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FCERC > PCP > Flashcards

PCP Flashcards

1
Q

Primary alcohol can be derived from the reaction of Grignard reagent with?

A

Methanal

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2
Q

How many forms does alkanes have?

A

3

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3
Q

Used to measure the tendency of fuel to knock.

A

Octane number

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4
Q

In an aldehyde containing substance, under Tollen’s test, what would be the expected result to confirm its positivity

A

Silver mirror

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5
Q

Hybrid orbitals in alkynes

A

sp

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6
Q

How many atoms does freon have?

A

5

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7
Q

Alum, a coagulant of water, is

A

Aluminum sulfate

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8
Q

A waste treatment process which does not need oxygen.

A

Pyrolysis

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9
Q

The decree on pollution control issued in 1976 is

A

PD 984

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10
Q

Ozone, O3, filters out large amount of the ultravoilet and other dangerous radiations from the sun. It is found in the

A

Stratosphere

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11
Q

Which treatment of waste is appropriate to effect soluble organic removal?

A. Activated sludge
B. Diatomic filtration
C. Ion exchange
D. Electrodialysis

A

Activated sludge

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12
Q

Which of the following is a physical method of water treatment?

A. Sedimentation
B. Precipitation
C. Activated sludge process
D. Chlorination

A

Sedimentation

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13
Q

Trace metal that causes the Minamata disease

A

Hg

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14
Q

Japanese word meaning “ouch ouch” and is caused by exposure to cadmium

A

Itay-itay

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15
Q

An act regulating garbage disposal, also known as the Ecological Solid Waste Management Act of 2000

A

RA 9003

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16
Q

It is used as an antiknock additive to fuel and is a bioaccumulative

A

Tetraethyl lead

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17
Q

A type of microoganism used for monitoring the pathogenic property of water

A

Coliform

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18
Q

It is a term used to describe the over-abundance in the growth of algae in water due to the presence of excess nutrients

A

Eutrophication

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19
Q

This phenomenon is described by the separation of hot and cold regions in a given stream

A

Thermal stratification

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20
Q

The hardness of water is expressed as g/L of?

A

CaCO3

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21
Q

The international Standards on Quality Management and Quality Service is

A

ISO 9000

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22
Q

Which compound gives a foul (rotten egg) odor?

A. Hydrogen sulfide
B. Methane
C. Carbon monoxide
D. Carbon dioxide

A

Hydrogen sulfide

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23
Q

Which of the following is not a characteristic of hazardous waste?

A. Toxicity
B. Solubility
C. Flammability
D. Corrosiveness

A

Solubility

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24
Q

Which of the following are major components of photochemical smog?

A NOx and hydrocarbon
B SOx and hydrocarbon
C ozone and oxygen
D NOx, SOx and hydrocarbon

A

NOx and hydrocarbon

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25
Q

The biological decomposition of organic matter accompanied by the production of foul smelling products in an anaerobic condition is

A

Putrefaction

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26
Q

A comprehensive program of action adopted by governments at the United Nations Conference on Environment (also known as Earth Summit in Rio) is

A

Agenda 21

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27
Q

Ozone is important because it

A

Creates a protective coverage against ultraviolet rays

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28
Q

Ozone is all of the following except

A bleaching agent
B less soluble in water than oxygen
C oxidizing agent
D disinfectant

A

Less solublein water than oxygen

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29
Q

A wastewater contains 10 ppm of choride ions, how many mg/L is it?

A 10
B 30
C 14
D 20

A

10

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30
Q

Which of the ff does not affect the amount of dissolved oxygen in water

A heat
B chlorides
C dissolved minerals
D biooxidizable organics

A

Chlorides

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31
Q

Defined limits of waste discharges, e.g., in terms of volume content of contaminants, temp, and the like.

A methylene blue number
B assimilative capacity
C effluent standards
D none of these

A

Effluent standards

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32
Q

Tertiary treament of wastewater include the ff, except

A adsorption
B ion exchange
C reverse osmosis
D filtration

A

Filtration

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33
Q

Small ponds, less than 1 meter deep, whose oxygen supply primarily comes from photosynthetic activity.

