Given below are two statements :

Statement I : Sublimation is used for the separation and purification of compounds with low melting point.

Statement II : The boiling point of a liquid increases as the external pressure is reduced. In the light of the above statements,

choose the correct answer from the options given below :

$$ \text { The IUPAC name of the following compound is : } $$

Match List - I with List - II.

Choose the correct answer from the options given below :

Given below are four compounds :

(a) n-propyl chloride       (b) iso-propyl chloride

(c) sec-butyl chloride      (d) neo-pentyl chloride

Percentage of carbon in the one which exhibits optical isomerism is :