particles produced by the incomplete combustion of a hydrocarbon.
A. diamond
B. fullerenes
C. carbon black
D. emulsion

A

C. carbon black

186
Q

In most fatty acids, the carbons are arranged in a
A. ring
B. straight chain, with a carboxylic acid group in the middle
C. branched chains, with a carboxylic group at the center
D. straight chain, with a carboxylic acid group at one end

A

D. straight chain, with a carboxylic acid group at one end

187
Q

A soap molecule
A. is nonpolar
B. is polar
C. has a nonpolar end and a polar end
D. becomes nonpolar in solution

A

C. has a nonpolar end and a polar end

188
Q

It is a hydrocarbon chain which is composed of two or more different mer units
A. monopolymers
B. polymers
C. copolymers
D. oligomers

A

B. polymers

189
Q

A polymer molecular structure in which ther mer units are joined together end to end in single chains
A. linear
B. branched
C. crosslinked
D. network

A

A. linear

190
Q

It denotes a situation in which the mer units are linked together in the same order (head-to-tail) but differ in their spatial arrangement
A. allotropy
B. isomerism
C. polymorphism
D. stereoisomerism

A

D. stereoisomerism

191
Q

A copolymer whose mer units are randomly dispersed along the chain
A. random copolymer
B. alternating copolymer
C. block copolymer
D. graft copolymer

A

A. random copolymer

192
Q

Which of the following does not belong to the group?
A. rubber
B. cotton
C. cement
D. leather

A

C. cement

193
Q

Which of the following is not a forming operation?
A. forging
B. drawing
C. rolling
D. welding

A

D. welding

194
Q

The hydrate named as sodium carbonate decahydrate is commonly called
A. baking soda
B. washing soda
C. soda lime
D. caustic soda

A

B. washing soda

195
Q

Name the compound HCO2H
A. methyl formate
B. acetone
C. dimethyl ether
D. formic acid

A

D. formic acid

196
Q

An example of water soluble is
A. vitamin C
B. vitamin A
C. vitamin E
D. vitamin K

A

A. vitamin C

197
Q

All halogens have similar reactivity because
A. they have the same number of protons
B. they have the same number of electrons
C. they have similar outer shell electron configurations
D. they have valence electrons with the same quantum numbers

A

C. they have similar outer shell electron configurations

198
Q

sp2 hybridization will be found for carbon in
A. CH4
B. C2H4
C. C2H2
D. CH3OH

A

B. C2H4

199
Q

Which of the following is responsible for the abnormally high boiling point of water?
A. covalent bonding
B. ionic bonding
C. high polarity
D. large dielectric

A

B. ionic bonding

200
Q

______ involves electron transfer from one atom to another
A. covalent bonding
B. ionic bonding
C. hydrogen bonding
D. metallic bonding

A

B. ionic bonding

201
Q

Which of the following is most soluble in water?
A. hexanol
B. benzene
C. acetic acid
D. acetylene

A

C. acetic acid

202
Q

Which of the following has a dipole moment of zero?
A. CH4
B. CH3Cl
C. H2O
D. HF

A

A. CH4

203
Q

Which of the following is least polar?
A. H-I
B. P-Br
C. C-Cl
D. C-I

A

D. C-I

204
Q

The alkane containing a total of 20 hydrogen atoms must be an isomer of
A. cyclononane
B. decane
C. eicosane
D. nonane

A

D. nonane

205
Q

The molecular formula for 2-methyl hexane is
A. C6H12
B. C6H14
C. C7H14
D. C7H16

A

D. C7H16

206
Q

Which of the following is an isomer of pentane are there?
A. 3-ethylpentane
B. 2-methyloctance
C. 2-methylpentane
D. methylcyclohexane

A

A. 3-ethylpentane

207
Q

How many different isomers of pentane are there?
A. only one
B. three
C. four
D. five

