Question

explain how gases can be liquefied ?​

Answer 1

Answer:

they can liquified by condensation

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Answer 2

We know that the spaces between the constituent particles of a gas are very large and so gases have neither definite shape nor definite volume. Thus, on applying high pressure, the constituent particles come closer, resulting in the compression of a gas. Thus, a gas can be liquefied by increasing pressure, decreasing temperature or both. 

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