ECAT Pre Engineering Chemistry Chapter 20 MCQ Test With Answer

Question # 1

Characterstics of aromaic are:

how hydrogen carbon ratio than alkanes A
characterstics oudour B
a &B C
Characterstics properties D

Question # 2

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

four A
five B
six C
seven D

Question # 3

Simple aromatic compound is:

benzene A
toluene B
aniline C
phenol D

Question # 4

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

AlCl₃ A
HNO₃ B
BeCl₂ C
NaCl D

Question # 5

Benzene cannot undergo:

Substitutions reactions A
Addition reactions B
Oxidation reactions C
Elimination reactions D

Question # 6

Arenes are also called

atom A
hydrocarbons B
aromatic C
benzene D

Question # 7

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

C₆H₆Cl₆ A
C₆H₆Cl B
O - C₆H₄Cl₂ C
P-C₆H₄Cl₂ D

Question # 8

Which terms was derived from " aroma"?

atom A
hydrocarbons B
aromatic C
aliphatic D

Question # 9

Ratio of carbon to hydrogen in aromatic compounds is

Low than alkanes A
High than alkanes B
Low than alkenes not high than alkanes C
High than high than alkenes D

Question # 10

Acyiation of benzene to produce aliphatic aromatic ketones is known as

Friedel Craft's reaction A
benzenecondensation B
hydroformylation C
Clemmensen reduction
D

Question # 11

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

120 A
150 B
170 C
180 D

Question # 12

Benzoic acid can be prepared from the oxidation of

benzene A
ethyl benzene B
benzoic acid C
toluene D

Question # 13

Kekule structures contributed towards actual structure of benzene

60% A
70% B
80% C
90% D

Question # 14

The benzene molecule contains:

Three double bond A
Two double bond B
One double bond C
DelocalizedᏘ electron charge D

Question # 15

Which is the property of benzene?

decolourizes KMnO₄ A
straight chain structure B
only double bond is present C
triple and double bond D

Question # 16

Which term was derived from "aroma":

Atom A
Hydrocarbons B
aromatic C
aliphatic D

Question # 17

During nitration of benzene. the active nitrating agent is

NO₃^-1 A
NO₂⁺ B
NO₂^-1 C
HNO₃ D

Question # 18

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

Friedel Craft's reaction A
Benzene condensation B
Hydroformylation C
Cellemense

D

Question # 19

Among the following, poly cyclic compound is:

styrene A
cumene B
napthalene C
xylene D

Question # 20

Ozonolysis of benzene gives:

Nitration A
sulphonation B
ozonide C
glyoxal D

Question # 21

Benzene acid can be prepared from the oxidation of:

benzene A
ethyl benzene B
benzonic acid C
toluene D

Question # 22

Aromatic compounds burn with sooty flame cause

They have high percentage of hydrogen A
They have a ring structure B
They have high percentage of carbon C
They resist reaction with air D

Question # 23

Aromatic hydrocarbons are the derivatives of:

Normal series of parrafins A
Alkene B
Benzene C
Cyclohexane D

Question # 24

Among the following, poly cyclic compound is

styrene A
cumene B
naphthalene C
xylene D

Question # 25

Monosubstituted benzene can have disubstitution at position

ortho A
meta B
para C
a, b, c D

Question # 26

Aromatic compounds burn with sooty flame cause:

They have high percentage of hydrogan A
They have ring structure B
They have high percentage of carbon C
They resist reaction with air D

Question # 27

Ratio of carbon to hydrogen in aromatic compounds is:

Low than alkanes A
High than alkanes B
Low than alkanes not high than alkanes C
High than alkanes D

Question # 28

Kekule structures contributed towards actual structure of benzene

60% A
70% B
80% C
90% D

Question # 29

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

toluene A
benzene B
nitrobenzene C
chlorobenzene D

Question # 30

Benzene gives reactions generally:

Electropholic subsitution A
addition B
synthesis C
addition and electropholic subsitution D

Sr.#	Question	Answer
1	Among the following, poly cyclic compound is	A. styrene B. cumene C. naphthalene D. xylene
2	empirical formula mass of benzene is time lesser than moleculer formula mass:	A. four B. five C. six D. seven
3	Benzene reacts with Cl, in sunlight to give the end product	A. C₆H₆Cl₆ B. C₆H₆Cl C. O - C₆H₄Cl₂ D. P-C₆H₄Cl₂
4	Characterstics of aromaic are:	A. how hydrogen carbon ratio than alkanes B. characterstics oudour C. a &B D. Characterstics properties
5	Which term was derived from atomos?	A. atom B. hydrocarbon C. aromatic D. aliphatic
6	Aroma meas:	A. Fragrant B. Invisible C. latest affinityt D. benzene
7	Kekule structures contributed towards actual structure of benzene	A. 60% B. 70% C. 80% D. 90%
8	The benzene molecule contains:	A. Three double bond B. Two double bond C. One double bond D. DelocalizedᏘ electron charge
9	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
10	Ozonolysis of benzene gives	A. nitration B. sulphonation C. ozonide D. glyoxal

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ECAT Pre Engineering Chemistry Chapter 20 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 20 Aromatic Hydrocarbons

ECAT Chemistry Chapter 20 Aromatic Hydrocarbons

Characterstics of aromaic are:

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

Simple aromatic compound is:

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

Benzene cannot undergo:

Arenes are also called

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

Which terms was derived from " aroma"?

Ratio of carbon to hydrogen in aromatic compounds is

Acyiation of benzene to produce aliphatic aromatic ketones is known as

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

Benzoic acid can be prepared from the oxidation of

Kekule structures contributed towards actual structure of benzene

The benzene molecule contains:

Which is the property of benzene?

Which term was derived from "aroma":

During nitration of benzene. the active nitrating agent is

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

Among the following, poly cyclic compound is:

Ozonolysis of benzene gives:

Benzene acid can be prepared from the oxidation of:

Aromatic compounds burn with sooty flame cause

Aromatic hydrocarbons are the derivatives of:

Among the following, poly cyclic compound is

Monosubstituted benzene can have disubstitution at position

Aromatic compounds burn with sooty flame cause:

Ratio of carbon to hydrogen in aromatic compounds is:

Kekule structures contributed towards actual structure of benzene

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

Benzene gives reactions generally:

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