What is the name of this hydrocarbon?

a.) di-ethylbutane
b.) di-ethylpropane
c.) methylpropane
d.) methylpropene
e.) methylpropyne

Answer : The name of the given hydrocarbon is, 2-methylpropane

Explanation :

The rules for naming of alkanes are given as follows :

First select the longest possible carbon chain and number them.For the number of carbon atom, we add prefix as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10. A suffix '-ane' is added at the end of the name. If two of more similar alkyl groups are present, then the words 'di', 'tri' 'tetra' and so on are used to specify the number of times these alkyl groups appear in the chain.

Hence, the name for given hydrocarbon will be, 2-methylpropane

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