Question

Reason
There is expansion of water below and above $$4^\circ C.$$
Assertion
A beaker is completely filled with water at $$4^\circ C$$. It will overflow, both when heated or cooled.

Answer 1

Correct option is A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
It is known that Water has maximum density at $$4^\circ C$$. On heating above $$4^\circ C$$ or cooling below $$4^\circ C$$, density of water decreases and its volume increases. Therefore, water overflows in both the cases. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion