Match column I with column II. There can be more than one match.

Coloumn I	Column II
$(a)$. on heating air	$(i)$. descends
$(b)$. on cooling air	$(ii)$. expands
	$(iii)$. contracts
	$(iv)$.rises

"

As we know that air expands and rises on heating.

So, $(a)\rightarrow (ii)$ & $(iv)$

And air descends and contracts on cooling.

So, $(b)\rightarrow (i)$ & $(iii)$

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Updated on: 10-Oct-2022

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