Chemistry Practice Tests 5

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Chemistry Practice Test 5

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1 / 100

Category: Chemistry Ch 10 Class 12

SN2 reactions can be best carried out with:

NTS 2019
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Primary alkyl halides

B) Secondary alkyl halides

C) Tertiary alkyl halides

D) Both primary and tertiary alkyl halides

2 / 100

Category: Chemistry Ch 10 Class 11

Which of the following metals does NOT liberate hydrogen in reaction with acids?

NUMS 2019 Reconduct
Chemistry
Electrochemistry
Elimination Tool:

A) Mg

B) Pt

C) Zn

D) Ca

3 / 100

Category: Chemistry

Q.5 The smallest part of the crystal lattice has all the properties of the entire Crystals, this is called

A. unit

B. unit cell

C. unit crystal

D. all of these

4 / 100

Category: Chemistry Ch 15 Class 12

The acid rain water has pH:

UHS 2012
Chemistry
Environmental Chemistry
Elimination Tool:

A) Below 5

B) 7

C) Between 5 and 7

D) Between 7 and 14

5 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is a Marco-nutrient

Boron

Copper

Iron

Nitrogen

6 / 100

Category: Chemistry Ch 1 Class 11

X-ray work in 20th century shows that diameter of the atoms are of the order?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 1nm.

B) 2nm.

C) 3nm.

D) 4nm.

7 / 100

Category: Chemistry Ch 10 Class 12

The only o, p−directing group which is deactivating in nature is:

NTS 2014
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) -NH2

B) -OH

C) -X (halogens)

D) -R (alkyl groups)

8 / 100

Category: Chemistry Ch 5 Class 11

The atomic number Z of an atom represents the:

NTS 2018
Physics
Atomic Structure
Elimination Tool:

A) Number of protons

B) Number of electrons and protons

C) Number of neutrons

D) Sum of protons and neutrons

9 / 100

Category: Chemistry Ch 15 Class 12

Which of these pollutants is produced by burning of coal and causes acid rain.

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) NO

B) CO2

C) SO2

D) CO

10 / 100

Category: Chemistry Ch 10 Class 12

Grignard’s reagent on hydrolysis give

) Lower hydrocarbon

Higher hydrocarbon

Alcohols

Alkyl halides

11 / 100

Category: Chemistry

Q.150 Who attributed the deviation of real gases from ideal behavior?

A. Boyle's law

B. Charles's law

C. Avogadro's law

D. Van der Waals

12 / 100

Category: Chemistry Ch 1 Class 11

The relative abundance of isotopes of elements are measured by?

PMC Practice 11
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Atomic spectroscopy

B) Ionic spectroscopy

C) Mass spectroscopy

D) Mass spectrometry

13 / 100

Category: Chemistry Ch 8 Class 11

1 mole of N2O4 (g) was placed in an empty 1 dm^3 container and allowed to reach equilibrium according to the following equation:

N2O4(g) 2NO2(g)

At equilibrium, x mole Of N2O4 (g) had dissociated. What is the value of the equilibrium constant, Kc, at the temperature of the Experiment?

NTS 2016 SMBBMC
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 2x / ( 1 – x)

B) 4×2 / (1 – x)2

C) 2x / (1 – x )2

D) 4×2 / (1 – x)

14 / 100

Category: Chemistry

Hydrolysis of acyl chloride results in the formation of:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) Acid anhydride

B) Carboxylic acid

C) Amides

D) Esters

15 / 100

Category: Chemistry Ch 14 Class 12

Who introduced the concept of macromolecules?

PMC Practice 7
Chemistry
Macromolecules
Elimination Tool:

A) Runge

B) Maxwell

C) Staudinger

D) None of these

16 / 100

Category: Chemistry Ch 3 Class 12

Which of the following forms a layer of oxide on its exposure to moisture?

Aluminum

Iron

Steel

Copper

17 / 100

Category: Chemistry Ch 8 Class 11

For the equilibrium reaction 2 NO2 N2O4 (g) + 61 kJ, increase of temperature would:

NTS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Favour the formation of N2O4

B) Favour the decomposition N2O4

C) No effect on equilibrium

D) Stop the reaction

18 / 100

Category: Chemistry Ch 8 Class 12

Benzene can be prepared from:

NTS 2011
Chemistry
Hydrocarbons
Elimination Tool:

A) From Petroleum

B) From Coal

C) From Acetylene

D) From Phenol

E) Al of these

19 / 100

Category: Chemistry Ch 4 Class 11

Which one of the following is an example of covalent solid?

NaCI

Diamond

Mercury

All of these

20 / 100

Category: Chemistry Ch 9 Class 11

For colligative properties, the solution should be:

Electrolyte

Saturated

Diluted

Concentrated

21 / 100

Category: Chemistry Ch 8 Class 11

A very small value of ‘Kc’ for a reaction at equilibrium indicates:

NUMS 2018
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Very small amount of reactants

B) Very small amount of products

C) The rate of backward reaction is greater than that of the forward one

D) The rate of forward reaction is greater than that of the backward one

22 / 100

Category: Chemistry

Hydration energy of sodium Ion Is:

321 Kj/mol

406 Kj/mol

1032 kJ/mil

940 Kj/mol

23 / 100

Category: Chemistry Ch 14 Class 12

The smog having high contents of SO2 is called:

NUMS 2019 Reconduct
Chemistry
Macromolecules
Elimination Tool:

A) Oxidising smog

B) Neutral smog

C) Basic smog

D) Reducing smog

24 / 100

Category: Chemistry

Q.98 In SNa reactions, the hybridization of carbon in moving from substart to transition state changes from?

A. Sp2 to sp3

B. sp to sp2

C.Sp to Sp

D. sp2 to sp3

25 / 100

Category: Chemistry Ch 4 Class 12

H3PO3 is

Weak reducing agent

Strong reducing agent

Strong oxidizing agent

Weak oxidizing agent

26 / 100

Category: Chemistry Ch 4 Class 11

If electrons are loosely packed then:

The boiling point of solid Is high

The solid conducts electricity

They add to the solidity

The melting Point of solid is high

27 / 100

Category: Chemistry

Q.178 Which type of bonds are break during cracking?

A. C-C

B.C-H

C. Both C-C and C-H

D. C-O

28 / 100

Category: Chemistry Ch 6 Class 11

GN lewis described which one of the following bonds?

NTS 2015 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionic bond

B) covalent bond

C) coordinate covalent bond

D) all of the above

29 / 100

Category: Chemistry Ch 7 Class 11

A catalyst increases the rate of reaction by:

NTS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) decreasing the activation energy

B) decreasing the concentration of reactants

C) decreasing the temperature

D) increasing the temperature

30 / 100

Category: Chemistry Ch 8 Class 11

For a reversible reaction to reach an equilibrium state the reaction should be carried out in:

Glass vessel

Iron vessel

Open vessel

Closed vessel

31 / 100

Category: Chemistry

NaNO3 on heating gives:

NUMS Mock 3
Chemistry
Periodicity in Elements

A) O2

B) NO2

C) O2 + NO2

D) NaNO2 + O2

32 / 100

Category: Chemistry

Q.75 Metallic character depends on.

A. Electron affinity

B. Ionization energy

C. Electronegativity

D. All of these

33 / 100

Category: Chemistry Ch 10 Class 12

The order of reactivities of the following alkyl halides for an SN2 reaction is:

NUMS 2016
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) RF > RCl > RBr > RI

B) RF > RBR > RCl > RI

C) RCl > RBr > RF > RI

D) RI > RBr > RCl > RF

34 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is a component of TEAR GAS:

Bromine

Fluorine

Chlorine

Argon

35 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is not a macronutrient?

