Question

Ramesh has three samples of substance: ice, camphor, and water. He wants to change ice into water, camphor into gas, and water into vapours. Which processes should he follow for these conversions?

$\begin{array}{ccc}\text{Ice to water}& \text{Camphor to gas}& \text{Water to vapour}\end{array}$

• A. $\begin{array}{ccc}\text{Freezing}& \text{Deposition}& \text{Melting}\end{array}$
• B. $\begin{array}{ccc}\text{Condensation}& \text{Melting}& \text{Freezing}\end{array}$
• C. $\begin{array}{ccc}\text{Melting}& \text{Evaporation}& \text{Condensation}\end{array}$
• D. $\begin{array}{ccc}\text{Melting}& \text{Sublimation}& \text{Boiling}\end{array}$

Answer 1

The correct option is D $\begin{array}{ccc}\text{Melting}& \text{Sublimation}& \text{Boiling}\end{array}$

Melting is the process by which solid changes into liquids. Example - Ice can be converted to water by the process of melting.
Sublimation is the process by which solid changes into gas. Example - Camphor can be converted to gas by the process of sublimation.
Boiling is the process by which liquid changes into vapours. Example - Water can be converted to vapour by the process of boiling.