Chemistry Practice Tests 5

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Chemistry Practice Test 5

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1 / 100

Category: Chemistry

Q.131 BH3 has a geometry with H-B-H bond angles of 12

A. Linear

B. Tringonal planar

C. Tetrahedron

D. Bent

2 / 100

Category: Chemistry Ch 11 Class 11

Which of the following oxides is amphoteric in character?

NUMS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) CaO

B) CO2

C) SiO2

D) SnO2

3 / 100

Category: Chemistry Ch 7 Class 11

Energy for the endothermic reaction is given a ____ value?

PMC Practice 1
Chemistry
Thermochemistry
Elimination Tool:

A) Positive

B) Negative

C) Zero

D) Neither positive nor negative

4 / 100

Category: Chemistry Ch 4 Class 11

if the crystal structure of Graphite is Hexagonal, the crystal system of Diamond will be:

Tetrahedral

Pyramidal

Cubic

Pentagonal

5 / 100

Category: Chemistry Ch 13 Class 12

For preparation of carboxylic acid, alkyl nitrite is required. Alkyl nitrite can be prepared by treating KCN with:

Alkyl halide

Alcohol

Water

Acetaldehyde

6 / 100

Category: Chemistry Ch 2 Class 12

Which of the following is unstable?

Li2CO3

MgCO3

c) Both a and b

Both are stable

7 / 100

Category: Chemistry Ch 5 Class 12

Oxides of xenon are formed from:

XeF6

XeF4

XeF2

All of these

8 / 100

Category: Chemistry Ch 9 Class 11

The solubility product for BaSO4 , at 18-25°C is:

NTS 2015 DUHS and JSMU
Chemistry
Solution and Colloids
Elimination Tool:

A) 1.0 x 10-10mol2dm-6

B) 8.7 x 10-36mol2dm-6

C) 1.8 x 10-21mol2dm-6

D) 8.4 x 10-28mol2dm-6

9 / 100

Category: Chemistry

Q.96 Heat supplied at constant pressure equals to

A. Activation Energy

B. Internal energy change

C. Entropy

D. EnthalpyM

10 / 100

Category: Chemistry Ch 1 Class 11

Actual yield is always experimental yield.

Less than

More than

Same as

None of the above

11 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is the most environmentally friendly source to derive energy?

NUMS 2017
Chemistry
Environmental Chemistry
Elimination Tool:

A) Lead-acid accumulator

B) H2- O2fuel cell

C) Silver oxide battery

D) Alkaline battery

12 / 100

Category: Chemistry Ch 12 Class 12

In which of the following reaction alkyl ketones are converted Into carboxylic acid with one carbon atom less than the parent compound?

Haloform

Cannizzaro

Aldol

None

13 / 100

Category: Chemistry Ch 6 Class 11

Which of the following has the highest value of electronegativity?

PMC 2020
Chemistry
s and p Block Elements
Chemical Bonding
Elimination Tool:

A) I

B) Br

C) Cl

D) F

14 / 100

Category: Chemistry Ch 1 Class 11

The number of neutrons in H2SO4 are ____.

PMC Practice 26
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 5

B) 49

C) 48

D) 44

15 / 100

Category: Chemistry

Which carbohydrate Is soluble in water?

Cellulose

Starch

Amylase

Fructose

16 / 100

Category: Chemistry Ch 8 Class 12

Which of the following compounds possesses a single covalent bond between carbon and hydrogen?

PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
Elimination Tool:

A) CH4

B) C2H2

C) C2H4

D) All of the above

17 / 100

Category: Chemistry Ch 5 Class 11

Maximum ____ electrons can be placed in one orbital:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) 1

B) 2

C) 3

D) 4

18 / 100

Category: Chemistry Ch 3 Class 12

Identify from the following the example in which the complex is an anion:

NTS 2016 SMBBMC
Chemistry
d and f Block Elements
Elimination Tool:

A) [Co(en)3](NO3)3

B) [Co(NH3)3(NO2)3]

C) K3[Co(NO2)6]

D) [Pt(NH3)2Cl4]T

19 / 100

Category: Chemistry Ch 15 Class 12

The pH of acid rain is

UHS 2014
Chemistry
Environmental Chemistry
Elimination Tool:

A) 7

B) Between 5 and 7

C) Below 5

D) Between 7 and 14

20 / 100

Category: Chemistry Ch 13 Class 12

Which one is the carbonyl protecting group?

