ECAT Pre Engineering Chemistry Chapter 20 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 20 Aromatic Hydrocarbons

Try The MCQ's Test For ECAT Chemistry Chapter 20 Aromatic Hydrocarbons

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ECAT Chemistry Chapter 20 Aromatic Hydrocarbons

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Question # 1

During nitration of benzene. the active nitrating agent is

Question # 2

Amongst the following, the compound that can be most readily sulphonated is

Question # 3

Benzene was discovered by first of all:

Question # 4

The conversion of n-hexane into benzene by heating in the presence of CO, is called

Question # 5

Aromatic hydrocarbons are derivatives of

Question # 6

The benzene molecule contains:

Question # 7

Benzene cannot undergo

Question # 8

Monosubstituted benzene can have disubstitution at position:

Question # 9

Resonance energy of benzene is (in KJ mol-1):

Question # 10

Simplest aromatic compound is

Question # 11

Which compound is the most reactive one?

Question # 12

Empirical formula mass of benzene is times lesser than molecular formula mass

Question # 13

empirical formula mass of benzene is time lesser than moleculer formula mass:

Question # 14

Aromatic compounds burn with sooty flame cause:

Question # 15

The hydridization in benzene is

Question # 16

Ratio of carbon to hydrogen in aromatic compounds is

Question # 17

Benzene gives reactions generally:

Question # 18

Benzene gives reactions generally

Question # 19

Which term was derived from "aroma":

Question # 20

The conversion of n-hexane into benzene by heating in the presence of Cr2O3 is called:

Question # 21

Kekule structures contributed towards actual structure of benzene

Question # 22

Which is the property of benzene:

Question # 23

The electrophile in aromatic sulphonation Is

Question # 24

Among the following, poly cyclic compound is

Question # 25

Aroma meas:

Question # 26

Aromatic compounds burn with sooty flame cause

Question # 27

Which of the following is explosive?

Question # 28

Bond angle in benzene is

Question # 29

Bond angle in benzene is :

Question # 30

Ozonolysis of benzene gives

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 Monosubstituted benzene can have disubstitution at position
A. ortho
B. meta
C. para
D. a, b, c
2 Benzene cannot undergo
A. substitution reactions
B. addition reactions
C. oxidation reactions
D. elimination reactions
3 Simplest aromatic compound is
A. bezene
B. toluene
C. aniline
D. phenol
4 The conversion of n-hexane into benzene by heating in the presence of Cr2O3 is called:
A. Isomerization
B. Aromatization
C. Dealkylation
D. Rearrangment
5 Amongst the following, the compound that can be most readily sulphonated is
A. toluene
B. benzene
C. nitrobenzene
D. chlorobenzene
6 The electrophile in aromatic sulphonation Is
A. H2SO4
B. HSO4-
C. SO3
D. SO3+
7 Benzene acid can be prepared from the oxidation of:
A. benzene
B. ethyl benzene
C. benzonic acid
D. toluene
8 Bond angle in benzene is
A. 109.5°
B. 180°
C. 120°
D. 107.20
9 Which compound is the most reactive one?
A. benzene
B. ethene
C. ethane
D. ethyne
10 Benzoic acid can be prepared from the oxidation of
A. benzene
B. ethyl benzene
C. benzoic acid
D. toluene

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