Question

The density of water is maximum at …………… °C and is …………… kg/m3 (a) 0, 1 (b) 0, 1000 (c) 4, 1 (d) 4, 1000

  • Category: Upthrust in Fluids Archimedes' Principle and Floatation Class 9 ICSE
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Answer

(d) 4, 1000

Reason — Due to anomalous expansion of water, when cooled it first contracts in volume but below 4°C, it starts expanding and continues to do so till the temperature reaches 0°C, the point at which it freezes into ice. Thus, The density of water is maximum at 4°C and is 1000 kg/m3.

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