A Facultative ponds
B Anaerobic ponds
C Aerated ponds
D Aerobic ponds

A

Facultative ponds

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34
Q

The ratio of oxygen required for stabilization of sewage is called

A

Relative stability

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35
Q

In an Imhoff Tank

A

the sludge and raw sewage are not mixed

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36
Q

Most of the bacteria in sewage are

A

Saphrophytic

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37
Q

The percent of total solids in most domestic sewage is

A

0.1%

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38
Q

In the design of grit chambers

A temperature is an important factor
B baffles are essential
C the detention period should at least be 30 mins
D the maximum velocity of flow is 1 feet per second

A

D the maximum velocity of flow is 1 feet per second

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39
Q

What is found in hard water?

A

Ca and Mg

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40
Q

The gas sludge digestion tanks is mainly composed of

A

Methane

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41
Q

Also known as the Philippine Clean Air Act

A

RA 8749

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42
Q

It is a key component of photochemical smog. Although it is essential UV screen in the upper atmosphere, it is an undesirable pollutant in the troposphere

A

O3

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43
Q

It refers to waste or scrap glass

A

Cullet

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44
Q

HCl reacts vigorously with this compound to form polyvinyl chloride.

A

Ethyne

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45
Q

Acid and alcohol are obtained by the hydrolysis of

A

Ester

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46
Q

The IUPAC name of compound having the formula (CH3)2CHCH2CH2Br is

A

1-bromo-3-methylbutane

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47
Q

How many atoms are there in a molecule of sucrose?

A

45

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48
Q

Which of the ff is not a derivative of benzene?

A naphthalene
B anthracene
C phenanthrene
D bromomethane

A

Bromomethane

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49
Q

How many atoms are there in a molecule of naphthalene?

A

18

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50
Q

Which of the ff is a derivative of carboxylic acid?

A amine
B ester
C aldehyde
D alcohol

A

Ester

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51
Q

Teflon is made from

A

Polytetrafluoroethylene

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52
Q

A benzene ring with one hydrogen removed

A

Phenyl

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53
Q

The Lucas test is used to determine the types of

A

Alcohols

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54
Q

Which has the most number of carbon atoms: trichloromethane, dichloromethane or chloromethane?

A

All the same

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55
Q

Which of the ff has the highest normal boiling point?

A butene
B ethene
C pentene
D propene

A

Pentene

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56
Q

In which organic compound are sp hybrid present?

A ethane
B ethyne
C butene
D propene

A

Ethyne

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57
Q

Styrene is

A

Vinyl benzene

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58
Q

Dichloromethane is also known as

A

Methylene chloride

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59
Q

Ethylene readily undergoes the following type of reaction

A

Addition

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60
Q

Methychloride is represented by

A

CH3Cl

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61
Q

Bonding between carbon atoms are

A electrovalent and strong
B electrovalent and weak
C covalent and strong
D covalent and weak

A

Covalent and strong

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62
Q

Esterification is the reaction of carboxylic with

A

Alcohol

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63
Q

Name the compound with general formula RCOOR

A

Ester

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64
Q

Which organic compound has the functional group -COOH

A ether
B aldehydes
C ketones
D acids

A

Acids

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65
Q

The decreasing order of acidity of the following hydrocarbons: propane, propene and propyne

A

Propyne>propene>propane

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66
Q

To which of the following group does soap belong?

A. Ester
B. Amines
C. Salts of organic acids
D. Aldehydes

A

Salts of organic acids

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67
Q

Which of the ff types of reactions occur when a reactant has got a double bond?

A. Addition
B. Photolysis
C. Substitution
D. Polymerization

A

Addition

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68
Q

Used to determine the molecular weight of an oil

A

Saponification number

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69
Q

Polymers that favor crystallization are least likely to have which of the ff?

A. An atactic configurations of side group?
B. Small side groups
C. Only one repeating unit
D. Small chain lengths

A

An atactic configurations of side groups

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70
Q

What is the major air pollutant emitted by vehicles?

A

CO

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71
Q

Entropy of vaporization for substances is determined to be constant, the value is _____.

A

21 cal/mol-k

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72
Q

In the kinetic molecular theory of gases, which of the ff statements concerning average speeds is true?

