Chemistry Practice Tests 3

Created by Ali Durrani

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Chemistry Practice Test 3

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1 / 100

Category: Chemistry Ch 11 Class 11

Which of the following acids is used for Etching glass?

NTS 2011
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) Hydrochloric Acid

B) Nitric Acid

C) Hydrofluoric Acid

D) Sulphuric Acid

2 / 100

Category: Chemistry Ch 12 Class 12

Which one of the following is used in making lozenges?

Methanol

Acetaldehyde

Acetone

Formaldehyde

3 / 100

Category: Chemistry Ch 7 Class 12

In alkanes, each carbon has hybridization:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) sp3

B) sp

C) sp2

D) dsp

4 / 100

Category: Chemistry Ch 5 Class 11

The lightest positive rays obtained is from:

NUMS 2020
Chemistry
Atomic Structure
Elimination Tool:

A) Hydrogen gas

B) Helium

C) Neon

D) Air

5 / 100

Category: Chemistry Ch 12 Class 12

Ketones and aldehydes are reduced in the presence of catalyst:

Pd

Al203

R-Mg-X

SOCl2

6 / 100

Category: Chemistry Ch 15 Class 12

Among the most common disaccharides, one of the following is present in the milk?

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool:

A) Sucrose

B) Maltose

C) Fructose

D) Lactose

7 / 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

8 / 100

Category: Chemistry Ch 12 Class 12

Oxidation of alcohol converts it into?

Aldehyde

Tertiary Alcohol

Alkane

Carboxylic Acid

9 / 100

Category: Chemistry

Which one of the following is used as an anesthetic?

Acetone

Halothane

Methyl alcohol

Ethyl alcohol

10 / 100

Category: Chemistry Ch 13 Class 12

Reagent used to reduce a carboxylic acid to an alkane is:

NUMS 2019 Reconduct
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Ni / H2

B) NaBH4

C) P / HI

D) LiAlH4

11 / 100

Category: Chemistry Ch 1 Class 12

Which orbitals take part in binding of transition elements

PMC Sample 1
Chemistry
Periodicity in Elements
Elimination Tool:

A) Outermost s orbital and p orbitals

B) Outermost d orbital and underlying half filled f-orbitals

C) Outermost p orbital and underlying half filled d-orbitals

D) Outermost s orbital and underlying half filled d-orbitals

12 / 100

Category: Chemistry Ch 8 Class 12

What Is Lindlar Catalyst?

fe203 and Al2O3

AL1O1,SIO2, Cr2O3

Pd, CaCO, and Lead salts

Charcoal

13 / 100

Category: Chemistry Ch 15 Class 12

The gas which is mainly produced in landfills from the waste is:

UHS 2016
Chemistry
Environmental Chemistry
Elimination Tool:

A) CH4

B) CO2

C) SO2

D) Cl2

14 / 100

Category: Chemistry Ch 6 Class 11

Which noble gas has highest ionization energy?

He

Ne

Ar

Kr

15 / 100

Category: Chemistry Ch 8 Class 11

In the reaction;

H2 + CO2 H2O + CO

The decrease in the concentration of reactants and products cause the equilibrium to shift:

NUMS 2020
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Towards left

B) Towards right

C) Nothing happens to the equilibrium

D) Equilibrium will shift towards both the directions

16 / 100

Category: Chemistry Ch 9 Class 12

The ratio of σ to π bonds in benzene is:

NUMS 2019 Reconduct
Chemistry
Hydrocarbons
Elimination Tool:

A) 4:1

B) 1:4

C) 1:3

D) 3:1

17 / 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

18 / 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

19 / 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

20 / 100

Category: Chemistry

Nitric oxide has how many valence electrons?

NUMS Mock 1
Chemistry
Atomic Structure

A) 10

B) 13

C) 11

D) 12

21 / 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

22 / 100

Category: Chemistry Ch 2 Class 12

Formula of Epsom salt is:

a

b

c

d

23 / 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

24 / 100

Category: Chemistry Ch 7 Class 11

Which one of the following equations correctly defines the enthalpy changes of formation of carbon monoxide:

NUMS 2018
Chemistry
Thermochemistry
Elimination Tool:

A) C(s) + 1/2 O2 -> CO(g)

B) C(g) + 1/2 O2-> CO(g)

C) C(s) + O(g)-> CO(g)

D) C(g) + CO2(g) -> 2CO(g)

25 / 100

Category: Chemistry

Q.116 Distillation of calcium acetate and calcium formate produces?

