Chemistry Practice Tests 2

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Chemistry Practice Test 2

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1 / 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

2 / 100

Category: Chemistry Ch 4 Class 11

Amorphous solids turns into glass like state from rubber like state, this is called

PMC Sample 1
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) transition

B) crack transition

C) glass transition

D) all of these

3 / 100

Category: Chemistry Ch 12 Class 12

What is the color of the precipitate when Brady’s reagent is used to test a benzaldehyde?

NUMS 2019 Cancelled
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Green

B) Brown

C) Magenta

D) Red

4 / 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

5 / 100

Category: Chemistry Ch 8 Class 12

Alkanes having five to seventeen carbon atoms per molecule are:

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

A) liquids

B) solids

C) gases

D) semi solid wax

6 / 100

Category: Chemistry Ch 6 Class 11

Which theory deals with hybridization of orbitals?

VBT

MOT

VSEPR

None of these

7 / 100

Category: Chemistry Ch 4 Class 11

Gas is enclosed in a container of 20 cm3 with the moving piston. According to kinetic theory of gases, what will be the effect on freely moving molecules of the gas if temperature is increased from 20 C to 100 C?

UHS 2018
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Pressure will become one half

B) Volume will be increased

C) Temperature has no effect on freely moving molecules

D) Colliding capability of molecule will become lower

8 / 100

Category: Chemistry

Q.30 How meta directing groups affect the Electrophilic substitution of benzene ring?

A. Increase electron density at ortho para position

B. Decrease electron density at ortho and para positions

C. Make benzene less reactive

D. Both B and C

9 / 100

Category: Chemistry Ch 2 Class 12

Aqueous solution of Na2CO3is:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) Acidic

B) Alkaline

C) Both Acidic and Alkaline

D) Neutral

10 / 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

11 / 100

Category: Chemistry Ch 11 Class 11

The unit of rate of reaction is:

NTS 2011
Chemistry
Reaction Kinetics
Elimination Tool:

A) Mole (dm3) sec

B) Mole (dm3) sec-1

C) Mole(dm-3) sec -1

D) Mole(dm3)sec-2

12 / 100

Category: Chemistry Ch 8 Class 12

20 cm3 of a gaseous hydrocarbon was completely burnt in an excess of oxygen 60 cm3 of carbon dioxide and 40 cm3 of water vapours were formed, all volumes being measured at the same temperature and pressure. What is the formula of the hydrocarbon?

NTS 2015 SMBBMC
Chemistry
Hydrocarbons
Elimination Tool:

A) C2H6

B) C3H4

C) C3H6

D) C3H8

13 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is a Marco-nutrient

Boron

Copper

Iron

Nitrogen

14 / 100

Category: Chemistry Ch 4 Class 11

Which of the following is not a property of liquids:

No motion

Collision of molecules

Diffusion

All of these

15 / 100

Category: Chemistry Ch 3 Class 11

The expression PV = nRT represents the:

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

A) Dalton’s Law

B) Avogadro’s Law

C) General gas equation

D) Van der Waals equation

16 / 100

Category: Chemistry Ch 4 Class 11

Covalent bond is stronger than hydrogen bond by:

10 times

20 times

30 times

50 times

17 / 100

Category: Chemistry Ch 7 Class 12

Which one is not an organic compound?

NUMS 2014
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Fats

B) Water

C) Carbohydrates

D) None

18 / 100

Category: Chemistry Ch 2 Class 12

By heating 25g of limestone (CaCO3) , the weight of carbon dioxide produced is

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) 14 g

B) 71 g

C) 11 g

D) 2 g

19 / 100

Category: Chemistry Ch 13 Class 12

The carbonic acid which Is named after butter is:

Capric acid

Enanthic acid

Butyric Acid

Formic acid

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 3 Class 11

Which of the following statements is true of Amorphous solids?

