Question

Which of the following phase changes only occurs in solids possessing vapor pressures above atmospheric pressure and at ambient temperature?
a. Condensation
b. Melting
c. Sublimation
d. Deposition

Answer 1

Answer: The phase change process in which solids gets converted to gases is sublimation.

Explanation:

For the given options:

Option a:  Condensation

It is a type of process in which phase change occurs from gaseous state to liquid state at constant temperature.

$Gas\rightleftharpoons Liquid$

Option b:  Melting

It is a type of process in which phase change occurs from solid state to liquid state at constant temperature.

$Solid\rightleftharpoons Liquid$

Option c:  Sublimation

It is a type of process in which phase change occurs from solid state to gaseous state without passing through the liquid state at constant temperature.

$Solid\rightleftharpoons Gas$

Option d:  Deposition

It is a type of process in which phase change occurs from gaseous state to solid state without passing through the liquid state at constant temperature.

$Gas\rightleftharpoons Solid$

Hence, the phase change process in which solids gets converted to gases is sublimation.