ECAT Pre Engineering Chemistry Chapter 20 MCQ Test With Answer

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

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

Question # 2

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

Question # 3

Ratio of carbon to hydrogen in aromatic compounds is:

Question # 4

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

Question # 5

Simplest aromatic compound is

Question # 6

The benzene molecule contains

Question # 7

The benzene molecule contains:

Question # 8

Benzene was discovered by first of all:

Question # 9

Benzene acid can be prepared from the oxidation of:

Question # 10

Which of the following is explosive?

Question # 11

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

Question # 12

Characterstics of aromaic are:

Question # 13

Aroma meas:

Question # 14

During nitration of benzene, the active nitrating agent is:

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Among the following, poly cyclic compound is

Question # 19

Benzene cannot undergo:

Question # 20

Benzene gives reactions generally

Question # 21

Benzene was discovered by first of all

Question # 22

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

Question # 23

Ozonolysis of benzene gives:

Question # 24

Which is the property of benzene?

Question # 25

The electrophile in aromatic sulphontion is:

Question # 26

Benzoic acid can be prepared from the oxidation of

Question # 27

During nitration of benzene. the active nitrating agent is

Question # 28

Bond angle in benzene is :

Question # 29

Ratio of carbon to hydrogen in aromatic compounds is

Question # 30

Ozonolysis of benzene gives

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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 Empirical formula mass of benzene is times lesser than molecular formula mass
A. four
B. five
C. six
D. seven
3 Among the following, poly cyclic compound is
A. styrene
B. cumene
C. naphthalene
D. xylene
4 The benzene molecule contains:
A. Three double bond
B. Two double bond
C. One double bond
D. DelocalizedᏘ electron charge
5 Acylation of benzene to produce aliphatic aromatic ketones is known as:
A. Friedel Craft's reaction
B. Benzene condensation
C. Hydroformylation
D. Cellemense
6 Which of the following is explosive:
A. Trinitropheonal
B. Nitropheonal
C. Nitromethane
D. Nitrobenzene
7 Ratio of carbon to hydrogen in aromatic compounds is:
A. Low than alkanes
B. High than alkanes
C. Low than alkanes not high than alkanes
D. High than alkanes
8 Which of the following is explosive?
A. Trinitrophenol
B. Nitrophenol
C. Nitromethane
D. Nitrobenzene
9 Which terms was derived from " aroma"?
A. atom
B. hydrocarbons
C. aromatic
D. aliphatic
10 Which term was derived from atomos?
A. atom
B. hydrocarbon
C. aromatic
D. aliphatic

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