NTS 2011
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) They possess symmetry

B) They are isotropic

C) They are anisotropic

D) They cleave along a particular direction

22 / 100

Category: Chemistry

Q.106 +G108 The Markownikof’s rule is applicable only on

A. 2-Butene

B. 2-Bromo-3-chloro-2-butene

C. 2,3-Dimethyl-2-butene

D. 2-Methyl-2-butene

23 / 100

Category: Chemistry Ch 4 Class 11

Viscosity of HF is: c) y d) a) Greater than 1120 b) Smaller than F120 c) Equal to HIO d) Plane of these

Greater than H2O

Smaller than H2O

Equal to H2O

None of these

24 / 100

Category: Chemistry Ch 16 Class 12

Function of ozone Is?

To filter UV radiations

Act as a reducing agent

Act as an antibiotic

None of these

25 / 100

Category: Chemistry Ch 3 Class 12

Borax bead test is used to separate:

) Metallic cations

Non-metallic cations

Metallic anions

Non-metallic anions

26 / 100

Category: Chemistry Ch 5 Class 12

is used in electric light bulbs, in fluorescent tubes, in radio tubes and Geiger counters

Radon

Neon

Argon

Both a and b

27 / 100

Category: Chemistry Ch 12 Class 12

Ketone can be prepared by the oxidation of:

Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

28 / 100

Category: Chemistry Ch 15 Class 12

Which one of the following was used as one of the earliest antiseptic and disinfectants?

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

A) Phenol

B) Ether

C) Ethanol

D) Methanol

29 / 100

Category: Chemistry Ch 13 Class 12

To get the carboxylic acid containing C atoms less than C atoms in parent aldehyde we do hydrolysis of:

Cyanohydrins

Amino Acids

Esters

Amides

30 / 100

Category: Chemistry Ch 10 Class 12

R-X on reaction with alcohols form:

PMC 2020
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) R-OH

B) ROR

C) R-X-OH

D) RH

31 / 100

Category: Chemistry Ch 6 Class 11

The Lattice energy is also called as:

PMC 2020
Chemistry
Chemical Bonding
Elimination Tool:

A) Energy of affinity

B) Bond energy

C) Crystal energy

D) Potential energy

32 / 100

Category: Chemistry Ch 5 Class 11

J.J Thomson determined the:

NTS 2016 DUHS & JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) Charge of an electron

B) Mass of an electron

C) e/m value of an electron

D) Charge of a proton

33 / 100

Category: Chemistry

Which of the following is locating agent?

NUMS Mock 1
Chemistry
Analytical Chemistry

A) H2S

B) CS2

C) Rubeanic acid

D) Ninhydrin

34 / 100

Category: Chemistry Ch 12 Class 12

Paraldehyde is formed by:

Formaldehyde

Acetaldehyde

Acetone

None of these

35 / 100

Category: Chemistry Ch 1 Class 12

11) Hydrogen has properties similar to:

Alkali metals

Halogens

Both a and b

None of these

36 / 100

Category: Chemistry Ch 6 Class 11

Paramagnetism is due to:

Unpaired electron

Complete valence shell

Paired electron

Ionization

37 / 100

Category: Chemistry Ch 7 Class 12

Which of the following intermediate has the complete octet around the carbon atom.

NUMS 2018
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Free radical

B) Carbanion

C) Carbonium ion

D) None of these

38 / 100

Category: Chemistry Ch 14 Class 12

Which of the following element is not usually present in all proteins?

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

A) Carbon

B) Hydrogen

C) Nitrogen

D) Sulphur

39 / 100

Category: Chemistry Ch 16 Class 12

Which of the following causes suffocation?

S02

CO2

Fog

All of these

40 / 100

Category: Chemistry Ch 14 Class 12

Which one of the following is the structure of Teflon?

UHS 2018
Chemistry
Alkyl Halides and Amines
Macromolecules
Elimination Tool:

A) (-CF2-CF2-)n

B) (-CF2-CCl2-)n

C) (-CH2-CH2-)n

D) (-CF2-CH2-)n

41 / 100

Category: Chemistry Ch 1 Class 11

Glucose(C6H12O6) is the most important nutrient in a cell for generating chemical potential energy, what is the mass percent of carbon in 1.5g of sample?

