Question

20. Statement (A): The kinetic energy of the molecule is zero when the liquid is at 0°C Statement (B): 80000 cal of heat is required for 1 kg ice at 0°C to becoming water. A) A is true B is false B) A is false B is true C) Both A and B are true D) Both A and B are false ​

Answer 1

Answer:

I think a) is correct answer

Answer 2

From the given statements A) and B),  B) A is false B is true

Explanation:

• The kinetic energy of the molecules will be zero only at absolute temperature (0K). In terms of  Celsius scale absolute temperature is at (-273°C) and not at (0°C).
• The amount of heat required for 1 kg of ice at 0°C to become water is (334 KJ). Converting kilojoules in terms of calories, we get 80000 calories.
• Hence statement A) is false and statement B) is true.