A. Formaldehyde

B. Acetaldehyde

C. Acetone

D. None of these

26 / 100

Category: Chemistry Ch 15 Class 12

Peroxyacetyl nitrate is an irritant to human beings and it effects:

UHS 2011
Chemistry
Environmental Chemistry
Elimination Tool:

A) Nose

B) Stomach

C) Ears

D) Eyes

27 / 100

Category: Chemistry Ch 10 Class 12

NH3 (amine) is an example of:

NTS 2015 DUHS and JSMU
Chemistry
Alkyl Halides and Amines
Elimination Tool:

A) Negative ligand

B) Anionic ligand

C) Neutral ligand

D) Organic ligand

28 / 100

Category: Chemistry Ch 7 Class 12

Which of the following pair groups belong to meta directing Groups?

NTS 2019
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) NH2 and -NO2

B) -OR and -OH

C) -NO2 and – SO3H

D) CI and -COOH

29 / 100

Category: Chemistry Ch 5 Class 11

Breaking of neutron produces?

Electron, proton and neutrino

Electron, positron and neutrino

Proton and positron

Alpha particles

30 / 100

Category: Chemistry Ch 8 Class 12

Molecular Formula of Propane is:

C3H8

C4H10

C6H12

C7H14

31 / 100

Category: Chemistry Ch 9 Class 12

Which type of hybridization takes place in benzene?

Sp3

Sp2

Sp

Sp2 and Sp3

32 / 100

Category: Chemistry Ch 7 Class 12

Formyl group is present in

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

A) Aldehydes

B) ethers

C) thiol

D) acetone

33 / 100

Category: Chemistry Ch 2 Class 12

The chemical name of the baking powder is:

NTS 2011
Chemistry
s and p Block Elements
Elimination Tool:

A) Sodium carbonate

B) Sodium bicarbonate

C) Sodium hydrogen carbonate

D) Sodium hydroxide

34 / 100

Category: Chemistry Ch 3 Class 11

How many balloons of capacity 0.25dm3 at 1atm pressure can be filled from a hydrogen gas cylinder of 5dm3 capacity at 10 atm?

NUMS 2015
Chemistry
States of Matter – Gases, Liquids and Solids
States of Matter
Elimination Tool:

A) 50

B) 90

C) 180

D) 200

35 / 100

Category: Chemistry

Q.102 In electrochemical series reduction potential relates to only

A. Real Conditions

B. Standard Conditions

C. Positive Values

D. Negative Values

36 / 100

Category: Chemistry Ch 4 Class 11

Which of the following is not a property of liquid?

Random movement of molecule

Molecules have the same position with respect to one another

Takes shape of the container

Are less common than solids and gases

37 / 100

Category: Chemistry

The spectrum of He is expected to be similar to that of:

NUMS Mock 4
Chemistry
Atomic Structure

A) Hydrogen

B) Sodium

C) Oxygen

D) Li+

38 / 100

Category: Chemistry Ch 2 Class 12

What is the chemical formula of Epsom Salt?

MgSO4.7H20

MgCO3

MgCO3.CaCO3

Mg(SiO3)4

39 / 100

Category: Chemistry Ch 10 Class 11

The process in which electric current is used to carry out a non-spontaneous redox reaction is called:

NTS 2017
Chemistry
Electrochemistry
Elimination Tool:

A) Electrolyte

B) Electrolysis

C) Metallic conductor

D) None of the above

40 / 100

Category: Chemistry

The color of transition metal complexes is due to transition of electrons between:

NUMS Mock 3
Chemistry
d and f Block Elements

A) p to d orbitals

B) d to d orbitals

C) p to p orbitals

D) d to p orbitals

41 / 100

Category: Chemistry Ch 7 Class 12

Which of the following is the reducing agent:

NUMS 2015
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) C3H8

B) C2H5COOH

C) C3H7OH

D) (CH3)2CO

42 / 100

Category: Chemistry Ch 8 Class 11

A solution has pH of 10. What is the value of [OH-]?