A. Most of the molecules are moving at the average speed
B. Any given molecule moves at the average speed most of the time
C. When the temperature increases, more molecules will move at the new average speed
D. When the temperature increases, fewer molecules will move at the new average speed

A

C. When the temperature increases, more molecules will move at the new average speed

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73
Q

If common salt, NaCl, is dissolved in water, which of the following statements is true about the behaviour of pure water?

A. Boiling point is lowered
B. Melting point increases
C. Freezing point decreases
D. Vapor pressure increases

A

C. Freezing point decreases

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74
Q

The radiation that produces the greatest number of ions as it passes through matter is

A. Omega
B. Alpha
C. Beta
D. Gamma

A

Alpha

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75
Q

What is the law that governs ideal gas-liquid solutions?

A

Raoult’s law

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76
Q

Which of the ff statements about ideal gases is incorrect?

A. The mole fraction is equal to weight fraction
B. The mole fraction is equal to volume fraction
C. The mole fraction is equal to the pressure
fraction
D. None of these

A

A. The mole fraction is equal to weight fraction

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77
Q

Formula of acrylonitrile

A

C3H3N

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78
Q

Carbon number is

A

Number of carbon atom

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79
Q

Obtain from methane or the action of CS2

A

Carbon tetrachloride

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80
Q

How many sigma bonds are there in ethylene?

A

More than 3

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81
Q

Name

            CH3
               |
  CH3-- C -- CH3
               |
            CH3
A

neo-pentane

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82
Q

Which if the ff would you expect to have the highest boiling point?

Formuc acid
Ethanol
Oxalic acid
Acetic acid

A

Acetic acid

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83
Q

Which of the ff is a homogenous mixture?

  1. Water
  2. Water and alcohol
  3. Air
A
  1. Water and alcohol

3. Air

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84
Q

Water is a ______ molecule

A

Triatomic

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85
Q

Transition are found in the

A. d and f block
B. s block
C. p block
D. d-block

A

d and f block

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86
Q

An atomic bond resulting from the formation of a molecular orbital head-on collision of atomic orbitals

A

Sigma bonda

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87
Q

Which does not belong to the group

A. Cu
B. Si
C. B
D. As

A

Cu

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88
Q

The most abundant element in the solar system

A

Hydrogen

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89
Q

(P1V1)/T1=(P2V2)/T2 is

A

Combined Boyle’s and Charle’s law

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90
Q

Which of the ff does not belong to the group?

A. B
B. Mg
C. As
D. Si

A

Mg

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91
Q

H+ is a ______.

A

Proton

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92
Q

The purest form of iron

A

Wrought iron

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93
Q

Who was credited for the discovery of oxygen?

A

J.B. Priestly

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94
Q

The science dealing with the study of phenomena at very low temperarures is known as

A

Cryogenics

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95
Q

Ionic solids are (soft/hard) materials of (low/high) melting point

A

High, high

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96
Q

What bond posses the highest thermal and electrical conductivity

A

Metallic bond

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97
Q

A salt is hammered into pieces is a characteristic of a material pertaining to its

A

Brittleness

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98
Q

Which of the ff is the simplest matter?

A. Gas
B. Solid
C. Liquid
D. Any of the three

A

D. Any of the three

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99
Q

Gasoline does not dissolve in water because it contains

A

Alkanes

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100
Q

The melting point and boiling point of halogens (increase/decrese) with increasing (atomic/mass) number.

A

The melting point and boiling point of halogens increase with increasing mass number.

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101
Q

Bauxite us an oxide mineral of

A

Al

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102
Q

Hydrogen is how many percent on the earth’s crust

A

1% by weight

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103
Q

When the temperature of a solid is raised, it expands in all directions. Certain crystals are found to have different expansivities along different axes. However, many of the common materials have the same properties in all directions. The latter substances are called

A

Isotropic substances

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104
Q

The liquid oxygen boils at

A

-183 degree Celsius

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105
Q

What is false about hydrogen

A. Dissolves readily in water
B. Colorleas gas
C. High diffusivity
D. Odorless gas

A

Dissolves readily in water

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106
Q

Ozone is readily dissolved in

A. Water
B. Kerosine oil
C. Turpentine oil
D. Xanthate oil

A

Turpentene oil

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107
Q

Which of the ff has compounds which are more often colored?

