Question

Identify a reaction which is just opposite of Sublimation.
A. Deposition
B. Freezing
C. Vaporization
D. Condensation
E. Melting

Answer 1

Hint: Sublimation is a process in which the solid phase of a substance is directly converted to the gaseous phase without undergoing phase transition to the liquid phase. So, any process which is opposite to Sublimation will turn the substance in the gaseous phase directly into the solid phase.

Complete step-by-step answer:
Most of us would have heard of Dry Ice which is frozen $\text{C}{{\text{O}}_{\text{2}}}$ extensively used in labs and industries. Dry Ice exhibits the process of Sublimation when kept at room temperature. Frozen dry ice which is a solid below room temperature, directly converts into a gas when exposed to room temperature. This is a perfect example of Sublimation.
Among the options, Deposition is the process in which a substance in the gaseous phase is directly converted into a solid phase. A deposition is found in the formation of frost, When the temperature of the surrounding is less than the freezing point of water, the water vapour in the air is directly converted into its solid form called the frost.
So, the answer to the question is option (A)- Deposition

Note: Condensation is the process in which a substance in vapour form is directly converted into a substance in liquid form or state at a particular temperature called the dew point.
Vaporization is a process in which a substance in the liquid phase is converted into a vapour phase at a particular temperature called the temperature of vaporization.
Melting is a process in which a substance in the solid phase is converted into a substance in the liquid phase at a temperature called the melting point of a substance.
Sublimation is an endothermic process, while Deposition is an exothermic process.