Mn

Mg

N

Ca

36 / 100

Category: Chemistry Ch 11 Class 12

Primary Alcohol is produced by reactions of Grignard’s reagent with _________ followed by hydrolysis in an acidic medium.

PreMedPK MDCAT Mock 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Carbon dioxide

B) Formaldehyde

C) Acetaldehyde

D) Ketone

37 / 100

Category: Chemistry Ch 7 Class 12

IUPAC name of this is (CH3)2 – CH – CH (C2H5) – C(CH3)3

NTS 2016 DUHS & JSMU
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) 3-ethyl-2, 2, 4-trimethyl pentane

B) 4-ethyl-2, 2, 4-trimethyl pentane

C) 5-ethyl-2, 2, 4-trimethyl pentane

D) 2-ethyl-2, 2, 4-trimethyl pentane

38 / 100

Category: Chemistry Ch 11 Class 11

Metaboric acid when heated produces:

NTS 2016 DUHS & JSMU
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) B2O3

B) HBO2

C) H2B4O7

D) H3BO3

39 / 100

Category: Chemistry Ch 11 Class 11

The rate of a chemical reaction is directly proportional to the product of active masses of the reactants, it is referred to as:

NTS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) Law of conservation of energy

B) Law of mass action

C) Law of conservation of mass

D) Active mass law

40 / 100

Category: Chemistry Ch 4 Class 12

Unpaired electron trend of transition elements:

PMC 2021 Tested
Chemistry
d and f Block Elements
Elimination Tool:

A) Increases till Mn and decreases till Zn

B) Remains unchanged

C) Decreases

D) Increase

41 / 100

Category: Chemistry Ch 15 Class 12

The suspected liver carcinogen which also has negative reproduction and developmental effect on humans is:

UHS 2011
Chemistry
Environmental Chemistry
Elimination Tool:

A) Iodoform

B) Bromoform

C) Tropoform

D) Chloroform

42 / 100

Category: Chemistry

Q.176 Quantum number values for 2p orbítals are

A. n=2,l=1

B. n= 1.l=2

C. n =1,1l=0

D. n=2,l=2

43 / 100

Category: Chemistry

What type of chemical reaction is this?
CH3CHO + NH3 -> CH3CH(OH)NH2

NUMS Mock 3
Chemistry
Aldehydes and Ketones

A) Addition – elimination

B) Electrophilic addition

C) Free radical addition

D) Nucleophilic addition

44 / 100

Category: Chemistry Ch 4 Class 11

Atoms in solids are

PMC Sample 3
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Loosely Packed

B) In random motion

C) Excited

D) Closely packed

45 / 100

Category: Chemistry

Q.105 Ethane is obtained by electrolyzing-

A. Potassium format

B. Potassium succinate

C. Potassium acetate

D. Potassium fumarate

46 / 100

Category: Chemistry Ch 3 Class 11

Liquid crystals are used for:

Making LCD

Making thermometers

Optical Imaging

All of these

47 / 100

Category: Chemistry Ch 7 Class 11

Some substances lack definite heats of fusion. These substances are:

NUMS 2020
Chemistry
Thermochemistry
Elimination Tool:

A) Isomorphs

B) Polymorphs

C) Amorphous solids

D) Crystalline solids

48 / 100

Category: Chemistry Ch 6 Class 12

Acidified K2Cr2O7 is also called:

Ceramic acid

Chromic Acid

Dichromate

None of these

49 / 100

Category: Chemistry Ch 10 Class 11

In the reaction 2Fe+Cl2 2FeCl3

NTS 2017
Chemistry
Electrochemistry
Elimination Tool:

A) Fe is reduced

B) Fe is oxidized

C) Cl2 oxidized

D) None of the above

50 / 100

Category: Chemistry

Q.172 Dipole forces has direct relation with the

A. Chemical properties of a substance

B. Kinetic properties of substance

C. Thermodynamic properties of substance

D. Nature of substance

51 / 100

Category: Chemistry

Sodium Benzoate on reacting with soda lime forms:

NUMS Mock 4
Chemistry
Carboxylic Acids and its Derivatives

A) Benzoic Acid

B) Benzene

C) Toluene

D) Benzaldehyde

52 / 100

Category: Chemistry Ch 6 Class 11

Which one of the following has the lowest % ionic character?