A. Alkali metals
B. Alkaline earth metals
C. Halogens
D. Transition metals

A

Transition metals

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108
Q

The following exhibit polar covalent bonds, except

A. Na2O
B. H2O
C. HF
D. NO2

A

Na2O

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109
Q

Among the intermolecular forces if attraction, which one is present in CCl4?

A. LDF
B. H-bonding
C. Dipole-dipole forces
D. Network covalent

A

LDF

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110
Q

Which of the df is not true about hydrides?

A. Very basic
B. Reacts readily with compounds having even weakly acidic protons to form H2
C. Used as covenient source of H2
D. All are correct

A

All are correct

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111
Q

Which of the ff when present in water can lead to brown staining in sanitary ware?

A

Fe and Mg

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112
Q

In which of the ff is the size if particles increasing?

Colloids,solution, suspension

A

Solution, suspension, colloids

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113
Q

Which of the ff is the most polar bond?

A. N-O
B. C-H
C. C-C
D. H-F

A

H-F

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5
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114
Q

The pair of electrons which do not participate in the non-bonding is called

A. Ion pair of non-bonding electrons
B. Covalent bond
C. Ionic bond
D. Bonding electrons

A

Ion pair or non-bonding pair

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115
Q

Which is semiconductor?

A. B
B. Ge
C. Si
D. All of these

A

All of these

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116
Q

A chemical reaction which requires heat to produce products

A

Endothermic reaction

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117
Q

It deffines as the tendency of an atom to attract electrons

A

Electronegativity

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118
Q

Dispersion of solid or liquid particles of microscopic size in a gas media such as smoke is a/an

A. Soot
B. Mist
C. Vapor
D. Aerosol

A

Aerosol

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119
Q

It is a proton donor

A. Arrhenius acid
B. Bronsted acid
C. Lewis acid
D. Acetic acid

A

Bronsted acid

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120
Q

Which of the ff has the highest affinity of electrons

A. Na
B. Cl
C. Br
D. K

A

Cl

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121
Q

Elements in a given period have the same

A. Atomic weight
B. Maximum azimuthal quantum number
C. Maximum principal quantum number
D. Valence electron structure

A

Maximum principal quantum number

122
Q

Electron affinity is defined as

A

The change in energy when a gaseous atom in its grounds state gain an electron

123
Q

Which of the ff is an extensive property?

A. Molar volume
B. Enthalpy
C. Vapor pressure
D. Boiling point

A

Enthalpy

124
Q

A triple bond consist of

A

1 sigma bond and 2 pi bonds

125
Q

Colligative properties depend on

A

Number if solute particles

126
Q

A yellowish gas

A

Chlorine

127
Q

Which of the ff is the lightest?

A. Alpha particle
B. Beta particle
C. Proton
D. Hydrogen

A

Beta particles

128
Q

Group 1R is also known as

A

Alkali metals

129
Q

Ascorbic acid is what vitamin

A

Vitamin C

130
Q

Retinal, retinoland retionoic acid are stable form of

A

Vitamin A

131
Q

Which of the ff is a ketose

A. Fructose
B. Sucrose
D. Glucose
C. Maltose

A

Fructose

132
Q

Heat loving organisms

A

Thermophiles

133
Q

It is derived from papaya and is a natural meat tenderizer

A

Papain

134
Q

Common microoganism used for penicillin manufacture is

A

Mold

135
Q

Synthetic oil of wintergreen contains

A

Methyl salicylate

136
Q

It brings about fermentation of milk

A

Lactobacilli

137
Q

An example of water soluble vitamin

A

Vit. C

138
Q

The fluid occupying the whole portion of a cell

A. Ribosones
B. Cytoplasm
C. Vaccoule
D. Lysosome

A

Cytoplasm

139
Q

Biological compound which are solubles in nonpolar solvent but insoluble in water

A

Lipids

140
Q

When growth of microorganism is inhibitedby the presenceof another, it is known as

A

Parasitism

141
Q

The simplest type of carbohydrate

A

Glucose

142
Q

The product obtained from the hyrdolysis of collagen is

A

Gelatin

143
Q

What is the color of hemoglobin

A

Red

144
Q

Which of the following acts as hydrogen carrier in metabolic reactions

A. ATP
B. NAD
C. DNA
D. CDP

A

NAD

145
Q

Organic matter which constitutes about 40-60% of animals organisms

A

Protein

146
Q

Which of the ff enzymes is used as a meat tenderizer

A

Papain

147
Q

Materials in which microorganism are grown in a laboratory is

A

Culture media

148
Q

Groups of microoganism that grow best in the presence of low oxygen concentration are

A

Microaerophiles

149
Q

Gelatin came from

A

Collagen

150
Q

Which of the following is the other name of vitamin C

A

Ascorbic acid

151
Q

Milk taste sour when kept in the open for some time due to the formation of

A

Lactic acid

152
Q

Steroids which plays an important role in biological reactions is a/an

A

Hormone

153
Q

Who was credited for the discovery of oxygen?

