Chemistry Practice Tests 1

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Chemistry Practice Test 1

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1 / 100

Category: Chemistry Ch 2 Class 11

In a vessel, 10 g N2, 10 g H2 and 10g O2 are present. Which one will have least number of atoms?

PMC 2020
Chemistry
Stoichiometry
Elimination Tool:

A) H2

B) N2

C) O2

D) Both H2 and N2

2 / 100

Category: Chemistry Ch 14 Class 12

The melting point of NaCl is very high, 801°C. It is reduced to 600°C by the addition of _______ in Down’s process.

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

A) Calcium chloride

B) Magnesium chloride

C) Aluminium chloride

D) Potassium chloride

3 / 100

Category: Chemistry Ch 5 Class 11

An element has configuration 2, 8, 1. It belongs to, ______.

NTS 2016 SMBBMC
Chemistry
Atomic Structure
Elimination Tool:

A) IA group and 3rd period

B) IIIA group and 1st period

C) IA group and 8th period

D) VIIA group and 3rd period

4 / 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

5 / 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

6 / 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

7 / 100

Category: Chemistry Ch 11 Class 12

Which of the following process is not use for the preparation of alcohol?

Reaction of alkyl halide with Grignard reagent

Hydration of alkene

Reaction of Grignard reagent from aldehyde

From water gas

8 / 100

Category: Chemistry Ch 4 Class 12

Paramagnetic elements contain:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) All paired electrons

B) All unpaired electrons

C) Few unpaired electrons.

D) Unequal electrons and protons

9 / 100

Category: Chemistry Ch 1 Class 11

One mole of Oxygen has number of atoms as compared to one mole of Nitrogen

equal

Half

Double

Quarter

10 / 100

Category: Chemistry Ch 7 Class 12

Which of the following is not an isomer of other three:

2,2-Dimethyl pentane

2-Methylhexane

2,3- Dimethyl pentane

2,2- Dimethyl butane

11 / 100

Category: Chemistry Ch 6 Class 11

Silicon is found in nature in form of:

NUMS 2014
Chemistry
Chemical Bonding
Elimination Tool:

A) Isolated or free silicon

B) Sulphides

C) Silica or silicates

D) Only silicates

12 / 100

Category: Chemistry Ch 11 Class 12

The alkenes can be formed by alcohols in the presence of

PMC Sample 3
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) acidified KMnO4

B) acidified K2Cr2O7

C) acidified Cucl2

D) pyridine

13 / 100

Category: Chemistry Ch 7 Class 11

The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps. This is known as:

NTS 2019
Chemistry
Thermochemistry
Elimination Tool:

A) Henry's law

B) Hess's law.

C) Joule's principle

D) Dalton's law

14 / 100

Category: Chemistry Ch 11 Class 12

By fermentation process of starch and by the catalytic enzyme, ______ is produced.

NUMS 2018
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Methyl alcohol

B) Ethyl alcohol

C) Acetyl alcohol

D) Methanal

15 / 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

16 / 100

Category: Chemistry Ch 8 Class 11

Consider the following reaction

N2(g) + O2(g) 2NO (g) Kc- 0.1 at 2000 C

If the original concentration of N2 and O2 were 0.1 M each. Calculate the concentrations of NO at equilibrium.

NTS 2016 DUHS & JSMU
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 0.028 M

B) 0.0012 M

C) 0.18 M

D) 0.0018 M

17 / 100

Category: Chemistry Ch 16 Class 12

Chloro-fluoro carbons cause

Radiations pollution

Water pollution

Air pollution

Soil pollution

18 / 100

Category: Chemistry Ch 15 Class 12

Enzymes that are functioning within the cell are called:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

A) Endoenzymes

B) Exoenzymes

C) Holoenzymes

D) Both A & C

19 / 100

Category: Chemistry Ch 8 Class 11

Which of the following reaction has greater Kp than Kc?

