If a liter of water is heated from 20 c to 50 c, what happens to its volume? a. the volume decreases. b. the volume increases. c. the volume first increases, then decreases. d. the volume first decreases, then increases.

b.The volume increases.

Explanation:

We are given that a litre of water is heated from 20 degree celsius to 50 degree celsius .

Volume of water= 1litre

Volume of  liquid is directly proportional to temperature

When volume of liquid increases then temperature is also increases .

When temperature is increases then the volume is also increases .

When temperature decreases then the volume of liquid decreases.

When temperature is increases from 20 degree celsius to 50 degree celsius then the volume of water increases.

Hence , option b is true,

Answer :b.The volume increases.

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