Among the isomeric alkanes of molecular formula `C_(5)H_(12)`, identify the one that on photochemical chlorination yields
(i) A single monochloride.
(ii) Three isomeric monochlorides.
(iii) Four isomeric monochlorides.

Explanation

(i) `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)`
(ii) `underset("n-Pentane")(overset(a)CH_(3)-overset(b)CH_(2)-overset(c)CH_(2)-overset(b)CH_(2)-overset(a)CH_(3))` Replacement of a, b or c H atom give different products.
(iii) `overset(a)CH_(3)-underset(overset(a)CH_(3))underset(|)(overset(b)CH)-overset(c)CH_(2)-overset(d)CH_(3)` Replacement of a, b,c and d H atoms give different products