10^4

10^-4

10^6

10^-6

43 / 100

Category: Chemistry Ch 13 Class 12

HCOOH is the structure of:

NUMS 2018
Chemistry
Carboxylic Acids and its Derivatives
Elimination Tool:

A) Acetic acid

B) Formic acid

C) Valeric acid

D) Caproic acid

44 / 100

Category: Chemistry Ch 3 Class 12

Zinc reacts with dil. H2SO4 to give H2. It also reacts with conc. H2SO4 to form SO2. In these reactions.

NTS 2014
Chemistry
d and f Block Elements
Elimination Tool:

A) Zn reduces H+ to H2

B) Zn oxidizes H+ to H2

C) Zn reduces SO42-to SO2

D) Zn oxidises SO42- to SO2

E) Both A and C

45 / 100

Category: Chemistry Ch 6 Class 12

Number of unpaired electrons in ferrous ion is:

2

3

5

4

46 / 100

Category: Chemistry Ch 14 Class 12

A catalyst catalyzes reaction by:

Providing new path for reaction

) Increasing activation energy

Reacting with the reactants

Producing free Ions

47 / 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

48 / 100

Category: Chemistry Ch 14 Class 12

Proteins also contain _____ bonding.

PMC Practice 7
Chemistry
Macromolecules
Elimination Tool:

A) Covalent

B) Ionic

C) Hydrogen

D) Metallic

49 / 100

Category: Chemistry Ch 9 Class 12

Alkenes undergo:

UHS 2019
Chemistry
Hydrocarbons
Elimination Tool:

A) Electrophilic Addition

B) Electrophilic substitution

C) Nucleophilic substitution

D) Nucleophilic addition

50 / 100

Category: Chemistry Ch 11 Class 11

Half-life of an element is 5 days. If we have 50,000 of its atoms, then how many atoms would be left after 10 days?

15000

25000

50000

None of these

51 / 100

Category: Chemistry Ch 1 Class 11

In combustion analysis method CO2 is absorbed by?

Mg(OH)2

KOH

Mg(CIO)2

None of thes

52 / 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

53 / 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

54 / 100

Category: Chemistry Ch 5 Class 11

Which of the following best describes the emission spectrum of atomic hydrogen?

NTS 2015 DUHS and JSMU
Chemistry
Atomic Structure
Elimination Tool:

A) a discrete series of lines of equal intensity and equally spaced with respect to wavelength equally

B) a series of only four lines

C) a continuous emission of radiation of all frequencies

D) several discrete series of lines with both intensity and spacings between lines decreasing as the wavenumber increases with each series.

55 / 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

56 / 100

Category: Chemistry Ch 8 Class 12

The IUPAC name of the compound having structural formula CH3 — CH(OH) —COON is:

2-hydroxy propanoic acid

Lactic acid

a-hydroxy propanoic acid

Both a and b

57 / 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?

NTS 2013
Chemistry
Hydrocarbons
Elimination Tool:

A) Structural isomerism

B) Functional isomerism

C) Chain isomerism

D) Metamerism

58 / 100

Category: Chemistry Ch 11 Class 12

Which of the following esters give a Jasmine Flavour?

PreMedPK MDCAT Mock 2
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Ethyl Acetate

B) Octyl Acetate

C) Amyl Butyrate

D) Benzyl Acetate

59 / 100

Category: Chemistry Ch 11 Class 11

The unit of rate constant is same as that of rate of reaction in:

NUMS 2019 Reconduct
Chemistry
Reaction Kinetics
Elimination Tool:

A) First order reaction

B) Zero order reaction

C) Second order reaction

D) Third order reaction

60 / 100

Category: Chemistry

Q.86 Al powder heated in steam produces Al2O3 and

A. N2

B. H2

C. O2

D. Cl2

61 / 100

Category: Chemistry Ch 7 Class 12

Which of the following is/are organic?