NTS 2016 DUHS & JSMU
Chemistry
Chemical Bonding
Elimination Tool:

A) CCl4

B) BCl3

C) BeCl2

D) LiCl

53 / 100

Category: Chemistry Ch 12 Class 12

Treatment of propionaldehyde with Dil. the NaOH solution gives:

NUMS 2016
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) CH3 CH2COOCH2C2H5

B) CH3 CH2 CHOH CH2 CH2 CHO

C) CH3 CH2 CH (OH) CH(CH3) CHO

D) CH3 CH2 COCH2 CH2 CHO

54 / 100

Category: Chemistry

Phenylmethyl ketone can be converted into ethyl benzene in one step by using:

NUMS Mock 4
Chemistry
Aldehydes and Ketones

A) LiAlH4

B) Zn(Hg)-HCl

C) NaBH4

D) CH3Mgl

55 / 100

Category: Chemistry Ch 3 Class 11

Gases can be converted into liquid by:

Increasing temperature and decreasing pressure

Decreasing temperature and increasing pressure

Same temperature and pressure

Increasing pressure and temperature

56 / 100

Category: Chemistry Ch 2 Class 11

A residue is obtained In which of the following methods?

Crystallization

Filtration

Condensation

Decantation

57 / 100

Category: Chemistry Ch 8 Class 11

The following changes to the system at equilibrium have no effect on Kc except:

NUMS 2017
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Increasing reactant concentrations

B) Equal number of reactant and product gas molecules

C) Increasing temperature

D) Using a catalyst

58 / 100

Category: Chemistry Ch 5 Class 12

The reduction of which of the following produces Hydrofluoric acid?

a) XeF2

XeF4

Xe F6

All of the above

59 / 100

Category: Chemistry

Alkenes undergo:

NUMS Mock 2
Chemistry
Hydrocarbons

A) Electrophilic Addition

B) Electrophilic substitution

C) Nucleophilic substitution

D) Nucleophilic addition

60 / 100

Category: Chemistry

Which of the following has the least electron affinity value?

NUMS Mock 1
Chemistry
Periodicity in Elements

A) 12 C 6

B) 14 N 7

C) 16 8 7

D) 19F 9

61 / 100

Category: Chemistry Ch 9 Class 11

If 18.0 g of glucose is dissolved in 1 kg of water, boiling point of this solution should be:

UHS 2013
Chemistry
Solution and Colloids
Elimination Tool:

A) 100.52 °C

B) 100.00 °C

C) 100.052 °C

D) Less than 100 °C

62 / 100

Category: Chemistry Ch 10 Class 12

atalyst used in the preparation of alkyl halide from alcohol

Platinum/charcoal

LiH4

Rock salt

ZnCl2

63 / 100

Category: Chemistry Ch 4 Class 12

Au3+ has __________ configuration.

PMC Practice 5
Chemistry
d and f Block Elements
Elimination Tool:

A) 5d7

B) 4d9

C) 5d8

D) 5d10

64 / 100

Category: Chemistry Ch 13 Class 12

Chemical formula of Malonic acid:

C3H8O4

C2H204

C6H12O6

C3H4O4

65 / 100

Category: Chemistry Ch 15 Class 12

What is the catalyst used in the Haber process?