A

J.B. Priestly

154
Q

The science dealing with the study of phenomena at very low temperarures is known as

A

Cryogenics

155
Q

Ionic solids are (soft/hard) materials of (low/high) melting point

A

High, high

156
Q

What bond posses the highest thermal and electrical conductivity

A

Metallic bond

157
Q

A salt is hammered into pieces is a characteristic of a material pertaining to its

A

Brittleness

158
Q

Which of the ff is the simplest matter?

A. Gas
B. Solid
C. Liquid
D. Any of the three

A

D. Any of the three

159
Q

Gasoline does not dissolve in water because it contains

A

Alkanes

160
Q

The melting point and boiling point of halogens (increase/decrese) with increasing (atomic/mass) number.

A

The melting point and boiling point of halogens increase with increasing mass number.

161
Q

Bauxite us an oxide mineral of

A

Al

162
Q

Hydrogen is how many percent on the earth’s crust

A

1% by weight

163
Q

When the temperature of a solid is raised, it expands in all directions. Certain crystals are found to have different expansivities along different axes. However, many of the common materials have the same properties in all directions. The latter substances are called

A

Isotropic substances

164
Q

The liquid oxygen boils at

A

-183 degree Celsius

165
Q

What is false about hydrogen

A. Dissolves readily in water
B. Colorleas gas
C. High diffusivity
D. Odorless gas

A

Dissolves readily in water

166
Q

Ozone is readily dissolved in

A. Water
B. Kerosine oil
C. Turpentine oil
D. Xanthate oil

A

Turpentene oil

167
Q

Which of the ff has compounds which are more often colored?

A. Alkali metals
B. Alkaline earth metals
C. Halogens
D. Transition metals

A

Transition metals

168
Q

The following exhibit polar covalent bonds, except

A. Na2O
B. H2O
C. HF
D. NO2

A

Na2O

169
Q

Among the intermolecular forces if attraction, which one is present in CCl4?

A. LDF
B. H-bonding
C. Dipole-dipole forces
D. Network covalent

A

LDF

170
Q

Which of the df is not true about hydrides?

A. Very basic
B. Reacts readily with compounds having even weakly acidic protons to form H2
C. Used as covenient source of H2
D. All are correct

A

All are correct

171
Q

Which of the ff when present in water can lead to brown staining in sanitary ware?

A

Fe and Mg

172
Q

In which of the ff is the size if particles increasing?

Colloids,solution, suspension

A

Solution, suspension, colloids

173
Q

Which of the ff is the most polar bond?

A. N-O
B. C-H
C. C-C
D. H-F

A

H-F

174
Q

The pair of electrons which do not participate in the non-bonding is called

A. Ion pair of non-bonding electrons
B. Covalent bond
C. Ionic bond
D. Bonding electrons

A

Ion pair or non-bonding pair

175
Q

Which is semiconductor?

A. B
B. Ge
C. Si
D. All of these

A

All of these

176
Q

A chemical reaction which requires heat to produce products

A

Endothermic reaction

177
Q

It deffines as the tendency of an atom to attract electrons

A

Electronegativity

178
Q

Dispersion of solid or liquid particles of microscopic size in a gas media such as smoke is a/an

A. Soot
B. Mist
C. Vapor
D. Aerosol

A

Aerosol

179
Q

It is a proton donor

A. Arrhenius acid
B. Bronsted acid
C. Lewis acid
D. Acetic acid

A

Bronsted acid

180
Q

Which of the ff has the highest affinity of electrons

A. Na
B. Cl
C. Br
D. K

A

Cl

181
Q

Elements in a given period have the same

A. Atomic weight
B. Maximum azimuthal quantum number
C. Maximum principal quantum number
D. Valence electron structure

A

Maximum principal quantum number

182
Q

Electron affinity is defined as

A

The change in energy when a gaseous atom in its grounds state gain an electron

183
Q

Which of the ff is an extensive property?

