Question

Assertion: Ice melts at $0^\circ$Celsius under normal condition it would melt at lower temperature under high pressure
Reason: Formation of ice is an exothermic process
A) Both assertion and reason are correct and reason is the correct explanation for assertion
B) Both assertion and reason are correct but reason is not the correct explanation for assertion
C) Assertion is correct but the reason is incorrect
D) Both assertion and reason are incorrect

Answer 1

In this question the temperature of ice at normal condition and temperature with the high pressure is said that the ice can melt at this condition. So, when water loses its energy, the individual molecules move much slower.

Complete answer:
Within a glass of water, it contains a huge amount of tiny-tiny ${H_2}O$ molecules. Each tiny molecule is moving and has little sum of energy. Freezing is a stage transition where a liquid turns within a solid when its temperature is lowered below its freezing point. It is almost always an exothermic process, meaning that as liquid changes into solid, heat and pressure are released.

As we already know that the Ice has a melting point of $0^\circ$Celsius and under this normal condition it would melt at lower temperature within the high pressure. So the Formation of ice is an exothermic process. As the release of energy takes place in it. Hence, Formation of ice is an exothermic process because water loses heat to the environment, so it is an exothermic process.

Therefore, the correct answer is option ‘A’.

Note: As when the water is located in a freezer, the water slowly loses its heat to the surrounding cold air. Then the water molecules on losing energy begin to move slowly, come closer and pack close enough to change within the ice.