NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
Railways PYQCBT 1 2016

RRB NTPC · Question 33

At what temperature will the water density be maximum? A. 0°C B. 4°C C. 39°C D. 100°C

  1. A

  2. B

  3. D

  4. C

Show answer & explanation

Answer: (B) B

Explanation

Water is densest at about 4 °C (1000 kg/m³). Below this it expands, which is why ice floats and lakes freeze from the top.