A. Molar volume
B. Enthalpy
C. Vapor pressure
D. Boiling point

A

Enthalpy

184
Q

A triple bond consist of

A

1 sigma bond and 2 pi bonds

185
Q

Colligative properties depend on

A

Number if solute particles

186
Q

A yellowish gas

A

Chlorine

187
Q

Which of the ff is the lightest?

A. Alpha particle
B. Beta particle
C. Proton
D. Hydrogen

A

Beta particles

188
Q

Group 1R is also known as

A

Alkali metals

189
Q

Ascorbic acid is what vitamin

A

Vitamin C

190
Q

Retinal, retinoland retionoic acid are stable form of

A

Vitamin A

191
Q

Which of the ff is a ketose

A. Fructose
B. Sucrose
D. Glucose
C. Maltose

A

Fructose

192
Q

Heat loving organisms

A

Thermophiles

193
Q

It is derived from papaya and is a natural meat tenderizer

A

Papain

194
Q

Common microoganism used for penicillin manufacture is

A

Mold

195
Q

Synthetic oil of wintergreen contains

A

Methyl salicylate

196
Q

It brings about fermentation of milk

A

Lactobacilli

197
Q

An example of water soluble vitamin

A

Vit. C

198
Q

The fluid occupying the whole portion of a cell

A. Ribosones
B. Cytoplasm
C. Vaccoule
D. Lysosome

A

Cytoplasm

199
Q

Biological compound which are solubles in nonpolar solvent but insoluble in water

A

Lipids

200
Q

When growth of microorganism is inhibitedby the presenceof another, it is known as

A

Parasitism

201
Q

The simplest type of carbohydrate

A

Glucose

202
Q

The product obtained from the hyrdolysis of collagen is

A

Gelatin

203
Q

What is the color of hemoglobin

A

Red

204
Q

Which of the following acts as hydrogen carrier in metabolic reactions

A. ATP
B. NAD
C. DNA
D. CDP

A

NAD

205
Q

Organic matter which constitutes about 40-60% of animals organisms

A

Protein

206
Q

Which of the ff enzymes is used as a meat tenderizer

A

Papain

207
Q

Materials in which microorganism are grown in a laboratory is

A

Culture media

208
Q

Groups of microoganism that grow best in the presence of low oxygen concentration are

A

Microaerophiles

209
Q

Gelatin came from

A

Collagen

210
Q

Which of the following is the other name of vitamin C

A

Ascorbic acid

211
Q

Milk taste sour when kept in the open for some time due to the formation of

A

Lactic acid

212
Q

Steroids which plays an important role in biological reactions is a/an

A

Hormone

213
Q

Clausius clapeyron general equation

A

dP/dT = delta S/ delta V

214
Q

Ice is _______ dense than liquid H2O

A

Less

215
Q

At 2.1 Gpa, 100C, water is

A

Solid

216
Q

Super critical CO2 is used in

A

Extraction

217
Q

The only substance that has a liq-liq boundary curve

A

Helium

218
Q

Superfluid liquid with zero viscosity

A

Helium

219
Q

Protein is the main constituent of

A. Lemon
B. Milk
C. Fruits
D. Vegetables

A

Milk

220
Q

Glucose on reduction yields

A

Sorbitol

221
Q

The fermentation of glucose with yeast, results in the formation of

A

Ethyl alcohol

222
Q

Site for protein synthesis

A

Cytoplasm

223
Q

Organisms which can thrive on an entirely inorganic diet using CO or carbonates as a source of carbon are called

A

Autotrophs

224
Q

The destruction of an enzymes catalytic power by changing its molecular structure is

A

Denaturation

225
Q

An enzyme present in soybeans which converts urea quantitatively into ammonium carbonate

A

Urease

226
Q

Which of the ff enzymes gives flavor in cheese?