Carboxylic acid

Ester

Alcohol

Amino Derivatives

21 / 100

Category: Chemistry Ch 6 Class 11

Which of the following contains the coordinate covalent bond?

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) N2H5+

B) BaCl2

C) HCl

D) H2O

22 / 100

Category: Chemistry Ch 5 Class 12

Which of the following is the highest oxidizing agent?

F2

Cl2

Br2

I2

23 / 100

Category: Chemistry Ch 3 Class 11

A sample of gas weighs 1.25 g, at 28 C occupying a volume of 2.50 x 10-2 ml and its pressure is 715 torr. What is the molar mass in grams?

NTS 2016 DUHS & JSMU
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) 131.1

B) 1.311

C) 1.212

D) 122.1

24 / 100

Category: Chemistry Ch 4 Class 11

Covalent bond is stronger than hydrogen bond by:

10 times

20 times

30 times

50 times

25 / 100

Category: Chemistry

IUPAC name of C6H5-CH2-CH2-NH2 is:

NUMS Mock 4
Chemistry
Fundamental Principles of Organic Chemistry

A) 2-phenyl ethenamine

B) 2-phenyl ethanamine

C) 2-phenyl ethylamine

D) 3-phenyl ethanamine

26 / 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

27 / 100

Category: Chemistry Ch 8 Class 12

The major source of unburnt hydrocarbons in the atmosphere is / are:

NUMS 2016
Chemistry
Hydrocarbons
Elimination Tool:

A) Petroleum

B) Natural gas

C) Automobiles

D) Human beings

28 / 100

Category: Chemistry Ch 3 Class 11

At the transition temperature of a crystalline solid, the substance exists:

NUMS 2020
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) In most stable geometric form

B) Solid and liquid state

C) In dynamic equilibrium between two crystalline forms

D) In one solid geometrical form only

29 / 100

Category: Chemistry Ch 9 Class 12

Acetylene upon heating at 300 C gives:

Benzene

Alkene

Alkane

Alcohol

30 / 100

Category: Chemistry Ch 6 Class 12

Acidified K2Cr2O7 is also called:

Ceramic acid

Chromic Acid

Dichromate

None of these

31 / 100

Category: Chemistry Ch 4 Class 12

What are interstitial compounds?

PMC Sample 2
Chemistry
d and f Block Elements
Elimination Tool:

A) Transition elements containing small proportion of H, B, C, N

B) Transition elements containing small proportion of He, Ne, Ar, Xe

C) The compounds in which transition elements are in their highest oxidation state.

D) The compounds of transition elements which are not stable.

32 / 100

Category: Chemistry Ch 9 Class 12

Which of the following gases is used for welding purpose:

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) ethene

B) ethane

C) propane

D) ethyne

33 / 100

Category: Chemistry

The indicator is a colored compound?

Organic

Inorganic

Acidic

Basic

34 / 100

Category: Chemistry Ch 15 Class 12

Percentage of nitrogen by volume in air is:

UHS 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) 78%

B) 50%

C) 20%

D) 98%

35 / 100

Category: Chemistry Ch 3 Class 11

Solid NaCl is a bad conductor of electricity because:

NUMS 2016
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Solid NaCl is covalent

B) In the solid state, there are no ions

C) In solid NaCl. there is no migration of ions

D) In solid NaCl, there are not electron

36 / 100

Category: Chemistry Ch 13 Class 12

Which of the following is correct general formula of aliphatic carboxylic acid ?

PMC Sample 3
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) RCOOH

B) ArCOOH

C) PhCOOH

D) None of these

37 / 100

Category: Chemistry Ch 7 Class 12

Which class of compounds cannot show positional isomerism?

PMC Sample 1
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) alkane

B) alkene

C) alkyne

D) alcohol

38 / 100

Category: Chemistry Ch 1 Class 12

Which one of the following is acidic?

B(OH)3

Ca(OH)2

Mg(OH)3

NaOH

39 / 100

Category: Chemistry

Which of the following is least polarizable?

NUMS Mock 1
Chemistry
s and p Block Elements

A) Ne

B) He

C) X

D) Kr

40 / 100

Category: Chemistry Ch 1 Class 12

According to which phenomenon, “the properties of elements are the periodic function of their atomic number.”