A

D. five

208
Q

Which has the most number of carbon atoms; tricholormethane, dichloromethane, chloromethane?
A. trichloromethane
B. dichloromethane
C. chloromethane
D. all the same

A

B. dichloromethane

209
Q

How many carbon atoms are there in 2-bromo-2-pentene?
A. 6
B. 5
C. 4
D. 3

A

D. 3

210
Q

How many halogens are there in period 3?
A. 4
B. 3
C. 2
D. 1

A

B. 3

211
Q

Reactions which occur in a single step
A. series reaction
B. homogenous reaction
C. parallel reaction
D. elementary reaction

A

D. elementary reaction

212
Q

Which of the following is not an alphatic hydrocarbon?
A. n-octane
B. n-tridecane
C. propylene
D. toluene

A

D. toluene

213
Q

No carbonyl group is found in:
A. ether
B. aldehyde
C. ketone
D. carboxylic acid

A

A. ether

214
Q

A compound which has a bond formed by the overlap of sp-sp3 hybrid orbital is:
A. HC=CH
B. CH3-CΞCH
C. CH3-CH=CH2
D. H2C=C=CH2

A

B. CH3-CΞCH

215
Q

The Lucas test is used to determine the types of:
A. alcohols
B. dehydrations
C. acids
D. amino acids

A

A. alcohols

216
Q

A reaction in which the elements of water are eliminated from a molecule
A. hydrolysis
B. dehydration
C. dehydrogenation
D. hydrogenation

A

B. dehydration

217
Q

It is an addition reaction initiated by an electron-deficient species
A. electrophilic
B. nucleophilic
C. carbionic
D. reversible

A

A. electrophilic

218
Q

Which of the following is a saturated hydrocarbon
A. alkane
B. alkene
C. alkyne
D. alkadiene

A

A. alkane

219
Q

Which of the following has the highest boiling point?
A. hexane
B. octane
C. decane
D. eicosane

A

D. eicosane

220
Q

In the fractional distillation of crude petroleum, gasoline is the fraction whose number of carbon in a molecule ranges from ____
A. C1-C4
B. C5-C10
C. C11-C18
D. C15-C18

A

B. C5-C10

221
Q

What fraction of crude petroleum has 20 or more carbon atoms in a molecule?
A. kerosene
B. gas-oil
C. wax
D. residue

A

C. wax

222
Q

A reaction in which atoms or groups are removed from adjacent atoms to form a double or triple bond
A. substitution
B. elimination
C. addition
D. polymerization

A

B. elimination

223
Q

It is a specie that has a nonbonding pair of outer-shell electrons that it can share in a chemical reaction
A. Lewis base
B. Lewis acid
C. Arrhenius acid
D. Arrhenius base

A

A. Lewis base

224
Q

It is a reaction in which the element of hydrogen are introduced into a molecule
A. halogenation
B. polymerization
C. hydrogenation
D. alkylation

A

C. hydrogenation

225
Q

A process in which rubber is treated with sulfur to improve its properties
A. vulcanization
B. polymerization
C. condensation
D. cross-linking

A

A. vulcanization

226
Q

Which if the following aromatic compounds is the oil of wintergreen?
A. methyl salicylate
B. cinnamaldehyde
C. eugenol
D. vanilla

A

A. methyl salicylate

227
Q

Which if the following aromatic hydrocarbon is consist of two benzene rings?
A. toluene
B. naphthalene
C. anthracene
D. phenanthrene

A

B. naphthalene

228
Q

Which of the following is meta directing radical?
A. alkyl
B. halogen
C. amino
D. cyano

A

D. cyano

229
Q

Which of the following is an ortho-para directing radical?
A. aldehyde
B. ketone
C. amino
D. hydroxyl

A

D. hydroxyl

230
Q

Isomers with the same bonding attachments of atoms but different spatial orientations
A. stereosimers
B. geometric isomers
C. conformational isomers
D. optical isomers

