Question

The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason?(a) Ice is a bad conductor of heat(b) Since the surface of the lake is at the same temperature as the air, no heat is lost(c) The density of water is maximum at 4°C(d) None of the statements (a), (b) and (c) given above is correct.

Answer 1

hey mate........the answer is

(c) The density of water is max at 4°C

Answer 2

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C

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