NTS 2012
Chemistry
Periodicity in Elements
Elimination Tool:

A) Mendeleev's periodic law

C) Doberenier's triads

D) Lothar Meyer’s classification

E) Modern periodic law

41 / 100

Category: Chemistry Ch 11 Class 11

The effect of temperature on the rate of a reaction is given by:

NUMS 2020
Chemistry
Reaction Kinetics
Elimination Tool:

A) Henderson’s equation

B) General gas equation

C) Arrhenius equation

D) Van der Waals equation

42 / 100

Category: Chemistry Ch 12 Class 12

Why is water added after the reduction process of aldehyde and ketone with LiAlH4?

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Because water reacts violently with LiAlH4

B) Because water will protonate LiAlH4

C) Because water inhibits the process

D) Because it will result to alkenes

43 / 100

Category: Chemistry Ch 14 Class 12

The sugar unit in DNA molecule is:

NUMS 2019 Reconduct
Chemistry
Macromolecules
Elimination Tool:

A) Ribose

B) 2 – deoxyribose

C) 3 – deoxyribose

D) 2 – deoxypentose

44 / 100

Category: Chemistry Ch 9 Class 11

Lowering of vapor pressure Is directly proportional to: a)

Temperature

Mole fraction of Solute

Mole fraction of Solvent

Amount of solution

45 / 100

Category: Chemistry Ch 3 Class 12

) Aluminium is agent?

Good oxidizing

Weak reducing

Good reducing

Both oxidizing and reducing agent

46 / 100

Category: Chemistry

Example of a nucleophile is:

NUMS Mock 1
Chemistry
Fundamental Principles of Organic Chemistry

A) BF3

B) AlCl3

C) SO3

D) CN

47 / 100

Category: Chemistry Ch 2 Class 11

106 gram of Na2CO3 per dm3 of the solution of Na2CO3 in water, the concentration of the solution will be:

NTS 2018
Chemistry
Stoichiometry
Elimination Tool:

A) 1N

B) 0.1 M

C) 1M

D) 0.02M

48 / 100

Category: Chemistry Ch 2 Class 12

Which of the following elements has the highest boiling point?

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Li

B) Mg

C) Sr

D) Be

49 / 100

Category: Chemistry Ch 3 Class 12

Prussian blue is:

NUMS 2014
Chemistry
d and f Block Elements
Elimination Tool:

A) K2Fe[FeCN6]

B) K4[FeCN6]

C) Fe4[Fe(CN)6] 3xH2O

D) K3FeCN6

50 / 100

Category: Chemistry Ch 6 Class 11

The number of bond(s) between carbon and nitrogen atoms in a Nitrile is:

NTS 2018
Chemistry
Chemical Bonding
Elimination Tool:

A) One sigma and one pi

B) Two sigma and one pi

C) Only sigma

D) One sigma and two pi

51 / 100

Category: Chemistry Ch 9 Class 11

Which statement is correct?

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

A) Amorphous solids have sharp melting Points

B) Amorphous solids have zero percent arranged

C) Amorphous Solids have a range of melting points

D) Amorphous solids have definite heat of fusion

52 / 100

Category: Chemistry

Q.75 Metallic character depends on.

A. Electron affinity

B. Ionization energy

C. Electronegativity

D. All of these

53 / 100

Category: Chemistry Ch 12 Class 12

Which of the following does not give iodoform test?

NUMS 2014
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Ethanol

B) Ethanal

C) Acetophenone

D) Benzophenone

54 / 100

Category: Chemistry Ch 11 Class 11

Type of reactants or product decides the nature of method adapted for finding

PMC Sample 1
Chemistry
Reaction Kinetics
Elimination Tool:

A) Rate constant

B) Enthalpy

C) Temperature

D) Rate of a Reaction

55 / 100

Category: Chemistry Ch 15 Class 12

Which of the following gas, when ignited, burns with a blue flame and is not very soluble in water?

UHS 2018
Chemistry
s and p Block Elements
Environmental Chemistry
Elimination Tool:

A) O2

B) CO2

C) N2

D) He

56 / 100

Category: Chemistry

Q.99 Which forces are very significant in non-polar molecules like Cl2, H2 and noble gases

A. Dipole-dipole

B. Induced dipole

C. London

D, Spontaneous induced dipole

57 / 100

Category: Chemistry Ch 3 Class 12

Burning of amorphous Boron in air forms

B(OH)3

B203

BN

Mixture of B203& BN

58 / 100

Category: Chemistry Ch 3 Class 12

Which of the following transition metals has the highest variable oxidation state?

