Multiple choice

Water has the least volume and maximum density at what temperature?

  1. 0 °C

  2. 4 °C

  3. 100 °C

    • 4 °C
  4. 5 °C

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Generally, all liquids expand on heating but water is an exception to this rule. If water is heated, its volume gradually decreases. (This decrease in volume continues till the temperature rises to 4 °C.) At temperatures over 4 °C water starts expanding. It then keeps expanding with the further rise in temperature, till finally at 100 °C it turns into steam.