Question

When the ice in the frozen lake starts melting then the temperature of surrounding _________________________.Complete the sentence.
(A) Decreases
(B) Increases
(c ) Remains same
(D) None

Answer 1

Hint: The ice cube is a solid, it can be converted into liquid because the temperature of air is warmer than the ice cube. Thus by gathering heat ice particles break into smaller fragments. Here heat energy is converted into liquid water. Thus here one form of energy is converted to another form of energy.

Complete answer:
When the ice in the frozen lake starts melting, it absorbs temperature from the surrounding and thus the temperature of surrounding decreases. That is, the latent heat required for the melting of ice is taken from the surroundings. And hence, temperature decreases.
The ice cube is a solid, it can be converted into liquid because the temperature of air is warmer than the ice cube. Thus by gathering heat ice particles break into smaller fragments. Here heat energy is converted into liquid water.
That is, when ice is heated, each of the molecules acquires kinetic energy until the melting point is reached. Thus temperature decreases by absorbing heat from the surroundings.

So, the correct answer is “Option A”.

Additional Information:
The latent heat of fusion is the heat per unit mass required to change a substance from solid to liquid at the same temperature and pressure. The latent heat of vaporization is the heat per unit mass required to change a substance from liquid to vapor state without change in temperature and pressure.

Note:
When the ice in the frozen lake starts melting, it absorbs temperature from the surrounding and thus the temperature of surrounding decreases. That is, the latent heat required for the melting of ice is taken from the surroundings. And hence, temperature decreases.