A. Lactose
B. Invertase
C. Lipase
D. Amylase

A

Lipase

227
Q

Bacteria which converts alcoholic solution to vinegar is

A

Acetobacter

228
Q

Which of the following is a biological catalyst and it is a protein

A. Hormone
B. Vitamins
C. Enzymes
D. Nucleotides

A

Enzymes

229
Q

Greek word for “salt forming”

A

Halogen

230
Q

Who discovered radium?

A

Marie Curie

231
Q

Aqua regia is a mixture of

A

Nitric and hydrochloric acid

232
Q

Mayonnaise and milk are examples of

A. Emulsion
B. Colloid
C. Suspension
D. Mixture

A

Emulsion

233
Q

Colloidal dispersion has ___ phase/s while a suspension has ___ phase/s

A

2 and 2

234
Q

Which of the ff has no definite structure?

A. Crystalline
B. Amphoteric
C. Amorphous
D. Allotroph

A

Amorphous

235
Q

Who discovered positron

A

Anderson

236
Q

How many halogens are there in period three?

A

1

237
Q

It is a substance that yields hydronium ions in a aqueous solution

A

Arrhenius acid

238
Q

Which of the ff metals has the highest specific heat capacity at 100C?

A. Al
B. Cu
C. Bi
D. Fe

A

Al

239
Q

Hydrogen is how many percent on the Earth’s crust?

A

0.9%

***
Oxygen  49.5
Silicon 25.7
Aluminum 7.5
Iron 4.7
Calcium 3.4
Sodium 2.6
Potassium 2.4
Magnesium 1.9
Other <1
240
Q

Pig iron is essentially the same as

A

Wrought iron

241
Q

The first derivative of kinetic energy with respect to time is

A

Power

242
Q

Which of the ff does not belong to the group?

A. Energy
B. Work
C. Force
D. Heat

A

Force

243
Q

Which of the ff has the lowest boiling point?

A. H2O
B. H2S
C. H2Te
D. H2Se

A

H2S

*refer to HB for BP values

244
Q

The change in direction of a light ray due to change in speed is

A. Diffraction
B. Refraction
C. Reflection
D. Rarefraction

A

Refraction

245
Q

The chemical most commonly used to speed sedimentation of sewage is

A

Lime

246
Q

The second is the duration of radiation of what radioactive element?

A. Mg
B. Cs
C. Kr
D. Pt

A

Cs

  • check your periodic (number of stable isotope)
  • Cs has only 1 stable isotope
247
Q

Which dies not belong to the group?

A. Newton
B. Dyne
C. Slug
D. Pound

A

Slug

248
Q

The curie is a measure of the

A

Number of disintegration per second of a radioactive substance

249
Q

SI unit for radioactivity is

A

Becquerel

250
Q

Which of the ff is not true about precipitation?

A. It is dynamic
B. Goes toward equilibrium
C. Not time dependent
D. Rate of precipitation can determine the properties of the product

A

D

251
Q

When CO2 is bubbled through water, what compound forms?

A

H2CO3

252
Q

Another name for specific gravity

A

Relative density

253
Q

How many electrons are there in a helium atom?

A

2

254
Q

Synthetic oil of wintergreen contains

A

Methyl salycilate

255
Q

Which of the following substance is always produces when an active metal reacts with water?

A

H2

256
Q

In a phase diagram for two miscible substances, composition of the liquid phase is equal to that of the solid phase at which of the ff?

A. Eutectic pt
B. Azeotropic pt
C. Freezing pt
D. Triple pt

A

Eutectic point

257
Q

The properties of light cam best be explained by assuming that light is composed of: (I) particles; (II) waves; (III) atonality

A

I and II

258
Q

The transport number of an ion is determined using which method?

A

Hittorf’s method

259
Q

What is kaolinite?

A

Aluminum silicate (HB)

260
Q

Hardness of diamond is due mainly to a large amount of

A. Covalent bond
B. Hydrogen bond
C. Ionic bond
D. Sigma bond

A

Covalent bond

261
Q

Wood alcohol is

A. Methanol
B. Ethanol
C. Grain alcohol
D. 2-propanol

A

Methanol

262
Q

Which of the ff will evaporate easily in a dry cloth?

A. Water
B. Diethyl ether
C. Acetone
D. Oil

A

Diethyl ether

263
Q

200 ppm is equivalent to ___ mg/L

A

200

264
Q

Which of the ff is a ketose?

