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 :

Sublimation is defined as the process in which a solid converts directly into vapour without passing through the liquid state. This process is feasible only when the substance has a significant vapour pressure at a temperature below its melting point. Therefore, sublimation depends on the vapour pressure characteristics of a compound, not on having a low melting point. Hence Statement I is false.

The boiling point of a liquid is the temperature at which its vapour pressure $$P_{\text{vap}}$$ equals the external pressure $$P_{\text{ext}}$$: $$P_{\text{vap}} = P_{\text{ext}}$$ When the external pressure is reduced, the temperature required for the vapour pressure to reach that lower external pressure also decreases. Thus the boiling point decreases as the external pressure is reduced. Statement II claims the boiling point increases on reducing external pressure, which contradicts this principle. Hence Statement II is false.

Since both Statement I and Statement II are false, the correct choice is Option B.