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

Among the following, poly cyclic compound is:

Question # 2

Kekule structures contributed towards actual structure of benzene

Question # 3

Monosubstituted benzene can have disubstitution at position:

Question # 4

Benzene was discovered by first of all

Question # 5

The benzene molecule contains

Question # 6

Benzene acid can be prepared from the oxidation of:

Question # 7

Acyiation of benzene to produce aliphatic aromatic ketones is known as

Question # 8

Which is the property of benzene?

Question # 9

Arenes are also called

Question # 10

The hydridization in benzene is

Question # 11

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

Question # 12

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

Question # 13

Which compound is the most reactvie one:

Question # 14

During nitration of benzene, the active nitrating agent is:

Question # 15

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

Question # 16

Aromatic compounds burn with sooty flame cause

Question # 17

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

Question # 18

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 19

Bond angle in benzene is :

Question # 20

Aromatic hydrocarbons are derivatives of

Question # 21

Which of the following is explosive:

Question # 22

Benzene gives reactions generally

Question # 23

Simplest aromatic compound is

Question # 24

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

Question # 25

Ratio of carbon to hydrogen in aromatic compounds is

Question # 26

Aromatic compounds burn with sooty flame cause:

Question # 27

The electrophile in aromatic sulphonation Is

Question # 28

Which compound is the most reactive one?

Question # 29

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

Question # 30

Monosubstituted benzene can have disubstitution at position

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 Monosubstituted benzene can have disubstitution at position
A. ortho
B. meta
C. para
D. a, b, c
2 The hybirdization in benzene is:
A. sp3
B. sp2
C. sp2
D. dsp2
3 Monosubstituted benzene can have disubstitution at position:
A. Ortho
B. meta
C. para
D. a, b, c
4 Bond angle in benzene is
A. 109.5°
B. 180°
C. 120°
D. 107.20
5 The benzene molecule contains:
A. Three double bond
B. Two double bond
C. One double bond
D. DelocalizedᏘ electron charge
6 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
7 The electrophile in aromatic sulphonation Is
A. H2SO4
B. HSO4-
C. SO3
D. SO3+
8 Aromatic hydrocarbons are derivatives of
A. normal series of paraffins
B. alkene
C. benzene
D. cyclohexane
9 Benzene gives reactions generally:
A. Electropholic subsitution
B. addition
C. synthesis
D. addition and electropholic subsitution
10 Which terms was derived from " aroma"?
A. atom
B. hydrocarbons
C. aromatic
D. aliphatic

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