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

Monosubstituted benzene can have disubstitution at position:

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

Kekule structures contributed towards actual structure of benzene

Question # 6

The electrophile in aromatic sulphontion is:

Question # 7

Which compound is the most reactive one?

Question # 8

The electrophile in aromatic sulphonation Is

Question # 9

Benzoic acid can be prepared from the oxidation of

Question # 10

Which is the property of benzene?

Question # 11

Benzene gives reactions generally:

Question # 12

Benzene cannot undergo

Question # 13

Ozonolysis of benzene gives

Question # 14

Benzene was discovered by first of all:

Question # 15

Benzene gives reactions generally:

Question # 16

Aromatic hydrocarbons are the derivatives of:

Question # 17

The hybirdization in benzene is:

Question # 18

Ratio of carbon to hydrogen in aromatic compounds is

Question # 19

Which term was derived from "aroma":

Question # 20

The hydridization in benzene is

Question # 21

Ozonolysis of benzene gives:

Question # 22

Which of the following is explosive:

Question # 23

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

Question # 24

Acyiation of benzene to produce aliphatic aromatic ketones is known as

Question # 25

Which term was derived from atomos?

Question # 26

Which terms was derived from " aroma"?

Question # 27

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

Question # 28

Benzene was discovered by first of all

Question # 29

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 30

Aromatic hydrocarbons are derivatives of

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 During nitration of benzene. the active nitrating agent is
A. NO3-1
B. NO2+
C. NO2-1
D. HNO3
2 Benzene gives reactions generally:
A. Electropholic subsitution
B. addition
C. synthesis
D. addition and electropholic subsitution
3 Kekule structures contributed towards actual structure of benzene
A. 60%
B. 70%
C. 80%
D. 90%
4 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
5 Bond angle in benzene is
A. 109.5°
B. 180°
C. 120°
D. 107.20
6 Simple aromatic compound is:
A. benzene
B. toluene
C. aniline
D. phenol
7 Ozonolysis of benzene gives
A. nitration
B. sulphonation
C. ozonide
D. glyoxal
8 The conversion of n-hexane into benzene by heating in the presence of CO, is called
A. lsomerization
B. Aromatization
C. Dealkylation
D. Rearrangement
9 Empirical formula mass of benzene is times lesser than molecular formula mass
A. four
B. five
C. six
D. seven
10 Aromatic hydrocarbons are derivatives of
A. normal series of paraffins
B. alkene
C. benzene
D. cyclohexane

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