SSC MTS EXAM

SSC

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Phase change from a solid to a gas.
A
sublimation
B
deposition
C
condensation
D
evaporation
Explanation: 

Detailed explanation-1: -Sublimation is a type of phase change that takes place when a solid turns directly into a gas, skipping the liquid phase. The opposite of sublimation is vapour deposition. The term “sublimation” only applies to a physical change of state and not to the transformation of a solid into a gas during a chemical reaction.

Detailed explanation-2: -The direct conversion of a solid to a gas, without an intervening liquid phase, is called sublimation.

Detailed explanation-3: -Sublimation is the change of state from a solid to a gas, without passing through the liquid state. Deposition is the change of state from a gas to a solid. Carbon dioxide is an example of a material that easily undergoes sublimation. The melting point is the temperature at which a solid changes into a liquid.

Detailed explanation-4: -Five substances that undergo sublimation are: ammonium chloride, iodine, camphor, naphthalene, dry ice.

There is 1 question to complete.