UPPSC 2019 GS-I General science
Question

A sample of any of the following substances disappears after sometime when exposed to air like camphor, naphthalene or dry ice. This phenomenon is called:

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Sublimation

Detailed Solution:

The correct answer is “Sublimation”.

The phenomenon where a substance disappears after some time when exposed to air, such as camphor, naphthalene, or dry ice, is called Sublimation.

Sublimation is the process by which a solid changes directly into a gas without passing through the liquid phase.

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