A

A. stereosimers

231
Q

Isomers that differ as a result of the degree of rotation around a carbon-carbon single bond
A. stereosimers
B. geometric isomers
C. conformational isomers
D. optical isomers

A

B. geometric isomers

232
Q

What does the acronym DDT means?
A. dichlorodiphenyl trichloroethane
B. difluorodiphenyltrimethyl ethane
C. difluoromethyl trichloro ethane
D. dichlorodimethyl-trichloroethane

A

B. difluorodiphenyltrimethyl ethane

233
Q

It is the stage in a polymerization at which cross-linking begins
A. gel point
B. melting point
C. annealing point
D. softening point

A

A. gel point

234
Q

Toilen’s test is test for presence of
A. alcohols
B. phenols
C. aldehydes
D. primary amine

A

C. aldehydes

235
Q

Bayer’s test is for
A. unsaturation
B. alcohol
C. aldehyde
D. ketone

A

A. unsaturation

236
Q

Polymers which are capable of forming an ordered solution
A. mesogenic
B. hematic
C. thermotropic
D. lyotropic

A

D. lyotropic

237
Q

Polymers which are capable of forming an ordered melt
A. mesogenic
B. hematic
C. thermotropic
D. lyotropic

A

C. thermotropic

238
Q

Compounds with general formula (C5H8)n
A. alkanes
B. terpenes
C. elastomers
D. enantiomers

A

B. terpenes

239
Q

The term hydrocarbon is used to denote compounds that
A. contain carbon and hydrogen
B. contain nitrogen and carbon
C. contain oxygen and hydrogen
D. contain hydrogen

A

A. contain carbon and hydrogen

240
Q

The most characteristic reaction of alkenes are
A. condensation reactions
B. addition reaction
C. substitution reactions
D. none of these, alkenes are inert

A

B. addition reaction

241
Q

What is the major structural unit of plants?
A. cellulose
B. DNA
C. RNA
D. glycogen

A

A. cellulose

242
Q

Myoglobin is an example of a
A. fibrous protein
B. globular protein
C. DNA
D. starch

A

B. globular protein

243
Q

Which of the following is a disaccharide?
A. fructose
B. lactose
C. cellulose
D. glucose

A

B. lactose

244
Q

How many aromatic isomers of dibromobenzene exist?
A. 2
B. 3
C. 8
D. 6

A

B. 3

245
Q

What is the general formula for an aldehyde?
A. R-CO-OH
B. R-CO-H
C. R-O-R
D. R-OH

A

B. R-CO-H

246
Q

What is the general formula for an alcohol?
A. R-CO-OH
B. R-CO-H
C. R-O-R
D. R-OH

A

D. R-OH

247
Q

Of the following, which are the most reactive?
A. alkanes
B. alkenes
C. cycloalkanes
D. alkynes

A

D. alkynes

248
Q

Which of the following is not an alkane?
A. C3H8
B. C7H16
C. C5H12
D. C9H18

A

D. C9H18

249
Q

What is the IUPAC name for the following compound?
H H
l l
H3C —- C —– C —- C == CH2
l l l
CH3 H CH3
A. 2,5-dimethylpentane
B. 2,4-methylbutene
C. 2,4-dimethyl-1-pentene
D. 2,4-ethylbutene

A

C. 2,4-dimethyl-1-pentene

250
Q

The sequence of amino acids in a protein is the
A. primary structure
B. secondary structure
C. tertiary structure
D. quaternary structure

A

A. primary structure

251
Q

Which of the following are monosaccharides? (I) glucose (II) fructose (II) lactose (IV) sucrose|
A. III and IV
B. I and II
C. I
D. II

A

B. I and II

252
Q

What is the distinguishing characteristic of carbohydrates?
A. carbonyl group
B. two-C-OH groups
C. Cx(H2O)y formula
D. six carbon atoms