PMC Practice 24
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 33%

B) 40%

C) 53.3%

D) 6.67%

42 / 100

Category: Chemistry Ch 10 Class 12

When Grignard reagent reacts with 1120, which of the following is formed

Parent alkane

Alkyl halide c

Alcohol

All are possible

43 / 100

Category: Chemistry Ch 8 Class 11

Buffer solution is a solution which resists change in?

pH

Concentration

Number of moles

Rate of reaction

44 / 100

Category: Chemistry

Q.73 The unit used to express the relative atomic mass is called

A. Gram unit

B. Avogadro's number

C. Atomic mass

D. Atomic mass unit

45 / 100

Category: Chemistry Ch 12 Class 12

Methyl Magnesium Bromide reacts with formaldehyde. The product will be:

Methyl Alcohol

Acetone

Ethyl Alcohol

Ethane

46 / 100

Category: Chemistry Ch 6 Class 11

Dipole moment of H2 is:

1.03

) 1.45

0.78

0

47 / 100

Category: Chemistry

Q.36 How will the conditions be changed to prevent the volume of the given gas from expanding when its mass is increased

A. Temperature and pressure increased

B. Temperature is lowered and pressure decreased

C. Temperature and pressure increasediiiiiiiiii

D. Temperature is lowered and pressure increased

48 / 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

49 / 100

Category: Chemistry

Example of nucleophile is:

NUMS Mock 3
Chemistry
Fundamental Principles of Organic Chemistry

A) BF3

B) SO3

C) AlCl3

D) CN

50 / 100

Category: Chemistry Ch 4 Class 11

Boyle’s law is stated as:”The product of pressure and volume of a fixed amount of gas at constant temperature is a _____ quantity

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

A) variable

B) constant

C) discreet

D) decreasing

51 / 100

Category: Chemistry

The potential difference of an electrochemical cell is measured by:

NUMS Mock 2
Chemistry
Electrochemistry

A) Ammeter

B) Voltmeter

C) Galvanometer

D) Calorimeter

52 / 100

Category: Chemistry

The valency of an atom will be one if there is a sufficient gap between first and second ____.

NUMS Mock 1
Chemistry
Chemical Bonding

A) Electron affinity

B) Ionization energy

C) Electronegativity

D) None of these options are correct

53 / 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

54 / 100

Category: Chemistry Ch 15 Class 12

“Zymase”- a group of 14 enzymes, used in the fermentation of starch, is present in:

NTS 2010
Chemistry
Chemistry of Life
Elimination Tool:

A) Bacteria

B) Yeast

C) Fungi

D) Algae

55 / 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

56 / 100

Category: Chemistry Ch 5 Class 11

Which quantum number decides energy of orbitals?

Magnetic quantum number

Principal quantum number

Azimuthal quantum number

All of these

57 / 100

Category: Chemistry Ch 4 Class 11

Which of the following properties does not belong to Gases?

PMC Practice 5
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) Indefinite volume

B) Indefinite shape

C) Low density

D) Strong interactions

58 / 100

Category: Chemistry Ch 14 Class 12

Bakelite is a polymer of formaldehyde and __________.

NUMS 2018
Chemistry
Macromolecules
Elimination Tool:

A) Phenol

B) Ethanol

C) Butanol

D) Methanol

59 / 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

60 / 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

61 / 100

Category: Chemistry Ch 8 Class 12

Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?

PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Structural isomerism

B) Functional isomerism

C) Chain isomerism

D) Metamerism

62 / 100

Category: Chemistry Ch 16 Class 12

NO2 in atmosphere absorbs moisture to form?

HNO3

HNO2

NO

Both a and b

63 / 100

Category: Chemistry

Q.93 Which element has electronic configuration of [Ar]4s1, 3d5

A. Cu

B. Zn

C. Cr

D. V

64 / 100

Category: Chemistry Ch 3 Class 11

Pressure remaining constant, at which temperature volume of gas will become twice to the volume at 0 C?

