ECAT Pre Engineering Chemistry Chapter 19 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

Try The MCQ's Test For ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

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ECAT Chemistry Chapter 19 Aliphatic Hydrocarbons

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Question # 1

Alkenes combine readily with electrophillic reagents such as halogens giving

Question # 2

The addition of HBr is easiest with

Question # 3

Complete combustion of alkane yields

Question # 4

Formula of chloroform is

Question # 5

Hybridization of each carbon atom in benzene ring is

Question # 6

When benzene is burnt in free supply of air, it is completely oxidized to

Question # 7

Hydrogenation of alkenes/alkynes inthe presence of Ni as catalyst at 3000°C result in the formation of corresponding alkanes. This reaction is known as

Question # 8

Which class of compound is more reactive

Question # 9

The empirical formula of benzene is determined by

Question # 10

Benzene was discovered by Michael Faraday's in

Question # 11

A six membered ring containing one double bond called

Question # 12

Replacement of hydrogen by NO2group is called

Question # 13

The addition of unsymmetrical reagent to an unsymmetrical alkene is in accordance with the rule

Question # 14

During reaction of O2and alkenes, a product:

Question # 15

For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to

Question # 16

The temp. used for the hydrogenation of alkenes using Ni is

Question # 17

Octane number is zero for

Question # 18

Preparation of vegetable ghee involves

Question # 19

Aromatic hydrocarbons are the derivatives of

Question # 20

Alkyne is :

Question # 21

The general formula of alkane is

Question # 22

Kolb's method has limited synthetic applications due to

Question # 23

Synthetic rubber is made by polymerization of

Question # 24

The next homologue of C10H22will be

Question # 25

Which is more active ?

Question # 26

Incomplete oxidation of alkanes yields

Question # 27

Formula of chloroform is:

Question # 28

Alkanes are least reactive towards:

Question # 29

Preparation of vegetable ghee involves:

Question # 30

Which one of the following gases is used for artificial ripening of fruits

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ECAT Chemistry Chapter 19 Important MCQ's

Sr.# Question Answer
1 CnH2nis the general formula of
A. Alkanes
B. Alkanes
C. alkynes
D. None of above
2 Preparation of vegetable ghee involves
A. Halogenations
B. Hydrogenations
C. Hydroxylation
D. Dehydrogenations
3 Most common reactions of benzene and its derivatives are
A. electrophilic addition reactions
B. electrophilic substitution reactions
C. Nucleophilic addition reactions
D. Nucleophilic subtitution reactions
4 If we remove one hydrogen atom from an alkane we obtain a group called
A. Acetyle group
B. Formyle group
C. Alkyle group
D. Ketyle group
5 Synthesis of rubber is made by polymerization of
A. Chloroform
B. Acetylene
C. Divinylacetylene
D. Butene
6 Raney - nickel is the alloy of Ni with
A. Pt
B. Al
C. Cu
D. Pd
7 For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to
A. Hydrolysis
B. Oxidation
C. Hydrogenation
D. Electrolysis
8 An alkane is produced when an alkyle halide reacts with zinc in the presence of
A. HCl
B. CH3COOH
C. Both a & b
D. None
9 Hydrocarbons contain :
A. Carbon only carbon
B. Hydrogen only
C. Carbon & hydrogen
D. Carbon , hydrogen & halogen
10 Sulphuric acid generates nitronium ion by reacting with
A. Nitric acid
B. Nitrogen gas
C. Nitrous acid
D. Potassium nitrate

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