Benzoic acid is an organic compound. Its crude sample can be purified by crystallisation from hot water. What characteristic differences in the properties of benzoic acid and the impurity make this process of purification suitable?

What is collected in the flask at the end in steam distillation?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(A)$ Chloroform and Aniline	$(I)$ Steam distillation
$(B)$ Benzoic acid and Naphthalene	$(II)$ Sublimation
$(C)$ Water and Aniline	$(III)$ Distillation
$(D)$ Naphthalene and Sodium chloride	$(IV)$ Crystallisation

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$:
Assertion $(A):$ $A$ simple distillation can be used to separate a mixture of propanol and propanone.
Reason $(R):$ Two liquids with a difference of more than $20^{\circ}C$ in their boiling points can be separated by simple distillation.
In the light of the above statements,choose the most appropriate answer from the options given below:

Which apparatus is used to reduce pressure in distillation under reduced pressure?

Which of the following organic compounds could not be dried by anhydrous $CaCl_{2}$?