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

A) 546 C

B) 200 C

C) 546 K

D) 273 K

65 / 100

Category: Chemistry Ch 15 Class 12

The crude petroleum is separated in fraction by:

PMC Practice 4
Chemistry
Industrial Chemistry
Elimination Tool:

A) Filtration

B) Fractional distillation

C) Steam distillation

D) Fractional sublimation

66 / 100

Category: Chemistry

Q.93 The ionizatior energy of group _____________shows abnormal trend

A. 3A & 4A

B. SA &6A

C. 6A & 4A

D. 3A & 6A

67 / 100

Category: Chemistry

Which of the following molecules has the largest number of shared pairs of electrons?

NUMS Mock 4
Chemistry
Chemical Bonding

A) C2H4

B) N2

C) CO2

D) NH3

68 / 100

Category: Chemistry Ch 7 Class 11

When two moles of H2 and one mole of O2 react to form H2O, 484 KJ heat is evolved. What is Δ Hf for one mole of H2O?

NUMS 2019 Reconduct
Chemistry
Thermochemistry
Elimination Tool:

A) -484 KJmol-1

B) -242 KJmol-1

C) -121 KJmol-1

D) +242 KJmol-1

69 / 100

Category: Chemistry

Q.123 Protein present in hides of animals is precipitated by

A. Tannic acid

B. Stearic acid

C. Oxalic acid

D. Acetic acid

70 / 100

Category: Chemistry Ch 7 Class 12

C6H5C≡N and C6H5N≡C exhibits which type of isomerism:

NTS 2015 SMBBMC
Biology
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Functional group isomerism

B) Positional isomerism

C) Skeletal isomerism

D) Metamerism

71 / 100

Category: Chemistry Ch 12 Class 12

– ROR is the nucleophile of

NTS 2011
Chemistry
Aldehydes and Ketones
Elimination Tool:

A) Alcohols

B) Esters

C) Cyanides

D) Ethers

72 / 100

Category: Chemistry

The substance which conducts electricity by the movement of ions:

NUMS Mock 3
Chemistry
Chemical Bonding

A) Graphite

B) Copper

C) Molten NaCl

D) Mercury

73 / 100

Category: Chemistry

Q.101 The maximum charge to mass ratio for those canal rays when ______ gas is used in discharge tube

A. He

B. H2

C. O2

D. N2

74 / 100

Category: Chemistry Ch 9 Class 11

From a mixture of CO2and H2gases, CO2can be separated by passing the mixture through:

NTS 2013
Chemistry
Solution and Colloids
Elimination Tool:

A) Water at high temperature

B) Water under high pressure

C) Cold water

D) Acidified water

75 / 100

Category: Chemistry Ch 4 Class 11

Which of the following compound has the highest boiling point?

Water

HCL

Ammonia

HF

76 / 100

Category: Chemistry

Q.112 Which of the following alkyl halides undergoes SN1 reaction fastest?

A. methyl chloride

B. Isobutyl chloride

C. Tertiary butyl chloride

D. Ethyl chloride

77 / 100

Category: Chemistry Ch 9 Class 12

Activation of the benzene ring in aniline can be decreased by treating with:

NUMS 2017
Chemistry
Hydrocarbons
Elimination Tool:

A) Dil HCL

B) Ethyl alcohol

C) Acetic acid

D) Acetyl chloride

78 / 100

Category: Chemistry

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

NUMS Mock 1
Chemistry
Aldehydes and Ketones

A) LiAlH4

B) Zn(Hg)-HCl

C) NaBH4

D) CH3MgI

79 / 100

Category: Chemistry

Q.72 4 mole of NO and 0.9mole of CO2 are mixed initially according to equation At equilibrium, 0.1 mol of CO2 is present. The value of Kc is

A. 0.2

B. 2.0

C. 5.0

D. 1.6

80 / 100

Category: Chemistry Ch 9 Class 11

Molarity is defined as the number of moles of any substance dissolved:

UHS 2011
Chemistry
Solution and Colloids
Elimination Tool:

A) Per dm3 of water

B) In one gram of water

C) Per m3 of water

D) In 100 ml of water

81 / 100

Category: Chemistry Ch 11 Class 12

Higher order alcohols

Have more than 1 carbon

have more than 3 carbons

Have more than 2 carbons

Have more than 4 carbons

82 / 100

Category: Chemistry Ch 10 Class 12

In alkyl halide, the halide ion has charge on it when attached to C-atom.

