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Chem Tech > Organic Chemistry > Flashcards

Organic Chemistry Flashcards

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1
Q

An organic compound formed when an acid reacts with an alcohol.

A

ester

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2
Q

Hydrogenation of an alkene yields _________

A

alkane

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2
Q

The simplest ketone is _________

A

acetone

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3
Q

The acid responsible for the irritating sting of ants.

A

formic acid

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3
Q

An aldehyde that smells like green apple is ________

A

ethanal

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4
Q

In which reaction of alkyne can keto-enol tautomerism exist?

A

Ozonolysis

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4
Q

Which of the following physical properties differ for each pair of enantiomers?

A

Direction of rotation of plane-polarized light

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5
Q

Number of double bonds in geraniol

A

2

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6
Q

Whatever the compound, the gram molecular weight contains the same number of molecules, known as Avogadro’s number. It is expressed as:

A

6.02x10^23 particles per mole

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6
Q

All of the following are o- and p- directing substituents EXCEPT

A

-NO2

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6
Q

Which of the following functional groups is present in the melamine molecule?

A

amine

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6
Q

How many isomers does xylene have?

A

3

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6
Q

Which of the following objects are chiral (assume that there is no label or other identifying mark)

a) Pair of scissors
b) Tennis ball
c) Paper clip
d) Beaker
e) The swirl created in water as it drains out of a sink or bathtub

A

chiral, achiral, achiral, achiral, chiral

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7
Q

Fatty acid such as lauric acid and palmitic acid and oleic acid are long unbranched carboxylic acids consisting of 12 to 20 carbon atoms. Which type of fatty acid should people avoid ingesting, saturated or unsaturated and why?

A

Saturated, because the risk of cardiovascular disease is increased

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8
Q

Propanoic acid and methyl acetate are constitutional isomers, and both are liquids at room temperature. One of these compounds has a boiling point of 141°C; the other has a boiling point of 57°C. Which compound has a higher boiling point?

A

(1) propanoic acid

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8
Q

O2 gas effused through a pinhole in 5 sec. How long will it take an equivalent amount of CO2 to effuse under the same conditions?

A

5.9 s

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9
Q

The rate of nucleophilic substitution reaction of tert-butyl bromide with OH– is found to be independent of the concentration of OH– at any instant. It can be inferred that the reaction is:

A

First-order (SN1)

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9
Q

Waxes are

A

Fatty acids alcohol esters

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9
Q

Styrene undergoes ozonolysis to yield two carbonyl compounds. Which of the following pairs is produced by this reaction?

A

Benzaldehyde and formaldehyde

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10
Q

Reduction of ethyl cinnamate using LiAlH4 produces the alcohol

A

3-phenylprop-2-en-1-ol

11
Q

Which of the following compounds is not aromatic?

A

Tetrahydrofuran

11
Q

Palmitate has 16 carbon atoms with
1. 2 d. bonds
2. 1 d. bond
3. 3 d. bonds

A

none of these

11
Q

Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________

A

series

12
Q

Which of the following is a ketone?

A

CH3COCH3

13
Q

Hydrogenation of one mole of allene (CH2=C=CH2) with 2 moles of hydrogen gas in the presence of Lindlar catalyst yields

A

propane

14
Q

All of the following contains carbonyl group EXCEPT

A

ether

15
Q

Friedel-Crafts acylation of benzene with acetyl chloride in AlCl3 yields

A

acetophenone

15
Q

Which of the following is not an aliphatic hydrocarbon?

A

toluene

16
Q

Which of the following contains sp-hybridized carbon?

A

C5H8

17
Q

Vinylbenzene is also known as

A

styrene

17
Q

Oxidation of isopropyl alcohol with KMnO4 yields

A

acetone

18
Q

Which of the following alcohols will undergo bimolecular nucleophilic substitution?

A

all of these: 2-propanol, 1-propanol, 2-methyl-2-propanol

19
Q

In Williamson synthesis of methyl isopropyl ether, the alcohol used is

A

isopropanol

20
Q

Hydrocarbon derivatives used as a main ingredient in automobile antifreeze

A

ethylene glycol

21
Q

The following reagents will give an alkyl halide from an alcohol EXCEPT

A

NaCl

21
Q

Carbonyl compounds can be obtained by reduction using the following except

A

nitrile

22
Q

Hexanedionic acid is also known as

A

adipic acid

22
Q

Hydrogenation of alkenes in the presence of a poisoned Pd catalyst produces

A
22
Q

Reaction of alcohol and a carboxylic acid is known as

A

esterification

23
Q

Which of the following alkanes is gas at room temperature?

A

propane

24
Q

Same chemical formula but different in geometric/structural orientation

A

isomerism

25
Q

Which of the following straight-chain alkanes can be conveniently prepared by Wurtz reaction?

A

icosane

26
Q

In the Grignard synthesis of an alkane using sec-butyl bromide, which of the following alkane will be produced?

A

n-butane

27
Q

In nucleophilic addition reactions of alkenes with HZ in which nucleophile Z attaches to more alkyl-substituted carbon and the H attaches to the carbon that already has the greater number of H atoms, the rule being followed by the reaction is

A

Markovnikov’s rule

28
Q

Addition of hydrazine to carbonyl compounds produces a/an

A

hydrazone

29
Q

Addition of an alcohol to acyl halides produces

A

ester

30
Q

Cyclic esters are known as

A

lactones

31
Q

In each case, tell whether the bond is ionic, polar covalent, or nonpolar covalent: Br2, BrCl, HCl, SrF2, SiH4, CO, N2, CsCl

A

nonpolar covalent, nonpolar covalent, polar covalent, ionic, nonpolar covalent, polar covalent, nonpolar covalent, ionic

Chem Tech (2 decks)

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