Question

Statement (A): The amount of heat required to convert Igm of Ice at 0°C in to water is 540Cal 11 Statement (B): The amount of heat required to convert Igm of water at 100°C in to vapour is 540Cal
A) Both A and B are true
B) Both A and B are false
C) A is true, But B is false
D) A is false. But B is true​

Answer 1

Answer:

Statement (A): The amount of heat required to convert Igm of Ice at 0°C in to water is 540Cal 11 Statement (B): The amount of heat required to convert Igm of water at 100°C in to vapour is 540Cal

A) Both A and B are true

B) Both A and B are false

C) A is true, But B is false

D) A is false. But B is true

Answer 2

B) Both A and B are false

Explanation:

Latent heat of fusion for ice

L1 = 80×4.18×10³J/kg = 80×4.18J/g = 334.4J/g

Latent heat of vaporisation for water

L2 = 536×10³×4.18J/kg = 536×4.18J/g = 2240.48J/g

Q1 = m×L1 = 1×334.4 = 334.4J

q2 = m×L2 = 1×2240.48 = 2240.48J

Q2 >Q1