NUMS 2019 Cancelled
Chemistry
d and f Block Elements
Elimination Tool:

A) W

B) Pt

C) Hg

D) Mn

59 / 100

Category: Chemistry Ch 12 Class 12

Meta-formaldehyde molecule has Oxygen MOMS:

One

Two

Three

Five

60 / 100

Category: Chemistry Ch 4 Class 12

Oxidation Number of all the elements in the free state is?

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

A) Unity

B) Positive

C) Zero

D) Negative

61 / 100

Category: Chemistry Ch 3 Class 11

The unit of viscosity is:

NTS 2012
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Joule

B) N/m2

C) Dynes/cm

D) Poise

62 / 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

63 / 100

Category: Chemistry Ch 2 Class 12

The false statement regarding saline hydrides is:

NTS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) They are formed from hydrogen and most electropositive element

B) They are used as reducing agents

C) They give H2 from H2O

D) They are ionic in nature

64 / 100

Category: Chemistry Ch 4 Class 11

A liquid has mass m and specific heat capacity c. The rate of change in temperature of the liquid is R. What is the rate at which heat is transferred from the liquid.

PMC Practice 2
Physics
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Rmc

B) R/me

C) me/R

D) Rm/c

65 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is NOT a “raw material” used in the Solvay process?

NTS 2016 SMBBMC
Chemistry
Macromolecules
Elimination Tool:

A) Sodium Chloride

B) Sodium Carbonate

C) Limestone

D) Ammonia gas

66 / 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

67 / 100

Category: Chemistry Ch 8 Class 11

A reaction with a tendency of occurring in forward and backward direction simultaneously is termed as

PMC Sample 2
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Irreversible

B) Unidirectional

C) Multidirectional

D) Reversible

68 / 100

Category: Chemistry Ch 4 Class 11

A fixed mass of an ideal gas is contained in a cylinder at constant temperature. Now, the pressure of the gas is decreased.

What happened to the molecules of gas?

PMC Practice 1
Physics
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Their mean square speed decreases

B) Number of collision between molecules and walls of container decreased

C) The force of attraction between them increase

D) Their size decreases

69 / 100

Category: Chemistry Ch 5 Class 11

Which of the following does not show variable valency?

NUMS 2015
Chemistry
Atomic Structure
Elimination Tool:

A) Mn

B) Fe

C) Zn

D) Cr

70 / 100

Category: Chemistry Ch 11 Class 12

In which of the following reaction does the C-O bond of alcohol not break?

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

A) Reaction with SOCl2

B) Dehydration

C) Esterification

D) All of these options are correct

71 / 100

Category: Chemistry Ch 8 Class 11

Equilibrium constant has no units if?

The number moles are same on both sides of the chemical equation

The number of moles is different on both sides.

The number of moles is greater in the product

If the rate of reaction is constant

72 / 100

Category: Chemistry Ch 14 Class 12

Which of the following is a monosaccharide ?

Maltose

Sucrose

lactose

Fructose

73 / 100

Category: Chemistry Ch 4 Class 12

H3PO3 is

Weak reducing agent

Strong reducing agent

Strong oxidizing agent

Weak oxidizing agent

74 / 100

Category: Chemistry

Which of the following are the fundamental ways of transferring energy?

NUMS Mock 3
Chemistry
Thermochemistry

A) Pressure and work

B) Volume and pressure

C) Heat and work

D) Pressure and heat

75 / 100

Category: Chemistry Ch 11 Class 12

14) Ethanol and Methanol can be separated by:

Cannizzaro's reaction

Iodoform test

b) Lucas Test

Tolien's test

76 / 100

Category: Chemistry Ch 13 Class 12

Which one of the following compounds act as a catalyst when alcohols react with carboxylic acids.

UHS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Pt

B) Conc. HNO3

C) Ni

D) Conc. H2SO4

77 / 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

78 / 100

Category: Chemistry Ch 8 Class 11

If 4.6 gm of ethyl alcohol and 6.0 gm of acetic acid is kept at a constant temperature until equilibrium was established, 2.0 gm of unused acetic acid were present. What is the Kc?

