In the fractional distillation of crude petroleum,which of the following statements is correct?

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 :

Which of the following pairs of elements might form an alloy?

How is the pure liquid separated from a mixture obtained by vapour distillation?

$A$ mixture of sand and iodine can be separated by

Given below are two statements:
Statement $I :$ $A$ mixture of chloroform and aniline can be separated by simple distillation.
Statement $II :$ When separating aniline from a mixture of aniline and water by steam distillation,aniline boils below its boiling point.
In the light of the above statements,choose the most appropriate answer from the options given below.