A. Fructose
B. Sucrose
C. Glucose
D. Maltose

A

Fructose

265
Q

Which isotope is particularly usef for both diagnostic and therapeutic work with thyroid gland?

A. Cobalt-60
B. Iodine-131
C. Technetium-99 m
D. Tritium

A

B

266
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

267
Q

Gasoline is a

A. Single, complex hydrocarbon
B. Mixture of fee simple hydrocarbon
C. Mixture of few complex hydrocarbons
D. Mixture if large number of hydrocarbon

A

D. Mixture if large number of hydrocarbon

268
Q

Which pollutant contributes significantly to the formation of acid rain?

A. SO2
B. NH3
C. CO
D. Hydrocarbons

A

SO2

269
Q

Which of the ff analyses provides a measure if the biodegradable material present in water

A. COD
B. pH
C. BOD
D. Hardness

A

BOD

270
Q

Another instrument besides a Geiger counter that is useful in detecting radiations

A

Dosimeter

271
Q

A radioactive isotope that is now widely used in cancer treatment

A

Cobalt-60

272
Q

When a solid has a crystalline structure, the atoms areanged in repeating structure is called

A. Lattice
B. Unit cell
C. Crystal
D. Domain

A

Unit cell

273
Q

The distinct pattern in space which the atoms of metal arranged themselves when they combine to produce a substance recognizable size?

A

Space lattice

274
Q

Most abundant element in solar system

A

H

275
Q

The property of a porous body which permits a gas or a liquid to flow through it is

A. Diffusion
B. Osmosis
C. Permeability
D. Viscosity

A

Permeability

276
Q

What is the pH of natural rain water?

A

5.6-6.2

277
Q

When carbon dioxide is dissolved in water it will form

A

Carbonic acid

278
Q

Major component of acid rain

A

NOx and SOx

279
Q

One sample of a soln with a pH 10 is tested with phenolphthalein and another is tested with lithmus paper. In this soln the colors are

A

Lithmus - blue

W/ phenolphthalein - pink

280
Q

Produce comercially by Haber process

A

Ammonia

281
Q

Type of radiation will be stopped by a piece of paper?

A

Alpha

282
Q

Atoms of which element have the the highest first ionization energy?

A. Ca
B. K
C. Na
D. Mg

A

Mg

283
Q

The most penetrating radiation is

A

Gammay ray

284
Q

Alkanes are soluble in all except

A. Chloroform
B. Water
C. Ether
D. Benzene

A

Water

285
Q

One would expect the ff alkene to be CH3-CH2-CH=CH-CH3

A. Gas
B. Solid
C. Liquid
D. Blue in color

A

Liquid

286
Q

CH2=CHCOOH name

A

Propenoic acid

287
Q

Which of the ff is the most acidic?

A. ROH
B. HOH
C. NH3
D. RCOOH

A

RCOOH

288
Q

The energy needed to remove the most loosely bonded electron of an atom is the

A

Ionization energy

289
Q

Who stated that the properties of elements are periodic functions of their atomic weight not atomic number?

A

Dmitri Mendeleev

290
Q

Atomic number is equal to

A

Number of protons

291
Q

Two major types of chemical bonds observed in chemical bonding:ionic and covalent. Which of the ff has a bond that is least ionic character

A. NaCl
B. CH4
C. H20
D. H2

A

H2

292
Q

One atomic mass unit is equivalent to ___ of the atomic weight carbon.

A

1/12

293
Q

Calcium carbonate is also known as

A

Chalk

294
Q

Which of the ff has the least strength?

A. Covalent bond
B. Electrovalent bond
C. Ionic bond
D. Van der waals bond

A

VDW

295
Q

Which of the ff is the most electronegative

A. Fluorine
B. Chlorine
C. Bromine
D. Iodine

A

Fluorine

296
Q

An uneven sharing of electrons between two atoms indicate

A

Polarity

297
Q

All of the ff are colligative properties, except

A. Solubility
B. Vapor pressure lowering
C. Freezing point depression
D. Boiling point elevation

A

Solubility

298
Q

The number that expresses the oxidation state of an atom of an element or groups of atoms is called

A

Valence

299
Q

Lewis base is

A

Donates electron pair

300
Q

The composition of the nucleus of deuterium is

A

One proton and one neutron

FCERC (2 decks)

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