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

00:00
Question # 1

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

Question # 2

Which compound is the most reactvie one:

Question # 3

Which term was derived from atomos?

Question # 4

Benzene reacts with Cl, in sunlight to give the end product

Question # 5

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

Question # 6

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

Question # 7

During nitration of benzene, the active nitrating agent is:

Question # 8

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

Question # 9

Which of the following is explosive:

Question # 10

The hybirdization in benzene is:

Question # 11

Which is the property of benzene:

Question # 12

Aromatic compounds burn with sooty flame cause:

Question # 13

The benzene molecule contains

Question # 14

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

Question # 15

Bond angle in benzene is

Question # 16

Which term was derived from "aroma":

Question # 17

Among the following, poly cyclic compound is:

Question # 18

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

Question # 19

Benzene gives reactions generally

Question # 20

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

Question # 21

Ozonolysis of benzene gives

Question # 22

Aromatic compounds burn with sooty flame cause

Question # 23

Ratio of carbon to hydrogen in aromatic compounds is

Question # 24

Benzene cannot undergo:

Question # 25

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

Question # 26

Kekule structures contributed towards actual structure of benzene

Question # 27

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 28

Benzoic acid can be prepared from the oxidation of

Question # 29

The hydridization in benzene is

Question # 30

The benzene molecule contains:

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 Resonance energy of benzene is (in KJ mol-1):
A. 120
B. 150
C. 170
D. 180
2 Benzene acid can be prepared from the oxidation of:
A. benzene
B. ethyl benzene
C. benzonic acid
D. toluene
3 Which compound is the most reactive one?
A. benzene
B. ethene
C. ethane
D. ethyne
4 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
5 Among the following, poly cyclic compound is
A. styrene
B. cumene
C. naphthalene
D. xylene
6 Benzene reacts with Cl, in sunlight to give the end product
A. C6H6Cl6
B. C6H6Cl
C. O - C6H4Cl2
D. P-C6H4Cl2
7 Which of the following acid can be used as a catalyst in Friedel Craft's reaction?
A. AlCl3
B. HNO3
C. BeCl2
D. NaCl
8 Amongst the following, the compound that can be most readily sulphonated is
A. toluene
B. benzene
C. nitrobenzene
D. chlorobenzene
9 Ozonolysis of benzene gives:
A. Nitration
B. sulphonation
C. ozonide
D. glyoxal
10 The electrophile in aromatic sulphonation Is
A. H2SO4
B. HSO4-
C. SO3
D. SO3+

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