PMC 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) 2NO + Cl2 2NOCl

B) 2SO2 + O2 2SO3

C) 2NOCl 2NO + Cl2

D) N2 + 3H2 2NH3

20 / 100

Category: Chemistry Ch 6 Class 11

H2S is an example of ______ hydride.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

A) Ionic

B) Covalent

C) Complex

D) Metallic

21 / 100

Category: Chemistry Ch 11 Class 11

The rate of chemical reaction:

PMC Sample 2
Chemistry
Reaction Kinetics
Elimination Tool:

A) Increases as the reaction proceeds

B) Decrease as the reaction proceeds

C) May increase or decrease during the reaction

D) Remains constant as the reaction proceeds

22 / 100

Category: Chemistry Ch 9 Class 11

In depression of freezing point, freezing constant Is divided by

Molarity

Molality

Molar fraction

All of these

23 / 100

Category: Chemistry Ch 16 Class 12

Which one substance is used to remove both H2S and carbon dioxide from biogas?

Sodium oxide

Calcium oxide

Both a and b

None of the above

24 / 100

Category: Chemistry

Q.104 The maximum number of electrons accommodated in a shell or energy level is calculated by formula

A.n^2

B. 2n^2

C. 2n

D.3n

25 / 100

Category: Chemistry Ch 15 Class 12

The zone where moisture is removed and clay is broken down into Al203, Si02, Fe203 is

Burning zone

Cooling zone

Drying zone

Decomposition zone

26 / 100

Category: Chemistry Ch 5 Class 11

) The velocity of electron in outermost shell Is?

Minimum

Maximum

Intermediate

None of these

27 / 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+

28 / 100

Category: Chemistry Ch 15 Class 12

Which of the following is the most widely used fertilizer in Pakistan?

Ammonium Nitrate

Ammonia

Calcium Nitrate

Urea

29 / 100

Category: Chemistry Ch 3 Class 12

Which element among the following forms a protective oxide coating on exposure to air?

Nitrogen

Aluminium

Boron

30 / 100

Category: Chemistry Ch 1 Class 11

In mass spectrometry, ionization occurs in form.

Solid

Liquid

Vapor

No ionization occurs during the process.

31 / 100

Category: Chemistry

Q87 : Octet rule is followed by the central atom of _________ molecule

A. BF3

B. S02

C. SF5

D. CCl4

32 / 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

33 / 100

Category: Chemistry

Which type of reaction takes place when a carbonyl compound is treated with a mixture of NaCN and an acid?

NUMS Mock 3
Chemistry
Aldehydes and Ketones

A) Electrophilic addition reaction

B) Substitution reaction

C) Nucleophilic addition reaction

D) Displacement reaction

34 / 100

Category: Chemistry Ch 4 Class 12

Ligands having two lone pair of electrons for donation to the central transition metal ion are known as:

UHS 2018
Chemistry
d and f Block Elements
Elimination Tool:

A) Polydentate ligands

B) Monodentate ligand

C) Bidentate ligands

D) Hexadentate ligands

35 / 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

36 / 100

Category: Chemistry Ch 10 Class 12

RMgX is an organometallic compound, generally known as:

NTS 2012
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Grignard's Reagent

B) Baeyer's Reagent

C) Ether

D) Ester

37 / 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

38 / 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

39 / 100

Category: Chemistry Ch 9 Class 12

How many chain isomers of Pentane is possible?

PMC Practice 1
Chemistry
Hydrocarbons
Elimination Tool:

A) Two

B) Four

C) Three

D) Five

40 / 100

Category: Chemistry Ch 4 Class 11

Which one Is not possible a)

Ionic crystal

Covalent crystal

Metallic crystal

Atomic-crystal

41 / 100

Category: Chemistry Ch 10 Class 11

which one of the following Is the oxidation number of Iodine in I2?

0

1

2

None

42 / 100

Category: Chemistry Ch 2 Class 11

How will you separate water and kerosene oil?

