Question

Tincture of iodine is a mixture of two materials iodine and alcohol. One of the material has a property that its solid form can be converted directly into vapours on heating by a process called X. Identify the material that sublimes and process X?

• A. Volatile component:- Iodine X:- Distillation
• B. Volatile component:- Alcohol X:- Fractional distillation
• C. Volatile component:- Alcohol X:- Melting
• D. Volatile component:- Iodine X:- Sublimation

Answer 1

The correct option is D

Volatile component:- Iodine

X:- Sublimation

$\bullet$ The process by which a substance converts directly to the gaseous state without going through the intermediate liquid state is called sublimation and the substance which undergoes this process is called a sublimate.
$\bullet$ Volatility is a measure of the tendency of a substance to evaporate. So, a sublimate is a volatile component.
$\bullet$ Tincture of iodine is a mixture of alcohol and iodine where iodine is the volatile component and the sublimate.