GS PrelimsScience and TechnologyGeneral Science2001

When water is heated from 0°C to 10°C, its volume

A

increases

B

decreases

C

does not change

D

first decreases and then increases

Correct Answer: Option D

Explanation

1. The question describes the change in volume of water when heated from 0°C to 10°C. 2. Water exhibits anomalous behavior regarding its density and volume between 0°C and 4°C. 3. As water is heated from 0°C (ice point), its density increases, meaning its volume decreases. This continues until it reaches its maximum density (minimum volume) at approximately 4°C. 4. Upon further heating from 4°C up to 10°C (and beyond, until boiling), water behaves normally, meaning its density decreases and its volume increases. 5. Therefore, when water is heated from 0°C to 10°C, its volume first decreases (from 0°C to 4°C) and then increases (from 4°C to 10°C).

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