H₂ + N₂ ⟶ NH₃

PMC 2021 Tested
Chemistry
Industrial Chemistry
Elimination Tool:

A) Chlorine

B) Iron

C) Magnesium

D) Calcium

66 / 100

Category: Chemistry Ch 6 Class 11

Second Ionization energy of M atom

Higher than first ionization energy

Lower than first ionization energy

Very low

None of these

67 / 100

Category: Chemistry Ch 9 Class 11

The compound with more than 10% solubility in pure water is:

ETEA 2018
Chemistry
Solution and Colloids
Elimination Tool:

A) M???3

B) A?2(??3)3

C) K2??3

D) ????3

68 / 100

Category: Chemistry Ch 8 Class 12

In alkanes all carbon atoms are linked by bond

Triple

Single

Double bonds

Alternative

69 / 100

Category: Chemistry Ch 13 Class 12

Which of the following reagent is required for preparation of acyl chloride (CH3COCl) from ethanoic aicd?

UHS 2019
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) PCl5

B) POCl3

C) CH3Cl

D) HCl

70 / 100

Category: Chemistry

Q.173 Critical temperature of ammonia is C

A. 31.14

B. 13.24

C. 132.44

D.1.11

71 / 100

Category: Chemistry Ch 15 Class 12

Genetic mutations occur in:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

A) RNA

B) Protein

C) DNA

D) All of the above

72 / 100

Category: Chemistry

Q.122 Glycoprotein is classified as

A. Simple protein

B. Conjugated protein

C. Derived protein

D. Non-conjugated protein

73 / 100

Category: Chemistry

When a charged particle is projected perpendicular to a magnetic field:

NUMS Mock 4
Physics
Electrostatics

A) Its path is circular in a plane perpendicular to the plane of magnetic field

B) The speed and kinetic energy of the particle remains constant

C) The velocity and momentum of the particle changes only in direction

D) The time period of revolution and angular frequency of revolution is independent of the velocity of the particle and radius of the circular path

74 / 100

Category: Chemistry Ch 5 Class 11

Which of the following orbital will be filled first than 4p?

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) 4s

B) 2p

C) 3d

D) 1s

75 / 100

Category: Chemistry Ch 4 Class 11

Vapor pressure of a liquid depends upon

) Nature of liquid

Temperature

Both a and b

Atomic Pressure

76 / 100

Category: Chemistry Ch 14 Class 12

Adipic acid and Hexamethylene dlamine combine to form?

Nylon-6,6

Epoxy Resin

Polystyrene

Polyvinyl chloride

77 / 100

Category: Chemistry Ch 4 Class 11

Which one of the following has crystalline structure?

Diamond

Sugar

Boron Nitride

Lithium Carbide

All of these

78 / 100

Category: Chemistry Ch 11 Class 12

Treatment of ethene with cold sulphuric acid, followed by reaction with boiling water, yields:

UHS 2019
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Ethane

B) Ethanal

C) Ethanol

D) Ethyne

79 / 100

Category: Chemistry Ch 12 Class 12

Ketone can be prepared by the oxidation of:

Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

80 / 100

Category: Chemistry Ch 12 Class 12

What one is the correct geometry of acetal?

PreMedPK MDCAT Mock 3
Aldehydes and Ketones
Elimination Tool:

A) Trigonal

B) Linear

C) Tetrahedral

D) Square planer

81 / 100

Category: Chemistry Ch 4 Class 11

Which of the following compound has the highest boiling point?

Water

HCL

Ammonia

HF

82 / 100

Category: Chemistry

Q.95 250cm3 of a hypothetical gas is cooled from 127°C to –73°C by maintaining the pressure constant. The new volume of the gas at low temperature is

A. 0.25dm3

B. 125 cm3

C. 1.25dm3

D. 250cm3

83 / 100

Category: Chemistry Ch 10 Class 12

The term “Nucleophile” means:

Nucleus Loving

Nucleus hating

Amphiphilic

None of these

84 / 100

Category: Chemistry

Identify the correct statement:

NUMS Mock 3
Chemistry
s and p Block Elements

A) Element sodium can be prepared and isolated by electrolyzing an aqueous solution of NaCl

B) Elemental Na is a strong oxidizing agent

C) Elemental Na is insoluble in NH3

D) Elemental Na is easily oxidizing

85 / 100

Category: Chemistry Ch 15 Class 12

How many grams of micronutrients are needed by 1 acre of land?

