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Online Tests
ECAT Chemistry Chapter 20 Aromatic Hydrocarbons Online Test MCQs With Answers
Question # 1
Which compound is the most reactvie one:
Choose an answer
benzene
ethene
ethane
ethyne
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Question # 2
Which terms was derived from " aroma"?
Choose an answer
atom
hydrocarbons
aromatic
aliphatic
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Question # 3
Characterstics of aromaic are:
Choose an answer
how hydrogen carbon ratio than alkanes
characterstics oudour
a &B
Characterstics properties
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Question # 4
Which of the following acid can be used as a catalyst in Friedel Craft's reaction?
Choose an answer
AlCl
3
HNO
3
BeCl
2
NaCl
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Question # 5
Benzene was discovered by first of all
Choose an answer
Michael Faraday
Hofmann
Ainderson
Sorenbon
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Question # 6
The benzene molecule contains
Choose an answer
Three double bond
Two double bond
One double bond
Delocalized pie electron charge
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Question # 7
Aromatic hydrocarbons are the derivatives of:
Choose an answer
Normal series of parrafins
Alkene
Benzene
Cyclohexane
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Question # 8
During nitration of benzene. the active nitrating agent is
Choose an answer
NO
3
-1
NO
2
+
NO
2
-1
HNO
3
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Question # 9
Bond angle in benzene is :
Choose an answer
109..5
o
180
o
120
o
107.2
o
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Question # 10
Which is the property of benzene:
Choose an answer
Decolourizes KMnO
4
straight chain structure
only double bond is present
triple and double bond
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Question # 11
Which of the following is explosive?
Choose an answer
Trinitrophenol
Nitrophenol
Nitromethane
Nitrobenzene
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Question # 12
Among the following, poly cyclic compound is:
Choose an answer
styrene
cumene
napthalene
xylene
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Question # 13
Benzene gives reactions generally:
Choose an answer
Electropholic subsitution
addition
synthesis
addition and electropholic subsitution
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Question # 14
Acyiation of benzene to produce aliphatic aromatic ketones is known as
Choose an answer
Friedel Craft's reaction
benzenecondensation
hydroformylation
Clemmensen reduction
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Question # 15
Ozonolysis of benzene gives
Choose an answer
nitration
sulphonation
ozonide
glyoxal
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Question # 16
Which compound is the most reactive one?
Choose an answer
benzene
ethene
ethane
ethyne
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Question # 17
Benzene cannot undergo:
Choose an answer
Substitutions reactions
Addition reactions
Oxidation reactions
Elimination reactions
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Question # 18
Ratio of carbon to hydrogen in aromatic compounds is
Choose an answer
Low than alkanes
High than alkanes
Low than alkenes not high than alkanes
High than high than alkenes
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Question # 19
Simple aromatic compound is:
Choose an answer
benzene
toluene
aniline
phenol
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Question # 20
The hybirdization in benzene is:
Choose an answer
sp
3
sp
2
sp
2
dsp
2
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Question # 21
Amongst the following, the compound that can be most readily sulphonated is
Choose an answer
toluene
benzene
nitrobenzene
chlorobenzene
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Question # 22
Resonance energy of benzene is (in KJ mol
-1
)
Choose an answer
120
150
170
180
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Question # 23
Benzene was discovered by first of all:
Choose an answer
Micheal Faraday
Hofmann
Ainderson
Sorenbon
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Question # 24
empirical formula mass of benzene is time lesser than moleculer formula mass:
Choose an answer
four
five
six
seven
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Question # 25
Ozonolysis of benzene gives:
Choose an answer
Nitration
sulphonation
ozonide
glyoxal
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Question # 26
Which is the property of benzene?
Choose an answer
decolourizes KMnO
4
straight chain structure
only double bond is present
triple and double bond
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Question # 27
Which term was derived from "aroma":
Choose an answer
Atom
Hydrocarbons
aromatic
aliphatic
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Question # 28
Aromatic compounds burn with sooty flame cause
Choose an answer
They have high percentage of hydrogen
They have a ring structure
They have high percentage of carbon
They resist reaction with air
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Question # 29
Aroma meas:
Choose an answer
Fragrant
Invisible
latest affinityt
benzene
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Question # 30
Kekule structures contributed towards actual structure of benzene
Choose an answer
60%
70%
80%
90%
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