NTS 2016 SMBBMC
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 2.0

B) 3.0

C) 4.0

D) 5.0

79 / 100

Category: Chemistry Ch 6 Class 11

Ionization potential

Increases down the group

Decreases down the group

Stay same

None

80 / 100

Category: Chemistry Ch 10 Class 11

The breakdown of a substance with current is:

NUMS 2020
Chemistry
Electrochemistry
Elimination Tool:

A) Thermolysis

B) Catalysis

C) Electrolysis

D) Photolysis

81 / 100

Category: Chemistry Ch 4 Class 12

The transition elements belongs to Group VI B are

PMC Practice 6
Chemistry
d and f Block Elements
Elimination Tool:

A) Zn, Cd, Hg

B) Fe, Ru, Os

C) Mn, Te, Re

D) Cr, Mo, W

82 / 100

Category: Chemistry Ch 11 Class 11

As the concentration of reactant increases, the rate of reaction also increases, it is because:

NUMS 2018
Chemistry
Reaction Kinetics
Elimination Tool:

A) K.E. increases in molecules

B) Oscillation increases between molecules

C) Collisions frequency increases

D) Temperature of molecules increases

83 / 100

Category: Chemistry Ch 1 Class 12

Variable valency is shown by which of the following elements?

Na

Co

Mg

AI

84 / 100

Category: Chemistry Ch 8 Class 12

Electrophile in sulphonation of benzene is:

PMC 2020
Chemistry
Hydrocarbons
Elimination Tool:

A) HSO4-

B) H2SO4

C) SO3

D) HSO3

85 / 100

Category: Chemistry Ch 13 Class 12

Solubility of carboxylic acids in water decrease with

Decrease in molecular mass

Increase in molecular mass

Both a and b

None of these

86 / 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

87 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is not soluble In alcohol?

Resins and varnishes

Soaps and varnishes

Rubbers and plastics

Dyes and drug'

88 / 100

Category: Chemistry Ch 13 Class 12

Acetic anhydride is a product of acetic acid, as a result of the following reaction:

NUMS 2020
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Dehydration

B) Reduction

C) Oxidation

D) Esterification

89 / 100

Category: Chemistry Ch 8 Class 11

For a gaseous phase reaction, when number of moles of reactants and products are equal:

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) The values of Kp and Kc are different

B) The value of Kp is greater than Kc

C) The value of Kc is greater than Kp

D) The values of Kp and Kc are the same

90 / 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

91 / 100

Category: Chemistry Ch 10 Class 11

Which one has valency other than one?

Mn in KMnO4

K in KCL

Br in Br2O

Na in NaCI

92 / 100

Category: Chemistry Ch 8 Class 12

Benzene can be prepared from:

PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
Elimination Tool:

A) From Petroleum

B) From Coal

C) From Acetylene

D) From Phenol

E) Al of these

93 / 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

94 / 100

Category: Chemistry Ch 9 Class 11

The elevation in boiling point ∆?? is equal to ebullioscopic constant ?? when the Molarity (?) of the solution is:

ETEA 2018
Chemistry
Solution and Colloids
Elimination Tool:

A) 0.1m

B) 1.0m

C) 10.0m

D) Statement is wrong

95 / 100

Category: Chemistry

Q.159 An aromatic compound that can obtained from coal tar is

A. Benzene

B. Toluene

C. Phenol

D. Diphenylmethane

96 / 100

Category: Chemistry Ch 5 Class 11

The Neutron was discovered by:

NTS 2018
Chemistry
Atomic Structure
Elimination Tool:

A) Goldstein

B) Rutherford

C) J.J Thomson

D) Chadwick

97 / 100

Category: Chemistry Ch 14 Class 12

The polymer containing acrylonitrile as a monomer is:

PMC 2021 Tested
Chemistry
Macromolecules
Elimination Tool:

A) Polyacrylonitrile

B) Rayon fibre

C) PVC

D) Teflon

98 / 100

Category: Chemistry Ch 5 Class 11

The relationship between quantum number n and l is:

PMC 2020
Chemistry
Atomic Structure
Elimination Tool:

A) n = l – 1

B) l = n – 2

C) l = n – 1

D) n = l – 2

99 / 100

Category: Chemistry Ch 5 Class 11

Diameter of Hydrogen atom is?

105.8 x 10-2 A

1.061 A

0.55 A

131.3 x 10-2A

100 / 100

Category: Chemistry Ch 15 Class 12

Ozone concentration is measured in:

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

A) Debye units

B) Dupont units

C) Debacle units

D) Dobson units

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