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

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

Question # 2

During nitration of benzene, the active nitrating agent is:

Question # 3

The hybirdization in benzene is:

Question # 4

Characterstics of aromaic are:

Question # 5

Which of the following acid can be used as a catalyst in Friedel Craft's reaction?

Question # 6

Ozonolysis of benzene gives:

Question # 7

Which of the following is explosive:

Question # 8

During nitration of benzene. the active nitrating agent is

Question # 9

Simplest aromatic compound is

Question # 10

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

Question # 11

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

Question # 12

Benzene gives reactions generally:

Question # 13

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 14

Among the following, poly cyclic compound is:

Question # 15

Which is the property of benzene?

Question # 16

Benzene cannot undergo

Question # 17

Benzene was discovered by first of all

Question # 18

Aromatic hydrocarbons are derivatives of

Question # 19

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

Question # 20

Ratio of carbon to hydrogen in aromatic compounds is

Question # 21

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

Question # 22

Aromatic compounds burn with sooty flame cause:

Question # 23

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

Question # 24

Benzene acid can be prepared from the oxidation of:

Question # 25

Which term was derived from "aroma":

Question # 26

Monosubstituted benzene can have disubstitution at position:

Question # 27

Benzoic acid can be prepared from the oxidation of

Question # 28

Aromatic hydrocarbons are the derivatives of:

Question # 29

The electrophile in aromatic sulphontion is:

Question # 30

Kekule structures contributed towards actual structure of benzene

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 Arenes are also called
A. atom
B. hydrocarbons
C. aromatic
D. benzene
2 Benzene reacts with Cl, in sunlight to give the end product
A. C6H6Cl6
B. C6H6Cl
C. O - C6H4Cl2
D. P-C6H4Cl2
3 Characterstics of aromaic are:
A. how hydrogen carbon ratio than alkanes
B. characterstics oudour
C. a &B
D. Characterstics properties
4 Monosubstituted benzene can have disubstitution at position:
A. Ortho
B. meta
C. para
D. a, b, c
5 Which is the property of benzene:
A. Decolourizes KMnO4
B. straight chain structure
C. only double bond is present
D. triple and double bond
6 The conversion of n-hexane into benzene by heating in the presence of CO, is called
A. lsomerization
B. Aromatization
C. Dealkylation
D. Rearrangement
7 Ozonolysis of benzene gives:
A. Nitration
B. sulphonation
C. ozonide
D. glyoxal
8 Aromatic compounds burn with sooty flame cause:
A. They have high percentage of hydrogan
B. They have ring structure
C. They have high percentage of carbon
D. They resist reaction with air
9 Kekule structures contributed towards actual structure of benzene
A. 60%
B. 70%
C. 80%
D. 90%
10 Which is the property of benzene?
A. decolourizes KMnO4
B. straight chain structure
C. only double bond is present
D. triple and double bond

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