A

C. Cx(H2O)y formula

253
Q

What do you call hydrocarbons containing carbon to carbon triple bonds?
A. alkanes
B. alkenes
C. alkynes
D. aromatics

A

C. alkynes

254
Q

What is the term used to describe hydrocarbons containing single bonds between carbon atoms?
A. alkanes
B. alkenes
C. alkynes
D. esters

A

A. alkanes

255
Q

It is a mixture of fructose and glucose by the breakdown of sucrose
A. galactose
B. invert sugar
C. monosaccharides
D. disaccharides

A

B. invert sugar

256
Q

A carboxylic acid which contributes to the strong odor of rancid butter and other fats
A. caproic acid
B. acetic acid
C. lactic acid D. butyric acid

A
257
Q

Isopropyl alcohol is
A. CH3CHCH3
l
OH
B. CH3OH
C. CH3CH2OH
D. CH3CH2CH2OH

A

A. CH3CHCH3
l
OH

258
Q

Which compound is an ether?
A. CH3COCH3
ll
O
B. CH3CH2OH
C. CH3OCH2CH3
D. CH3CCH3
ll
O

A

C. CH3OCH2CH3

259
Q

The formula for diethyl ether is
A. CH3OCH3
B. C2H5OH
C. CH3CH2CCH2CH3
l l
O
D. CH3CH2OCH2CH3

A

D. CH3CH2OCH2CH3

260
Q

A group that aldehydes and ketones have in common is
A. –COOH
B. –CHO
C. –C - -
l l
O
D. –OH

A

C. –C - -
l l
O

261
Q

If the monomer is CH3-CH=CH-Cl, the polymer is
A. [-CH2-CH=CH-]n
l
Cl
B. [-CH2-CH2-CH-]n
l
Cl
C. [-CH=C=CH-]n
l
Cl
D. [-CH-CH-]n
l l
CH3 Cl

A

D. [-CH-CH-]n
l l
CH3 Cl

262
Q

CH3CCH2CH3 represents
ll
O
A. methyl propyl ketone
B. diethyl ketone
C. dimethyl ketone
D. ethyl methyl ketone

A

D. ethyl methyl ketone

263
Q

CH3CH2C-OH is the structural
ll
O
formula of
A. ethanoic acid
B. propanoic acid
C. butanoic acid
D. methanoic acid

A

B. propanoic acid

264
Q

CH3C-OCH2CH2CH3 is the
ll
O
structural formula for
A. methyl propionate
B. ethyl formate
C. ethyl acetate
D. propyl acetate

A

D. propyl acetate

265
Q

HCNH2 represents
ll
O
A. methanamide
B. ethanamide
C. propanamide
D. methylacetamide

A

A. methanamide

266
Q

O
ll
CH3COCH2CH2CH3 is the structural formula for
A. methyl propionate
B. ethyl formate
C. ethyl acetate
D. propyl acetate

A

D. propyl acetate

267
Q

A carboxylic acid which contributes to the strong odor of rancid butter and other fats.
A. caproic acid
B. acetic acid
C. lactic acid
D. butyric acid

A

D. butyric acid

268
Q

An acid found in citrus fruits.
A. capric acid
B. ethanoic acid
C. citric acid
D. oleic acid

A

C. citric acid

269
Q

An acid found in vinegar.
A. citric acid
B. formic acid
C. stearic acid
D. acetic acid

A

D. acetic acid

270
Q

It is reaction in which the element of hydrogen are introduced into a molecule.
A. halogenation
B. hydration
C. hydrogenation
D. Alkylation

A

C. hydrogenation

271
Q

What is the name of the following alkane?
A. 2,3-dimethyl butane
B. 1-isopropyl-1-methyl ethane
C.1,1,2-trmethyl propane
D. 1,3-dimethyl butane

A

A. 2,3-dimethyl butane

272
Q

An alkyne contains at least one of each of the following carbon-carbon bonds?
A. double
B. quadruple
C. triple
D. single