Distillation

Filtration

Sublimation

Crystallization

43 / 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

44 / 100

Category: Chemistry Ch 13 Class 12

Vinegar is basically acid:

Acetic

Citrus

Formic

Butyric

45 / 100

Category: Chemistry Ch 6 Class 11

Ionic, covalent and co-ordinate covalent bonds are simultaneously present in the molecular geometry of:

NTS 2017
Chemistry
Chemical Bonding
Elimination Tool:

A) Ammonia

B) Ammonium hydroxide

C) Hydrochloric acid

D) Water

46 / 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)

47 / 100

Category: Chemistry Ch 9 Class 12

Name the main product formed as a result of the following reaction

H3C – (CH2)5 – CH3 ————> Product

n-heptane

Conditions: 480 – 550 C, 150 – 399 psi V2O5

NTS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) Benzene

B) Toluene

C) Xylene

D) Cyclohexane

48 / 100

Category: Chemistry Ch 14 Class 12

Activator of phosphatase enzyme is _________.

PMC Practice 3
Chemistry
Macromolecules
Elimination Tool:

A) Mn2+

B) Mg2+

C) Zn2+

D) None of these options is correct

49 / 100

Category: Chemistry

Q.120 Which of the following has six isotopes

A. Palladium

B Tin

C. Cadmium

D. Carbon

50 / 100

Category: Chemistry Ch 8 Class 11

For an equilibrium change involving gaseous phase, the forward reaction is first order while the reverse reaction is second order. The unit of Kp for the forward equilibrium is:

NTS 2019
Chemistry
Chemical Equilibrium
Elimination Tool:

A) atm

B) atm2

C) atm-1

D) atm-2

51 / 100

Category: Chemistry Ch 14 Class 12

Teflon contains which of the following halide?

Chlorine

Bromine

Fluorine

All of these

52 / 100

Category: Chemistry Ch 8 Class 12

Boiling point of heptane is:

140

160

200

98

53 / 100

Category: Chemistry Ch 11 Class 12

Which of following has “higher boiling”and “melting point”?

PreMedPK MDCAT Mock 5
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Acetone

B) 2 – Butanol

C) Propane

D) 2 – Methylpropene

54 / 100

Category: Chemistry Ch 1 Class 11

4 gram atoms of carbon has a mass of:

12

24

48

56

55 / 100

Category: Chemistry Ch 2 Class 12

Which of the following is the correct order of electronegativity (from highest to lowest)?

NTS 2015 SMBBMC
Biology
s and p Block Elements
Chemical Bonding
Elimination Tool:

A) F , O, N , C

B) N, F , O, C

C) C, F, N, O

D) C, F, O, N

56 / 100

Category: Chemistry Ch 11 Class 11

Sum of all the exponents of the molar concentration of the reactant present in the rate equation is known as:

NTS 2012
Chemistry
Reaction Kinetics
Elimination Tool:

A) Molecularity

B) Order of reaction

C) Rate of reaction

D) gradient

57 / 100

Category: Chemistry Ch 15 Class 12

1 calorie = ______ Joules.

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

A) 200 Joules

B) 2000 Joules

C) 4.184 Joules

D) 4180 Joules

58 / 100

Category: Chemistry

Q.180 Enzymes speed up the reaction upto

A. 10^10

B. 200^10

C.10^20

D.150^10

59 / 100

Category: Chemistry Ch 1 Class 12

Variable valency is shown by which of the following elements?

Na

Co

Mg

AI

60 / 100

Category: Chemistry Ch 6 Class 11

sp3 hybridization in CH4 gives it ______ geometry.

NTS 2012
Chemistry
Chemical Bonding
Elimination Tool:

A) linear

B) coplanar

C) tetrahedral

D) octahedral

61 / 100

Category: Chemistry Ch 7 Class 11

Heat evolved or absorbed in a chemical reaction does not depend upon?

