Choose the correct statement of the following
(a) conversion of solid into vapours without passing through the liquid
state is called vapourisation.
(b) conversion of vapours into solid without passing through the liquid
state is called sublimation.
(c) conversion of vapours into solid without passing through the liquid
state is called freezing.
(d) conversion of solid into liquid is called sublimation.
NCERT Class IX
Sciences - Exemplar Problems
Chapter 1. Matter in our Surroundings
Answers
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Correct Statement: (b) conversion of vapours into solid without passing through the liquid state is called sublimation
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Conversion of vapours into solid without passing through the liquid state is called sublimation, is the correct statement.
Option (b)
Explanation:
- Sublimation is a process in which a solid is changed into vapors and vice versa without passing through the liquid state. For example, naphthalene balls, camphor, potash alum, etc.
- Vaporization is process in which liquid is changed into the vapour state.
- Freezing is transformation of liquid state into a solid-state.
Learn more about sublimation
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