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

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

Question # 2

The electrophile in aromatic sulphonation Is

Question # 3

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

Question # 4

Monosubstituted benzene can have disubstitution at position

Question # 5

Ratio of carbon to hydrogen in aromatic compounds is

Question # 6

Which compound is the most reactvie one:

Question # 7

Bond angle in benzene is :

Question # 8

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

Question # 9

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

Question # 10

During nitration of benzene. the active nitrating agent is

Question # 11

Ozonolysis of benzene gives:

Question # 12

Which of the following is explosive?

Question # 13

Benzene was discovered by first of all:

Question # 14

During nitration of benzene, the active nitrating agent is:

Question # 15

Which is the property of benzene?

Question # 16

Among the following, poly cyclic compound is

Question # 17

Benzene gives reactions generally

Question # 18

Benzene cannot undergo

Question # 19

Which terms was derived from " aroma"?

Question # 20

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

Question # 21

Bond angle in benzene is

Question # 22

The benzene molecule contains

Question # 23

Which term was derived from atomos?

Question # 24

Which compound is the most reactive one?

Question # 25

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

Question # 26

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

Question # 27

Monosubstituted benzene can have disubstitution at position:

Question # 28

Characterstics of aromaic are:

Question # 29

Aromatic hydrocarbons are the derivatives of:

Question # 30

Ratio of carbon to hydrogen in aromatic compounds is:

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 The hydridization in benzene is
A. sp3
B. sp2
C. sp4
D. dsp2
2 Arenes are also called
A. atom
B. hydrocarbons
C. aromatic
D. benzene
3 Characterstics of aromaic are:
A. how hydrogen carbon ratio than alkanes
B. characterstics oudour
C. a &B
D. Characterstics properties
4 empirical formula mass of benzene is time lesser than moleculer formula mass:
A. four
B. five
C. six
D. seven
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 Resonance energy of benzene is (in KJ mol-1)
A. 120
B. 150
C. 170
D. 180
7 Aroma meas:
A. Fragrant
B. Invisible
C. latest affinityt
D. benzene
8 Bond angle in benzene is
A. 109.5°
B. 180°
C. 120°
D. 107.20
9 The benzene molecule contains
A. Three double bond
B. Two double bond
C. One double bond
D. Delocalized pie electron charge
10 Among the following, poly cyclic compound is
A. styrene
B. cumene
C. naphthalene
D. xylene

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