Question

A mixture contains four solid compounds A, B, C, D. On heating C changes to vapour state. C can be separated from rest of the solids by
(a) crystallisation
(b) sublimation
(c) distillation
(d) filtration​

Answer 1

ANSWER:

On heating, only C changes from solid to vapor state. C can be separated from the rest in the mixture by. Sublimation is the conversion of a solid directly into vapor and subsequent condensation, without melting. ...

Answer 2

Option b) C can be separated from the rest of the solids by sublimation.

• A substance can change from solid to gas by the process of sublimation.
• In this process, the molecules gain enough kinetic energy to break the tight packaging and spread freely.
• Usually, it is difficult for a substance to break the tight bonds. Hence it results in loosened packaging which is the liquid state.
• The high absorption power of substances changes them from a solid state to a gaseous state.