Question

at 3• 98° C ( nearly 4° C ), water has a special property .What is this?

a) density is maximum
b) volume is maximum
c) density is minimum
d) none of these


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Answer 1

Answer:

a) density is maximum

Explanation:

4 ° C turns out to be the temperature at which liquid water has the highest density. If you heat it or cool it, it will expand.

Answer 2

Answer:

4 degrees C turns out to be the temperature at which liquid water has the highest density. If you heat it or cool it, it will expand. The expansion of water when you cool it to lower temperatures is unusual, since most liquids contract when they're cooled.

An interesting consequence of this peculiar feature of water is that the temperature of water at the bottom of a lake in the winter is almost always 4 degrees C, since the densest water will settle to the bottom -- if it gets any colder or warmer, it will rise. Ice floats on top of lakes, preventing evaporation (and convection in the frozen layer), and lakes stay liquid underneath, allowing fish and other life to survive.

Explanation:

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