Question

To keep soft drink bottles cool, how much amount of heat is extracted out by ice?

• A. 336 J
• B. 440 J
• C. 530 J
• D. 600 J

Answer 1

The correct option is A 336 J

Ice extracts heat from bottles , and changes its state from ice (solid) to water (liquid) , and heat gained by the unit mass of a substance to convert itself from solid to liquid state is called latent heat of melting . The latent heat of melting of ice is $80cal.g^{-1}$ or $80\times 4.2=336J$ , therefore each 1 gram of ice extracts 336J of heat from the bottles to keep them cool.