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Water shows its minimum volume (maximum density) at a temperature of:
A4 °C
B0 °C
C10 °C
D100 °C
Answer & Solution
Correct answer: A. 4 °C
1. Between 0 °C and 4 °C water contracts on heating instead of expanding.
2. At 4 °C its volume is minimum, so its density is maximum.
3. Above 4 °C water expands normally on heating.
4. Hence the answer is 4 °C.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 5 "Heat", p.73_
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