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

Arenes are also called

Question # 2

During nitration of benzene. the active nitrating agent is

Question # 3

Benzene cannot undergo:

Question # 4

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

Question # 5

Benzoic acid can be prepared from the oxidation of

Question # 6

Among the following, poly cyclic compound is:

Question # 7

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 8

Monosubstituted benzene can have disubstitution at position

Question # 9

Acylation of benzene to produce aliphatic aromatic ketones is known as:

Question # 10

Which term was derived from "aroma":

Question # 11

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

Question # 12

Which compound is the most reactive one?

Question # 13

Bond angle in benzene is

Question # 14

Which compound is the most reactvie one:

Question # 15

Which is the property of benzene?

Question # 16

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

Question # 17

During nitration of benzene, the active nitrating agent is:

Question # 18

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

Question # 19

Aromatic hydrocarbons are the derivatives of:

Question # 20

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

Question # 21

Monosubstituted benzene can have disubstitution at position:

Question # 22

The electrophile in aromatic sulphontion is:

Question # 23

Benzene cannot undergo

Question # 24

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

Question # 25

Simplest aromatic compound is

Question # 26

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

Question # 27

Benzene gives reactions generally:

Question # 28

Which of the following is explosive?

Question # 29

Aroma meas:

Question # 30

The benzene molecule contains

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 Aromatic compounds burn with sooty flame cause
A. They have high percentage of hydrogen
B. They have a ring structure
C. They have high percentage of carbon
D. They resist reaction with air
2 The hybirdization in benzene is:
A. sp3
B. sp2
C. sp2
D. dsp2
3 Ozonolysis of benzene gives:
A. Nitration
B. sulphonation
C. ozonide
D. glyoxal
4 Resonance energy of benzene is (in KJ mol-1):
A. 120
B. 150
C. 170
D. 180
5 During nitration of benzene, the active nitrating agent is:
A. NO3-1
B. NO2+
C. NO2-1
D. HNO3
6 Benzene gives reactions generally:
A. Electropholic subsitution
B. addition
C. synthesis
D. addition and electropholic subsitution
7 empirical formula mass of benzene is time lesser than moleculer formula mass:
A. four
B. five
C. six
D. seven
8 Benzene gives reactions generally
A. electrophilic
B. addition substitution
C. synthesis
D. addition and electrophilic substitution
9 Which terms was derived from " aroma"?
A. atom
B. hydrocarbons
C. aromatic
D. aliphatic
10 Which of the following acid can be used as a catalyst in Friedel craft's reaction
A. AlCl3
B. HNO3
C. BeCl2
D. NaCl

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