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Byju's Answer
Standard XII
Chemistry
Preparation of Benzene and Homologues
Nitrobenzene ...
Question
Nitrobenzene on reaction with conc.
H
N
O
3
/
H
2
S
O
4
at 80 100C forms which one of the following products?
A
1,2-Dinitrobenzene
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B
1,3-Dinitrobenzene
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C
1,4-Dinitrobenzene
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D
1,2,4-Trinitrobenzene
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Solution
The correct option is
C
1,3-Dinitrobenzene
When HNO
3
and H
2
SO
4
react together it gives nitronium ion ( O= N
+
=O )
This nitronium ion reacts on meta position of nitrobenzene, give 1,3-dinitrobenzene.
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When nitrobenzene is heated with conc.
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and conc.
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the product would be obtained :-
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Q.
Arrange the following compounds in order of decreasing reactivity towards electrophilic substitution reaction.
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(II) Nitrobenzene
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