100-1000

200-500

6 to 200

20 to 300

86 / 100

Category: Chemistry Ch 1 Class 12

Metals usually produce hydrogen gas with acids. Which of the following produces hydrogen gas with NaOH?

Zn

Cu

Al

Ni

87 / 100

Category: Chemistry Ch 8 Class 12

Unsaturated Compound containing double bond is:

Alkane

Alkene

Alkyne

Alkylene

88 / 100

Category: Chemistry Ch 13 Class 12

Which one of these is a soluble carbohydrate:

Fructose

Starch

Cellulose

Amylase

89 / 100

Category: Chemistry

Impurities of lead in silver are removed by:

NUMS Mock 2
Chemistry
d and f Block Elements

A) Parke’s process

B) Solvay process

C) Cyanide process

D) Amalgamation process

90 / 100

Category: Chemistry

Q.140 Which of the following acid solution is used for the seasoning of food?

A. Butyric acid

B. Phthalic acid

C. Lactic acid

D. Acetic acid

91 / 100

Category: Chemistry Ch 1 Class 12

Maximum ionization potential is of:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

A) Ca

B) Na

C) Be

D) Mg

92 / 100

Category: Chemistry Ch 1 Class 11

The unit used to express the relative atomic mass is called?

Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) Gram unit.

B) Avigadro's number.

C) Atomic mass.

D) Atomic mass unit.

93 / 100

Category: Chemistry Ch 1 Class 12

The binding energy of transition metal increases upto group:

NUMS 2020
Chemistry
Periodicity in Elements
Elimination Tool:

A) IIB

B) IVB

C) IIIB

D) VIB

94 / 100

Category: Chemistry Ch 2 Class 12

Magnesium oxide is used in:

NTS 2015 DUHS and JSMU
Chemistry
s and p Block Elements
Elimination Tool:

A) as antacid

B) as reractory material

C) vulcanisation of rubber

D) all of the above

95 / 100

Category: Chemistry Ch 7 Class 11

Through what phenomenons does heat flow?

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

A) Conduction

B) Convection

C) Radiation

D) All of these

96 / 100

Category: Chemistry Ch 11 Class 11

75% of a first order reaction is completed in 36 minutes. What is the half life of the reaction?

NUMS 2017
Chemistry
Reaction Kinetics
Elimination Tool:

A) 27 min

B) 24 min

C) 18 min

D) 42 min

97 / 100

Category: Chemistry Ch 7 Class 12

CH3CH2CH2COCH3 is the functional isomer of:

NTS 2016 DUHS & JSMU
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) CH3CH2CH2CH2CHO

B) CH3CH2CH2CH2OH

C) CH3CH2COCH2CH3

D) CH3 – (CH)2 COCH2CH3

98 / 100

Category: Chemistry Ch 5 Class 11

The radius of the third Bohr orbit is:

NTS 2016 DUHS & JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) 0.529 Å

B) 0.529 / 4 Å

C) 0.529 x 2 Å

D) 0.529 x 32 Å

99 / 100

Category: Chemistry Ch 2 Class 12

Which of the following is not true about caustic soda? a) It causes painful burns c) It is manufactured by Costner—Kellner process e) Both b and d

) It causes painful burns

It is manufactured by Costner—Kellner process

Both b and d

b) It has purgative smell

d) It is used os on anti-acid

100 / 100

Category: Chemistry Ch 6 Class 11

Which of the following molecules have zero Dipole moments?

NTS 2011
Chemistry
Chemical Bonding
Elimination Tool:

A) CCl4

B) CO2

C) Cl2

D) C6H6

E) All of the above

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