Question

Mixture of sand and camphor is purified by :
(A) Separating funnel
(B) Distillation
(C) Cooling
(D) Sublimation

Answer 1

As we can see that both are solids and we need to know each step in detail so we will now discuss each and every step here. As we know here both are solid so it will further get separated by the process of sublimation.

Complete step by step solution
When we talk about the mixture of sand and camphor we should know that the camphor is a waxy and flammable and further transparent solid with strong aroma. As we can see that both are solids and we need to know each step in detail so we will now discuss each and every step here . So firstly talking about separating funnels it is further made up of glass and used in separating the liquid liquid substances. It is basically used to separate the mixture which contains two immiscible liquids.
Secondly talking about the other process that is distillation so it is basically the process of separating the mixture which has a difference in boiling point. Thirdly we will discuss the process of cooling which is further used to separate the mixture in which either one of the components gets separated by evaporating. Lastly talking about the last process that is sublimation in this process the solid directly gets evaporated without changing into the liquid phase.
As we know here both are solid so it will further get separated by the process of sublimation.
Hence, for this question option D is correct.

Note
Here the mixture gets separated by cooling and gives the pure substance in and solid form which is called sublimate. Here the camphor is waxy , in the question the camphor will sublime leaving behind the sand.