Question

Another name for 1,2-dimethylbenzene is m-dimethylbenzene.
a. true
b. false

Answer 1

Another name for 1,2-dimethylbenzene is o-dimethylbenzene (ortho-dimethylbenzene), not m-dimethylbenzene (meta-dimethylbenzene), making the statement false.

Step-by-step explanation:

The correct statement is that another name for 1,2-dimethylbenzene is o-dimethylbenzene (ortho-dimethylbenzene), not m-dimethylbenzene (meta-dimethylbenzene). Therefore, the answer is false. The prefix meta (m-) refers to a 1,3 arrangement on the benzene ring, whereas ortho (o-) refers to a 1,2 arrangement, which means the substituents are on adjacent carbon atoms. On the other hand, para (p-) refers to a 1,4 arrangement across the benzene ring.