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NDA 1 2024 GAT, question 100

Topic: Chemistry

Q100

Which one among the following statements with reference to the properties of water is not correct ?

  1. (a) The specific heat of water is abnormally high.
  2. (b) Latent heat of fusion of water is very low.Correct answer
  3. (c) Density of water is higher than ice.
  4. (d) Pure water is a non-conductor of electricity.

Solution.

Answer: (b) Latent heat of fusion of water is very low.

  1. Water has a relatively high latent heat of fusion, about 334 kJ/kg, so the claim that it is very low is incorrect.
  2. Its high specific heat and liquid density exceeding ice are familiar properties.
  3. Pure water is a very poor conductor; the textbook term non-conductor is an approximation, not exactly zero conductivity.