Protein

Carbohydrates

Both a and b

None of these

62 / 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

63 / 100

Category: Chemistry Ch 4 Class 12

The shape of [Co(NH3)6]3+ complex is:

UHS 2018
Chemistry
d and f Block Elements
Elimination Tool:

A) Linear

B) Square planar

C) Tetrahedral

D) Octahedral

64 / 100

Category: Chemistry Ch 3 Class 12

Ability of carbon to form long chains and rings is known as?

Catenation

Supplementation

Adulteration

Addition

65 / 100

Category: Chemistry Ch 3 Class 12

) Aluminium is agent?

Good oxidizing

Weak reducing

Good reducing

Both oxidizing and reducing agent

66 / 100

Category: Chemistry Ch 9 Class 11

Which of the following has the highest electrical conductivity?

NUMS 2016
Chemistry
Solution and Colloids
Elimination Tool:

A) Aqueous sugar solution

B) Solid graphite

C) Solid sodium chloride

D) Gaseous carbon dioxide

67 / 100

Category: Chemistry Ch 4 Class 12

Which member of 5A group has no stable isotope?

Phosphorous

Bismuth

Nitrogen

Arsenic

68 / 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

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

Choose the correct statement:

NUMS Mock 3
Chemistry
States of Matter – Gases, Liquids and Solids

A) Diamond is the hardest and graphite is softest

B) Graphite is the hardest while lamp black is softest

C) Coal is the hardest and coke is softest

D) Diamond is the hardest and coke is softest

71 / 100

Category: Chemistry

All the collisions between the particles of gases are elastic in nature. What is meant by “Elastic Collisions”?

NUMS Mock 2
Chemistry
States of Matter – Gases, Liquids and Solids

A) No change in the total kinetic energy

B) The velocity of the molecules changes

C) No change in potential energy during the collisions

D) No change in mass during the collisions

72 / 100

Category: Chemistry Ch 15 Class 12

Which one of the following is an example of a condensation polymer?

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polyvinyl Chloride

B) Polystyrene

C) Polyethene

D) Polyamide

73 / 100

Category: Chemistry Ch 1 Class 12

Which group of elements shows greatest electrical conductivity?

Alkali metals

Alkaline earth metals

Halogens

Coinage Metals

74 / 100

Category: Chemistry Ch 9 Class 11

The temperature at which one crystalline form changes to other is called ___ temperature

PMC Sample 3
Chemistry
Solution and Colloids
Elimination Tool:

A) critical

B) absolute

C) transition

D) none of these

75 / 100

Category: Chemistry Ch 2 Class 12

Which of the following do not occur in Free State?

Li

Mg

Both

None of these

76 / 100

Category: Chemistry Ch 11 Class 11

The rate of a gaseous reaction Is given by K [A] [B]. If the volume of the vessel containing these gases is reduced to 1/4th of the initial volume, the rate of reaction relative to the original rate would be:

NUMS 2016
Chemistry
Reaction Kinetics
Elimination Tool:

A) 16/1

B) 1/16

C) 4/1

D) 1/8

77 / 100

Category: Chemistry Ch 2 Class 11

If we take 2.2 grams of CO2, 6.02 x 1021atoms of nitrogen. and 0.03-gram atoms of sulfur, then the molar ratio of C, N, and atoms will be:

NTS 2013
Chemistry
Stoichiometry
Elimination Tool:

A) 1:2:5

B) 5:1:2

C) 2:5:3

D) 5:1:3

78 / 100

Category: Chemistry Ch 6 Class 11

In HF the covalent bond is due to:

NTS 2016 SMBBMC
Chemistry
Chemical Bonding
Elimination Tool:

A) S-S overlapping

B) S-Pz overlapping

C) S-Px overlapping

D) Pz – Pz overlapping

79 / 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

80 / 100

Category: Chemistry

Q.1 The carbonyl compound which is attached with at least one H atom at one side is called as ?

A. Ketones

B. Aldehydes

C. Ethers

D. Alkyl halides

81 / 100

Category: Chemistry Ch 15 Class 12

cr. be used as a liquid fertilizer?

