Options:
A.
B.
C.
D.
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Earlier discussion
4 older comments kept for context.
Oyeyemi Emmanuel
C is the correct answer because it para , Orth ,meta.
Dairo Elizabeth
1,2-, 1,3-, or 1,4-dichlorobenzene (also called ortho-, meta-, and para-dichlorobenzene, respectively). Both 1,2- and 1,3-dichlorobenzene are liquids. correct answer is C
Wande
The correct answer is C
Isomers of dichlorobenzene are 1,2 dichlorobenzene, 1,3 dichlorobenzene and 1,4 dichlorobenzene
Aderogba Qudus
Dichlorobenzene can have 3 isomers like 1,2-dichlorobenzene, 1,3-dichlorobenzene and 1,4-dichlorobenzene.
So 3 is correct
Option C is correct.