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

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

Question # 2

Kekule structures contributed towards actual structure of benzene

Question # 3

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

Question # 4

Characterstics of aromaic are:

Question # 5

During nitration of benzene, the active nitrating agent is:

Question # 6

Among the following, poly cyclic compound is

Question # 7

Benzene gives reactions generally:

Question # 8

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

Question # 9

The hybirdization in benzene is:

Question # 10

Aromatic hydrocarbons are the derivatives of:

Question # 11

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

Question # 12

Acyiation of benzene to produce aliphatic aromatic ketones is known as

Question # 13

During nitration of benzene. the active nitrating agent is

Question # 14

Monosubstituted benzene can have disubstitution at position:

Question # 15

The benzene molecule contains

Question # 16

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 17

Which terms was derived from " aroma"?

Question # 18

Ozonolysis of benzene gives:

Question # 19

Bond angle in benzene is

Question # 20

Benzene gives reactions generally:

Question # 21

Monosubstituted benzene can have disubstitution at position

Question # 22

Which is the property of benzene?

Question # 23

Which is the property of benzene:

Question # 24

The hydridization in benzene is

Question # 25

Benzene was discovered by first of all

Question # 26

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

Question # 27

The benzene molecule contains:

Question # 28

Benzene acid can be prepared from the oxidation of:

Question # 29

Aromatic compounds burn with sooty flame cause

Question # 30

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

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 The hybirdization in benzene is:
A. sp3
B. sp2
C. sp2
D. dsp2
2 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
3 Which of the following acid can be used as a catalyst in Friedel craft's reaction
A. AlCl3
B. HNO3
C. BeCl2
D. NaCl
4 Aromatic hydrocarbons are derivatives of
A. normal series of paraffins
B. alkene
C. benzene
D. cyclohexane
5 Benzene cannot undergo
A. substitution reactions
B. addition reactions
C. oxidation reactions
D. elimination reactions
6 The electrophile in aromatic sulphonation Is
A. H2SO4
B. HSO4-
C. SO3
D. SO3+
7 Kekule structures contributed towards actual structure of benzene
A. 60%
B. 70%
C. 80%
D. 90%
8 Benzene gives reactions generally
A. electrophilic
B. addition substitution
C. synthesis
D. addition and electrophilic substitution
9 empirical formula mass of benzene is time lesser than moleculer formula mass:
A. four
B. five
C. six
D. seven
10 Ozonolysis of benzene gives:
A. Nitration
B. sulphonation
C. ozonide
D. glyoxal

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