A

C. triple

273
Q

Carbonated water is made by dissolving CO2 in water at a
A. high temperature
B. temperature which is gradually increased
C. pressure lower than 1 atm
D. pressure greater than 1 atm

A

D. pressure greater than 1 atm

274
Q

In benzene, what is the valence bond hybridization on each carbon atom?
A. sp
B. sp2
C. sp3
D. spd

A

B. sp2

275
Q

What kind of hybrid orbitals are formed on the carbon atom in cyclopropane?
A. sp
B. sp2
C. sp3
D. spd

A

C. sp3

276
Q

Three sp2 hybrid orbitals are formed on the carbon atoms in cyclopropane?
A. 109°28”
B. 60°
C. 90°
D. 120°

A

D. 120°

277
Q

How many secondary carbon atoms does methylcylopropane have?
A. none
B. one
C. two
D. three

A

C. two

278
Q

Substances that absorb ultraviolet light and reemit it as visible light are called
A. bleaches
B. fabric softeners
C. optical brightness
D. water softeners

A

C. optical brightness

279
Q

Hair is
A. protein
B. fat
C. carbohydrate
D. cellulose

A

A. protein

280
Q

A continuous-chain hydrocarbon is isomeric with 2-methyl-3ethylhexane?
A. octane
B. nonane
C. decane
D. dodecane

A

B. nonane

281
Q

When an alcohol is dehydrated it forms
A. an aldehyde
B. an acid
C. an alkene
D. a ketone

A

C. an alkene

282
Q

The empirical formula of a compound is CH2 one mole of this compound has a mass of 42 gm. Its molecular formula is
A. CH2
B. C2H2
C. C3H6
D. C3H3

A

C. C3H6

283
Q

How many carbon atoms are there in 2-bromo-2-pentene?
A. 6
B. 5
C. 4
D. 3

A

B. 5

284
Q

Which of the following is a shark liver oil?
A. menthol
B. oil of cedar
C. squalene
D. oil of celery

A

C. squalene

285
Q

The substance chiefly responsible for the bright orange color of carrots
A. vitamin K
B. ascorbic acid
C. β-carotene
D. protein

A

C. β-carotene

286
Q

The hydrocarbon fraction from petroleum whose size range of molecules is from C5 to C12.
A. kerosene, fuel oil
B. gas
C. straight-run gasoline
D. lubricator

A

C. straight-run gasoline

287
Q

Which of the following describes a triple bond?
A. two sigma bonds and two pi bonds
B. two sigma bonds and one pi bond
C. one sigma bond and two pi bonds
D. one sigma bond and two pi bonds

A

D. one sigma bond and two pi bonds

288
Q

Which of the following is closest to the C-O-C bond angle in CH3-O-CH3?
A. 180°
B. 120°
C. 109.5°
D. 90°

A

C. 109.5°

289
Q

Triethylamine [(CH3CH2)3N] is a molecule in which the nitrogen atom is ______ hybridized and the CNC bond angle is ________.
A. sp2; >109.5°
B. sp2;< 109.5°
C. sp3; >109.5°
D. sp3; <109.5°

A

D. sp3; <109.5°

290
Q

How should (CH3)2C(OH)CH2CH3 be classified?
A. primary alcohol
B. tertiary alcohol
C. secondary alcohol
D. quarternary alcohol

A

B. tertiary alcohol

291
Q

The least number of atoms in alkynes is
A. 4
B. 6
C. 5
D. 7

A

A. 4

292
Q

The chemical formula of pyruvic acid is:
A. OHC COOH
B. CH3COOH
C. CH3COCOCH
D. CH3COCOOH

A

D. CH3COCOOH

293
Q

A compound which has a bond formed by the overlap of sp-sp3 hybrid orbital is:
A. HC≡ CH
B. CH3-C ≡CH
C.CH3-CH=CH2
D. H2O=C=CH2

