Difference between Gas and Vapour


 
 
Concept Explanation
 

Difference between Gas and Vapour

Difference between Gas and Vapour

Usually there is no difference between gas and vapour. The term ‘vapour’ is used for those gases which exist in the liquid form at room temperature. For example, the gaseous form of water is called vapour. On the other hand, hydrogen, oxygen, nitrogen, carbon dioxide etc exist as gases at room temperature. Hence, each one of these is called a ‘gas’, not a vapour.

Sample Questions
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Question : 1

Which of the following are correct :

(a) There is no difference between gas and vapour.

(b) There is a difference between gas and vapour.

Right Option : A
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Question : 2

Which of the following is true about vapour ?

Right Option : D
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Explanation
Question : 3

Which of the following are correct :

(a) The term ‘vapour’ is used for those gases which exist in the liquid form at room temperature.

(b) The term ‘gas’ is used for those gases which exist in the liquid form at room temperature.

Right Option : A
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Explanation
 
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