Among the three iso meric alkanes `(C_5H_12)`, identify the one that on chlorination yields
a) Four isomeric monochlorides
b) Three isomeric monochlorides
c) A single monochloride

Explanation

a) `CH_3-underset(CH_3)underset(|)(C)H-CH_2-CH_3`
In methylbutane, there are four different carbon atoms and hence four different hydrogen atoms. Thus, four isomeric products are possible.
b) `CH_3-CH_2-CH_2-CH_2-CH_3`
In pentane, there are three different carbon atoms and hence three different hydrogen atoms. Then, three isomeric products are possible.
c) `H_3C-underset(CH_3)underset(|)overset(CH_3)overset(|)(C)-CH_3`
In dimethylpropane, all the hydrogen atoms are equivalent. Hence only one isomeric product is possible.