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

Benzene gives reactions generally:

Question # 2

Benzoic acid can be prepared from the oxidation of

Question # 3

The electrophile in aromatic sulphontion is:

Question # 4

Benzene cannot undergo

Question # 5

Simple aromatic compound is:

Question # 6

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

Question # 7

Kekule structures contributed towards actual structure of benzene

Question # 8

Which compound is the most reactvie one:

Question # 9

The benzene molecule contains:

Question # 10

Which compound is the most reactive one?

Question # 11

During nitration of benzene. the active nitrating agent is

Question # 12

Simplest aromatic compound is

Question # 13

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

Question # 14

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

Question # 15

Which is the property of benzene?

Question # 16

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

Question # 17

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

Question # 18

Aromatic hydrocarbons are the derivatives of:

Question # 19

Bond angle in benzene is :

Question # 20

Benzene gives reactions generally:

Question # 21

Kekule structures contributed towards actual structure of benzene

Question # 22

Which terms was derived from " aroma"?

Question # 23

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

Question # 24

Ozonolysis of benzene gives:

Question # 25

The hybirdization in benzene is:

Question # 26

Monosubstituted benzene can have disubstitution at position

Question # 27

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

Question # 28

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

Question # 29

Aromatic compounds burn with sooty flame cause:

Question # 30

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

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Sr.# Question Answer
1 Which term was derived from "aroma":
A. Atom
B. Hydrocarbons
C. aromatic
D. aliphatic
2 Benzene was discovered by first of all:
A. Micheal Faraday
B. Hofmann
C. Ainderson
D. Sorenbon
3 During nitration of benzene, the active nitrating agent is:
A. NO3-1
B. NO2+
C. NO2-1
D. HNO3
4 Benzene was discovered by first of all
A. Michael Faraday
B. Hofmann
C. Ainderson
D. Sorenbon
5 The conversion of n-hexane into benzene by heating in the presence of Cr2O3 is called:
A. Isomerization
B. Aromatization
C. Dealkylation
D. Rearrangment
6 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
7 The hydridization in benzene is
A. sp3
B. sp2
C. sp4
D. dsp2
8 Acyiation of benzene to produce aliphatic aromatic ketones is known as
A. Friedel Craft's reaction
B. benzenecondensation
C. hydroformylation
D.
Clemmensen reduction
9 Monosubstituted benzene can have disubstitution at position:
A. Ortho
B. meta
C. para
D. a, b, c
10 Bond angle in benzene is :
A. 109..5o
B. 180o
C. 120o
D. 107.2o
11 Among the following, poly cyclic compound is
A. styrene
B. cumene
C. naphthalene
D. xylene
12 Ozonolysis of benzene gives
A. nitration
B. sulphonation
C. ozonide
D. glyoxal
13 Benzene gives reactions generally:
A. Electropholic subsitution
B. addition
C. synthesis
D. addition and electropholic subsitution
14 Benzene cannot undergo:
A. Substitutions reactions
B. Addition reactions
C. Oxidation reactions
D. Elimination reactions
15 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
16 Resonance energy of benzene is (in KJ mol-1)
A. 120
B. 150
C. 170
D. 180
17 Empirical formula mass of benzene is times lesser than molecular formula mass
A. four
B. five
C. six
D. seven
18 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
19 Amongst the following, the compound that can be most readily sulphonated is:
A. Toluene
B. Benzene
C. nitrobenzene
D. chlorobenzene
20 Simple aromatic compound is:
A. benzene
B. toluene
C. aniline
D. phenol
21 Benzene reacts with Cl, in sunlight to give the end product
A. C6H6Cl6
B. C6H6Cl
C. O - C6H4Cl2
D. P-C6H4Cl2
22 Aromatic hydrocarbons are derivatives of
A. normal series of paraffins
B. alkene
C. benzene
D. cyclohexane
23 Benzene acid can be prepared from the oxidation of:
A. benzene
B. ethyl benzene
C. benzonic acid
D. toluene
24 The hybirdization in benzene is:
A. sp3
B. sp2
C. sp2
D. dsp2
25 The conversion of n-hexane into benzene by heating in the presence of CO, is called
A. lsomerization
B. Aromatization
C. Dealkylation
D. Rearrangement
26 Amongst the following, the compound that can be most readily sulphonated is
A. toluene
B. benzene
C. nitrobenzene
D. chlorobenzene
27 Benzoic acid can be prepared from the oxidation of
A. benzene
B. ethyl benzene
C. benzoic acid
D. toluene
28 Arenes are also called
A. atom
B. hydrocarbons
C. aromatic
D. benzene
29 Characterstics of aromaic are:
A. how hydrogen carbon ratio than alkanes
B. characterstics oudour
C. a &B
D. Characterstics properties
30 Ozonolysis of benzene gives:
A. Nitration
B. sulphonation
C. ozonide
D. glyoxal

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