Question

what will the amount of heat required to convert 50 grams of ice at 0 degree Celsius to water at 0 degrees celsius

Answer 1

when ice is at 0° C temperature and we now rise the temperature , ice melts and forms water.
here in question, we have require to find the amount of heat required to convert 50gm of cake at 0°C to water at 0°C.
use, Heat = $mL_f$

here, m is mass of ice and $L_f$ is latent of fusion.
basically latent heat of fusion of ice = 80cal/gm
so, Heat = 50gm × 80cal/gm
= 4000cal

hence, option (b) is correct.

Answer 2

4000 cal is the amount of heat required to convert 50 grams of ice at 0 degree Celsius to water at 0 degrees Celsius.

Therefore, Option A that is 4000 cal is the correct answer.

Celsius temperature scale, also known as centigrade temperature scale, scale based on 0° for the freezing point of water and 100° for the boiling point of water.