Positive

Negative

Partial positive

Partial negative

83 / 100

Category: Chemistry Ch 2 Class 12

The flame colour of Ca in flame test is:

NUMS 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) Orange red

B) Golden yellow

C) Red

D) Pink

84 / 100

Category: Chemistry Ch 13 Class 12

Which of the following is an example of Monocarboxylic acid?

PMC Sample 2
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Oxalic acid

B) Methanoic acid

C) Glutaric acid

D) Adipic acid

85 / 100

Category: Chemistry Ch 16 Class 12

Chloro-fluoro carbons cause

Radiations pollution

Water pollution

Air pollution

Soil pollution

86 / 100

Category: Chemistry

Q.155 In proteins the H bonding is present between

A.C-H

B. N-H

C.0-H

D. Cl-H

87 / 100

Category: Chemistry

Q.103 In phenol, the hydroxyl group is attached to

A. Phenyl group

B. Benzoyl group

C. Benzyl group

D. Benzal group

88 / 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

89 / 100

Category: Chemistry Ch 6 Class 11

The bonds present in N2O5 are:

NUMS 2015
Chemistry
Chemical Bonding
Elimination Tool:

A) Only ionic

B) Covalent and coordinate

C) Only covalent

D) Covalent and ionic

90 / 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

91 / 100

Category: Chemistry Ch 7 Class 11

Given the bond energy N ≡ N, N – H and H – H bonds are 945, 391, and 436 kJmol-1 respectively, the enthalpy of the reaction N2 (g) + 3H2(g) -> 2NH3 (g) is;

NUMS 2017
Chemistry
Thermochemistry
Elimination Tool:

A) -93 kJ

B) 102 kJ

C) 90 kJ

D) 105 kJ.

92 / 100

Category: Chemistry Ch 9 Class 12

Stability of benzene is due to

Alternate double bonds

Electrons' cloud

Double bonds

Delocalization of electrons

93 / 100

Category: Chemistry Ch 6 Class 12

Which of the following doesn’t has an incomplete d-orbital?

Ag

Au

Cu

All of these

94 / 100

Category: Chemistry Ch 16 Class 12

Ozone Is

02

03

04

ps

95 / 100

Category: Chemistry Ch 4 Class 11

The formula of Chile Saltpeter is?

PMC Practice 5
Chemistry
States of Matter – Gases, Liquids and Solids
Elimination Tool:

A) NaNO3

B) CaCO3

C) Ba(NO3)2

D) NH4Cl

96 / 100

Category: Chemistry Ch 6 Class 11

Which pair has species with different shapes?

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) BeCl2 and CO2

B) NH3 and BF3

C) SCl2 and H2O

D) CH4 and NH4+

97 / 100

Category: Chemistry Ch 15 Class 12

In the atmosphere, CO2 is about:

FMDC 2018
Chemistry
Environmental Chemistry
Elimination Tool:

A) 0.01％

B) 0.03％

C) 0.05％

D) 0.09％

98 / 100

Category: Chemistry Ch 16 Class 12

Which one is correct about Incineration of Industrial waste?

Ash buried in sea water.

Secondary chamber is maintained at temperature range 650 C to 1100 C

Smoke stacks emit oxides of nitrogen and carbo

Solids wastes are the significant sources of dioxins

99 / 100

Category: Chemistry

Which of the following compounds is solid at room temperature?

NUMS Mock 2
Chemistry
Alcohols, Phenols and Ethers

A) Ethanol

B) Butane

C) Methanol

D) Phenol

100 / 100

Category: Chemistry Ch 13 Class 12

Which one will act as a strong acid?

UHS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Chloroethanoic acid

B) Ethanoic acid

C) Trichloroethanoic acid

D) Dichloroethanoic acid

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