NTS 2016 SMBBMC
Chemistry
Thermochemistry
Elimination Tool:

A) Amount of reactants

B) Pressure of reaction

C) Physical state of reactants and products

D) Temperature

62 / 100

Category: Chemistry

Q.147 Plasma “the fourth state of matter was identified by

A. Berzelius

B. William Crooks

C. Dalton

D. Rutherford

63 / 100

Category: Chemistry Ch 10 Class 11

Standard Electrode Potential is measured at temperature:

348K

298K

20K

235K

64 / 100

Category: Chemistry

“The sum of all the exponents to which the molar concentration in terms in the rate equation are raised” defines:

NUMS Mock 2
Chemistry
Reaction Kinetics

A) Rate of reaction

B) Order of reaction

C) Type of reaction

D) Product of reaction

65 / 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

66 / 100

Category: Chemistry Ch 8 Class 12

In which of the following C-C bond length is the minimum?

Alkane

Alkene

Benzene

Same length in all

67 / 100

Category: Chemistry Ch 1 Class 12

Ionic radius in period from left to right:

NUMS 2014
Chemistry
Periodicity in Elements
Elimination Tool:

A) Decreases

B) Increases

C) I st increase and then decrease

D) I st decrease and then increase

68 / 100

Category: Chemistry Ch 4 Class 12

d-block elements are present _____________ in the periodic table ?

PMC Sample 3
Chemistry
d and f Block Elements
Elimination Tool:

A) Right of the periodic table

B) Left of the periodic table

C) Bottom of periodic table

D) Between s and p block elements

69 / 100

Category: Chemistry

Q.119 Caustic Soda is made by electrolysis of concentrated solution of NaCI in

A. Nelson's Cell

B. Hg-Cell

C. Castner Kellner Cell

D. All of these

70 / 100

Category: Chemistry

The value of surface tension of isopropyl alcohol is?

NUMS Mock 2
Chemistry
Chemical Bonding

A) Less than water

B) Less than ethylene glycol

C) less than methyl alcohol

D) same as ethyl alcohol

71 / 100

Category: Chemistry

Q.76 Which of the following methods .used to prepare acetic acid?

A. Distillation

B. Fermentation

C. Dehydration

D. Ozon lysis

72 / 100

Category: Chemistry Ch 8 Class 11

Precipitation occurs when the product of ionic concentrations is:

NUMS 2019 Reconduct
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Greater than Ksp

B) Less than Ksp

C) Equal to Ksp

D) Equal to unity

73 / 100

Category: Chemistry Ch 1 Class 11

Solution contains 85.5 g of sucrose (C12H22O11) in 250 cm3. What is its molarity?

UHS 2019
Chemistry
Introduction to Fundamental Concepts of Chemistry
Elimination Tool:

A) 1 M

B) 0.5 M

C) 0.25 M

D) 2 M

74 / 100

Category: Chemistry

If a molecule MX3 has zero dipole moment, the sigma bonding orbitals used by M are:

NUMS Mock 4
Chemistry
Chemical Bonding

A) Pure p

B) Sp hybrids

C) Sp2hybrids

D) Sp3hybrids

75 / 100

Category: Chemistry Ch 1 Class 12

Hydrogen resembles the elements of groups:

NTS 2019
Chemistry
Periodicity in Elements
Elimination Tool:

A) I-A, V-A and VIll-A

B) I-A, IV A and Vl-A

C) I-A, II-A and VIl-A

D) I-A, IV-A and VIl-A

76 / 100

Category: Chemistry Ch 9 Class 11

Percentage of weight of NaCI if 2g NaCI is dissolved in 18g water

10

20

30

40

77 / 100

Category: Chemistry

Which of the following shows the Planck’s quantum theory?

NUMS Mock 3
Chemistry
Atomic Structure

A) E = hcv

B) E = c/v

C) E = cv

D) None of these options are correct

78 / 100

Category: Chemistry Ch 15 Class 12

The macronutrients for healthy plant growth are required in per acre.

