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

Which is the property of benzene:

Question # 2

Bond angle in benzene is

Question # 3

Aromatic hydrocarbons are the derivatives of:

Question # 4

The electrophile in aromatic sulphontion is:

Question # 5

Which terms was derived from " aroma"?

Question # 6

Benzene gives reactions generally:

Question # 7

Ratio of carbon to hydrogen in aromatic compounds is

Question # 8

Aromatic hydrocarbons are derivatives of

Question # 9

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 10

Which of the following is explosive:

Question # 11

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

Question # 12

Simplest aromatic compound is

Question # 13

Benzene cannot undergo

Question # 14

Aromatic compounds burn with sooty flame cause

Question # 15

Benzene acid can be prepared from the oxidation of:

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The benzene molecule contains

Question # 20

Among the following, poly cyclic compound is:

Question # 21

The electrophile in aromatic sulphonation Is

Question # 22

Benzoic acid can be prepared from the oxidation of

Question # 23

Benzene was discovered by first of all:

Question # 24

Among the following, poly cyclic compound is

Question # 25

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

Question # 26

The hydridization in benzene is

Question # 27

Which compound is the most reactive one?

Question # 28

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

Question # 29

Benzene gives reactions generally

Question # 30

Benzene gives reactions generally:

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ECAT Chemistry Chapter 20 Important MCQ's

Sr.# Question Answer
1 Kekule structures contributed towards actual structure of benzene
A. 60%
B. 70%
C. 80%
D. 90%
2 Benzene cannot undergo
A. substitution reactions
B. addition reactions
C. oxidation reactions
D. elimination reactions
3 The electrophile in aromatic sulphontion is:
A. H2SO4
B. HSO4
C. SO3
D. SO3+
4 Ratio of carbon to hydrogen in aromatic compounds is
A. Low than alkanes
B. High than alkanes
C. Low than alkenes not high than alkanes
D. High than high than alkenes
5 empirical formula mass of benzene is time lesser than moleculer formula mass:
A. four
B. five
C. six
D. seven
6 Benzoic acid can be prepared from the oxidation of
A. benzene
B. ethyl benzene
C. benzoic acid
D. toluene
7 The electrophile in aromatic sulphonation Is
A. H2SO4
B. HSO4-
C. SO3
D. SO3+
8 Which of the following is explosive:
A. Trinitropheonal
B. Nitropheonal
C. Nitromethane
D. Nitrobenzene
9 Resonance energy of benzene is (in KJ mol-1):
A. 120
B. 150
C. 170
D. 180
10 Characterstics of aromaic are:
A. how hydrogen carbon ratio than alkanes
B. characterstics oudour
C. a &B
D. Characterstics properties

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