A

B. CH3-C ≡CH

294
Q

Williamson synthesis is a procedure for the production of:
A. Easters from acid chlorides
B. Ethers from alkyl iodide
C. Alkanes using sodium metal
D. Salicylic acid from phenol

A

B. Ethers from alkyl iodide

295
Q

The reaction of an alcohol and an aryl isocyanate.
A. urethane reaction
B. esterification
C. condensation
D. hydrolysis

A

A. urethane reaction

296
Q

An ordered state which is stable at a temperature range between the solid state and an ordered fluid system.
A. suspension
B. colloid
C. liquid crystal
D. composite

A

C. liquid crystal

297
Q

It is the mixture of fructose and glucose by the breakdown of sucrose.
A. galctose
B. invert sugar
C. monosaccharides
D. disaccharides

A

B. invert sugar

298
Q

Found exclusively in milk of mammals
A. lactose
B. fructose
C. glucose
D.maitose

A

A. lactose

299
Q

Which of the following involve redox reaction?
A. evaporation of water
B. production by lightning of ozine from O2
C. reaction of H2SO4 and NaOH
D. burning of gasoline

A

D. burning of gasoline

300
Q

It is the attraction between molecules.
A. absorption
B. diffusion
C. adhesion
D. cohesion

A

D. cohesion

301
Q

The hydrate named as sodium carbonate decahydrate is commonly called
A. baking soda
B. washing soda
C. soda lime
D. caustic soda

A

B. washing soda

302
Q

Which, if any, are not true of the vulcanization process?
A. it results in sulfur bridges between polymer chains
B. it increases the hardness of natural rubber
C. it improves the elasticity of natural rubber
D. All of the above are true of the vulcanization process

A

D. All of the above are true of the vulcanization process

303
Q

Saponification is a reaction is a reaction in which a tricylglycerol reacts with a strong base to form
A. glycerol and three soap molecules
B. glycerol and three water molecules
C. three fatty acid molecules and water
D. oleic acid and water

A

A. glycerol and three soap molecules

304
Q

Steroids are derivatives of which lipid?
A. β-carotene
B. cholesterol
C. sphingosine
D. vitamin D

A

B. cholesterol

305
Q

An organic compound has an empirical formula of C3H6O. This formula can represent
A. three alcohols
B. two alcohols and one ether
C. one organic acid
D. two ethers and one alcohol

A

B. two alcohols and one ether

306
Q

Which compounds are isomers?
A. 1-prpanol and 2-propanol
B. ethane and ethanol
C. methanoic acid and ethanoic acid
D. methanol and methanol

A

A. 1-prpanol and 2-propanol

307
Q

If each of the following is an alkane, which one must be cyclic?
A. C7H14
B. C22H46
C. C3H8
D.C12H26

A

A. C7H14

308
Q

If we add Cl2 to 1-buten, what is the product?
A. CH3CH2CCl2CH3
B. CH3CH2CCl2CHCl2
C. CH3CH2CH2CHCl2
D. CH3CH2CHClCH2Cl

A

D. CH3CH2CHClCH2Cl

309
Q

Which of the following are uses for oxygen
I. oxidizing agent
II. removing impurities from steel
III. bleaching pulp and paper
IV. welding

A. I only
B. II and III
C. III and IV
D. all of these

A

D. all of these

310
Q

Which of the following is not a disubstituted benzene?
A. o-xylene
B. 1,3-diamonibenzene
C. 2,4-dinitrotoluene
D. p-dichlorobenzene

A

C. 2,4-dinitrotoluene

311
Q

Which of the following is an unacceptable IUPAC name?
A. o-chlorotoluene
B. 1,5,6-trinitrobenzene
C. biphenyl
D. 1,3,5-trimethylbenzene

A

B. 1,5,6-trinitrobenzene

312
Q

What reacts with AgNO3 to form a silver mirror?
A. aldehydes
B. acids
C. ketones
D. esters