5g — 200 g

5kg — 200 kg

5g — 2000kg

None of these

79 / 100

Category: Chemistry

Q.146 a liquid crystalline state exist between two temperatures I-e melting temperature and temperature

A. Boiling

B. Freezing

C. Clearing

D. All of these

80 / 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

81 / 100

Category: Chemistry Ch 7 Class 11

If pressure and volume of a gas are variable while temperature remains constant, this belongs to

PMC Sample 2
Chemistry
Thermochemistry
Elimination Tool:

A) Charles's law

B) Boyle's law

C) Avogadro's law

D) Pascal's law

82 / 100

Category: Chemistry Ch 2 Class 12

Sodium Is prepared by

Down's cell

Dutch's method

Castner-kellner process

Nelson's process

83 / 100

Category: Chemistry Ch 1 Class 11

What will be the mass in grams of 12 gram atom of carbon atoms?

12.66 x 10^-24

1.66 x 10^-24

1.992 x 10^-23

2.660 x 10^-23

84 / 100

Category: Chemistry Ch 10 Class 12

Which gases are produced when alcohol reacts with thionyl chloride?

PMC Sample 1
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Sulphuric acid and carbon dioxide

B) Sulphur dioxide and hydrogen chloride

C) Sulphur chloride and hydrogen dioxide

D) Sulphuric acid and hydrogen chloride

85 / 100

Category: Chemistry

Transfer of heat from hot surroundings to a cold refrigerator is an example of:

NUMS Mock 4
Chemistry
Thermochemistry

A) Spontaneous reaction

B) Non-Spontaneous reaction

C) First law of thermodynamics

D) All of the above options are correct

86 / 100

Category: Chemistry Ch 6 Class 12

Acidified K2Cr2O7 is also called:

Ceramic acid

Chromic Acid

Dichromate

None of these

87 / 100

Category: Chemistry Ch 2 Class 12

Metals belonging to the same group in the periodic table are

NUMS 2014
Chemistry
s and p Block Elements
Elimination Tool:

A) Magnesium and Na

B) Magnesium and Copper

C) Magnesium and Barium

D) Magnesium and Potassium

88 / 100

Category: Chemistry Ch 15 Class 12

What is used in cement manufacture?

Limestone

Starch

Potassium Oxide

Both a and b

89 / 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

90 / 100

Category: Chemistry Ch 4 Class 12

The chemical name of K2[Zn(OH)4] is:

NTS 2019
Chemistry
d and f Block Elements
Elimination Tool:

A) Potassium tetrahydroxyzinc (II)

B) Potassium tetrahydroxozincate (II)

C) Potassium tetrahydroxyzincate (VI)

D) Potassium hydroxyzinc (II)

91 / 100

Category: Chemistry Ch 16 Class 12

Global scale SO2 is produced by

Combustion

Fossil fuels

Volcano

None of these

92 / 100

Category: Chemistry Ch 14 Class 12

Graphite has a structural similarity with:

PMC Practice 2
Chemistry
Macromolecules
Elimination Tool:

A) B2H6

B) B4C

C) B

D) BN

93 / 100

Category: Chemistry Ch 9 Class 11

6 g of urea is dissolved in 90 g of water. The relative lowering of vapour pressure is:

NUMS 2015
Chemistry
Solution and Colloids
Elimination Tool:

A) 0.02

B) 0.2

C) 0.002

D) 0.04

94 / 100

Category: Chemistry Ch 9 Class 11

12% W/W alcohol In water solution contains water:

100 cm3

12 cm3

88 cm3

112 cm3

95 / 100

Category: Chemistry

Q.128 Which of the following element is not usually present in all proteins?

A. Carbon

B. Hydrogen

C. Nitrogen

D. Sulphur

96 / 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

97 / 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.

98 / 100

Category: Chemistry Ch 7 Class 12

Propyl Acetate and valeric acid are which type of isomers

NUMS 2018
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Tautomers

B) Functional

C) Position

D) Metamers

99 / 100

Category: Chemistry Ch 7 Class 12

Which functional group is not a double bond?

NUMS 2019 Cancelled
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Ethers

B) Aldehydes

C) Ketones

D) Esters

100 / 100

Category: Chemistry Ch 13 Class 12

In esterification, alcohol reacts with:

Acetaldellye

Halogens

Carboxylic acid

None

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