(a) Two
(b) Five
(c) Three
(d) Four
Solution:
Option (b) is the answer.
Neopentane, commonly known as 2,2-dimethylpropane, is a five-carbon double-branched-chain alkane. At room temperature and pressure, neopentane is a flammable gas that can condense into a highly volatile liquid on a cold day, in an ice bath, or when compressed to a higher pressure.