A

A. aldehydes

313
Q

Isopropyl alcohol is
A. a primary alcohol
B. a tertiary alcohol
C. a secondary alcohol
D. a phenol

A

C. a secondary alcohol

314
Q

Identify the functional group,
A. ether
B. hydroxyl
C. carbonyl
D. carboxyl

A

D. carboxyl

315
Q

Oxygen double bonded with carbon is
A. hydroxyl
B. carbonyl
C. carboxyl
D. alkyl

A

B. carbonyl

316
Q

An alcohol in which the OH is bonded with carbon which is bonded to the other arbon.
A. primary alcohol
B. tertiary alcohol
C. secondary alcohol
D. phenol

A

C. secondary alcohol

317
Q

The least number of atoms in alkynes is
A. 4
B. 6
C.5
D. 7

A

A. 4

318
Q

Ethylene glycol is
A. a triol
B. ester
C. diol
D. phenol

A

C. diol

319
Q

Which is unsaturated?
A. alkenes and alkynes
B. alkanes, alkenes and alkynes
C. alkanes and alkenes
D. alkanes and alkynes

A

A. alkenes and alkynes

320
Q

Which of the following is needed to make a silicon rubber?
A. trihydroxymethyl silane
B. dhydroxymethyl silane
C. hydroxymethyl silane
D. tetramethyl silane

A

A. trihydroxymethyl silane

321
Q

Hybrid orbitals and the triple-bonded carbon of alkynes.
A. sp
B. sp3
C. sp2
D. spd

A

A. sp

322
Q

Which organic compound has the functional group –COOH?
A. ethers
B. ketones
C. aldehydes
D. acids

A

D. acids

323
Q

A benzene ring with one hydrogen removed.
A. benzyl
B. aryl
C. alkyl
D. phenyl

A

D. phenyl

324
Q

Hydrocarbons that contain one or more carbon triple bonds.
A. alkynes
B. alkenes
C. alkyl
D. alkanes

A

A. alkynes

325
Q

How many atoms are there in a molecule of naphthalene?
A. 10
B. 20
C. 18
D. 24

A

C. 18

326
Q

Hybrid orbitals in alkynes.
A. sp3
B. sp
C. sp2
D. spd

A

B. sp

327
Q

What structure to both aldehydes and ketones contains?
A. the carbonyl group
B. the hydroxyl group
C. the carboxyl group
D. the amino group

A

A. the carbonyl group

328
Q

Which one of the following statement regarding organic substances is false?
A. Organic matter is generally stable at high temperature.
B. All organic matter contain carbon.
C. Organic substances generally do not dissolve in water.
D. Organic substances generally dissolve in high concentrated acids.

A

A. Organic matter is generally stable at high temperature.

329
Q

The science dealing with the study of phenomena at very low temperature is known as
A. refrigenics
B. cytogenics
C. frozenics
D. cryogenics

A

D. cryogenics

330
Q

Which of the following contains 18 carbons?
A. palmitic acid
B. stearic acid
C. eleic acid
D. linoleic acid
E. linolenic acid

A. A, B, C, D, E
B. C, D
C. B, C, D, E
D. B, D, E

A

C. B, C, D, E

331
Q

What is the total number of carbon atoms in molecules of glycerol?
A. 1
B. 3
C. 2
D. 4

A

B. 3

332
Q

To be classified as a tertiary alcohol, the functional –OH group is bonded to a carbon atom that must be bonded to a total pf how many additional carbon atoms?
A. 1
B. 3
C. 2
D. 4

A

B. 3

333
Q

Primary alcohol can be derived from the reaction of Grignard reagent with?
A. methanol
B. any ketone
C. acetone
D. ethylene

A
334
Q

Deposits and films are a problem with soap but not detergent because of which property?
A. Soaps form soluble calcium salts
B. Detergents do not form insoluble calcium salts
C. Detergents form more stable micellies
D. Soap micellies are unstable in acid

A

B. Detergents do not form insoluble calcium salts

335
Q

Which statement about steroid is false?
I. The fusion of all rings is cis.
II. Sex hormones, adrenocorticoid hormones, bile acids and vitamin D are derived from cholesterol.
III. The biosynthesis of cholesterol produces several isomers.
IV. Steroids are tetracyclic ring systems.