Ammonia

Potassium phosphate

Diammonium phosphate

urea

82 / 100

Category: Chemistry Ch 11 Class 11

H2SO4 has great affinity for water because:

NTS 2014
Chemistry
Acids, Bases and Salts
Elimination Tool:

A) It decomposes the acid

B) It hydrolyses the acid

C) Acid decomposes the water

D) Acid forms hydrates with water

83 / 100

Category: Chemistry

Q.79 Salt Bridge is used for the purpose of

A. Producing Electrons

B. Circuit Completion

C. Increasing speed electrons

D. All of these

84 / 100

Category: Chemistry Ch 14 Class 12

Which one of the following compounds is an additional polymer?

UHS 2019
Chemistry
Macromolecules
Elimination Tool:

A) Polyvinyl chloride

B) Nylon

C) Carbohydrate

D) Polyester

85 / 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

86 / 100

Category: Chemistry

The process of depositing a thin layer of expensive metals on ordinary or expensive metals is called:

NUMS Mock 2
Chemistry
Electrochemistry

A) Electroplating

B) Conductivity

C) Galvanizing

D) Metallurgy

87 / 100

Category: Chemistry

Q.96 Heat supplied at constant pressure equals to

A. Activation Energy

B. Internal energy change

C. Entropy

D. EnthalpyM

88 / 100

Category: Chemistry Ch 7 Class 12

The type of isomerism existing in a compound of molecular formula C2H6O is:

PMC 2020
Chemistry
Fundamental Principles of Organic Chemistry
Elimination Tool:

A) Functional group

B) Position

C) Chain

D) Metamerism

89 / 100

Category: Chemistry Ch 14 Class 12

The alloy Duralumin is composed of ______ of Al.

NTS 2018
Chemistry
Macromolecules
Elimination Tool:

A) 95%

B) 90%

C) 85%

D) 80%

90 / 100

Category: Chemistry Ch 2 Class 12

Magnesium reacts with nitrogen to form:

PMC 2020
Chemistry
s and p Block Elements
Elimination Tool:

A) Mg2N2

B) Mg3N2

C) MgN2

D) MgN

91 / 100

Category: Chemistry Ch 13 Class 12

Which one has fruity smell?

Alcohol

Ethers

Esters

Carboxylic Acids

92 / 100

Category: Chemistry Ch 10 Class 11

The oxidation number of all the elements in the free state is:

NTS 2012
Chemistry
Electrochemistry
Elimination Tool:

A) 1

B) 3

C) 0

D)-1

93 / 100

Category: Chemistry

Q.84 The electron affinity of fluorine is less than chlorine as we move down the group, this deviation in behavior is due to its

A. Small size

B. Seven electron

C. Thick electronic cloud

D. All of these

94 / 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

95 / 100

Category: Chemistry

Q.97 Which of the following liquid has boiling point greater than that of water at standard pressure

A. Acetic acid

B. Acetone

C. Ethanol

D. Benzene

96 / 100

Category: Chemistry Ch 11 Class 12

Which of the following is not a derivative of benzene?

PMC Practice 1
Chemistry
Alcohols, Phenols and Ethers
Elimination Tool:

A) Pyrrole

B) Furan

C) Thiophene

D) All

97 / 100

Category: Chemistry Ch 13 Class 12

Amino acid is usually known by a

Common name

IUPAC name

Both a and b

None of these

98 / 100

Category: Chemistry Ch 9 Class 12

Fuels with higher octane number can be produced by ___________.

PMC Practice 2
Chemistry
Hydrocarbons
Elimination Tool:

A) Cracking

B) Reforming

C) Decomposition

D) Isomerisation

99 / 100

Category: Chemistry Ch 8 Class 11

In the reaction, 2SO2 (g) + O2 ⇌ 2SO3 (g) ∆H= +X cal most favorable conditions of temperature and pressure for a greater yield of SO2 are:

NTS 2014
Chemistry
Chemical Equilibrium
Elimination Tool:

A) Low temperature and low pressure

B) High temperature and low pressure

C) High temperature and high pressure

D) Low temperature and high pressure

100 / 100

Category: Chemistry Ch 9 Class 12

Which of the following Is formula of Benzyl Alcohol?

C6H5CHO

C6H5CH202CC6H5

C6H5CH2OH

C5H5N

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