1.

Assertion : Ice is less dense than liquid water. Reason: There are vacant spaces between hydrogen bonded water molecules in ice.

Answer»

If both ASSERTION and reason are true and the reason is the correct explanation of the assertion
if both assertion and reason are true but reason is not the correct explanation of the assertion
if assertion is true but reason is false
if the assertionand reason both are false

Solution :It is correct that during formation of ICE from water there are vacant SPACES between hydrogen bonded molecules of of ice. Ice has a cage LIKE structure. Due to this reason Ice is less dense than liquid water. Hence both assertion and reason are true & reason are the correct explanation of assertion.


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