Question

WILL MARK AS BRAINLIEST

__________ and __________ for a given substance occur at the same temperature.

A.Melting, freezing
B.Melting, boiling
C.Freezing, evaporation
D.Boiling, freezing

Answer 1

The correct answer is A.

Take the example of water.

For water, freezing happens at 0℃. When you start cooling water, its temperature will go down till 0℃ and ice will start forming. The temperature will remain at 0℃ until all the water is converted to ice. The freezing is completed at 0℃.

When a piece of ice is kept in open, first its temperature will rise till 0℃ from subzero temperature.(sub zero temperature means minus temperature, like -5℃). Once it reaches 0℃, it will start MELTING. during melting, the temperature will remain constant at 0℃ until all ice is melted to water. So the melting process is completed at 0℃.

Thus both melting and freezing happens at 0℃.