A. I, III
B. II, IV
C. I, II
D. III, IV

A

A. I, III

336
Q

Which statement about vitamins are true?
I. Vitamin A, D, E and K are fat soluble.
II. Vitamin A, D, E and K are derived from cholesterol.
III. Vitamin A, D, E and K each contain 4 isoprene units.
IV. Vitamin A, D, E and K have distinct physiological activities.

A. II, III
B. III, IV
C. I, III
D. I, IV

A

D. I, IV

337
Q

Carboxylic acids and amides have in general higher boiling points than esters and aldehydes because of which property?
A. dispersion forces
B. resonance stabilization
C. conjugated functional groups
D. hydrogen bonding

A

D. hydrogen bonding

338
Q

Which terms are correct to their definitions?
I. Plastic – a long chain molecule synthesized by linking together many parts.
II. Polymer – can be molded when hot and retains shape when cold.
III. Thermoplastic – can be molded when hot and retains shape when cold.
IV. Thermosetting plastic – can be molded when first prepared, but hardens irreversibly when cooled.

A. III, IV
B. II, III
C. I, II
D. I, IV

A

A. III, IV

339
Q

Which are reducing sugars?
I. lactose
II. sucrose
III. glucose
IV. fructose
V. galactose

A. I, II. III
B. I, III, IV, V
C. II, III, IV, V
D. III, IV, V

A

B. I, III, IV, V

340
Q

Which are dissacharides?
I. sucrose
II. glucose
III. maltose
IV. lactose
V. galactose

A. II, IV, V
B. I, II, III
C. III, IV, V
D. I, III, IV

A

D. I, III, IV

341
Q

Which sugars are monosaccharides?
I. mannose
II. maltose
III. ribose
IV. lactose
V. glucose

A. I, II, III
B. II, III, IV
C. II, IV V
D. I, III, IV

A

D. I, III, IV

342
Q

Cellulose, starch, and glycogen are polusaccharides that contain which sugar?
A. sucrose
B. glucose
C. fructose
D. lactose

A

B. glucose

343
Q

Which sugars are reducing sugars?
I. sucrose
II. maltose
III. lactose
IV. Fructose

A. I, II, III
B. II, III, IV
C. I, III, IV
D. I, II, IV

A

B. II, III, IV

344
Q

What is the term for the process of forming ethane from ethane?
A. combustion
B. thermal cracking
C. fractional distillation
D. catalytic reformation

A

B. thermal cracking

345
Q

Which molecule has the most negative heat of combustion in kcal/mol?
A. methane
B. ethane
C. propane
D. butane

A

D. butane

346
Q

Which is the major product from acid catalyzed hydration of 2-methyl-2-pentane?
A. 2-methyl-3-pentanol
B. 4-methyl-2-pentanol
C. 2-methyl-2-pentanol
D. 3-methyl-3-pentanol

A

C. 2-methyl-2-pentanol

347
Q

Deoxyribonucleic acid (DNA) is an important agent in heredity. Its density is 1.1 g/cc and its molecular weight is 6 E 8 g/mol. Calculate the average volume, in cc, per molecule, assuming no voids.
A. 7.65 E-17
B. 9.06 E-16
C. 8.31 E-17
D. 1.02 E-15

A
348
Q

The saponification number of a triglyceride is 200. The average molecular weight of triglyceride is
A. 200
B. 600
C. 280
D. 840

A

D. 840

349
Q

The acid found in ants is
A. citric acid
B. acetic acid
C. formic acid
D. oxalic acid

A

C. formic acid

Day 1 (10 decks)

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