Question

Consider the following statements.
1. Those substances which expand on freezing have their melting point lowered by the increase of pressure where as those substances which contract on freezing have their melting points raised by the increase of pressure.
2. The phenomenon that ice melts on application of pressure and again solidifies when the pressure is released is known as regelation.
Which of the statement(s) given above is/are correct?

• A. Only 1
• B. Only 2
• C. Both 1 and 2
• D. Neither 1 nor 2

Answer 1

The correct option is C Both 1 and 2

The substance gets their volume decreased due to application of pressure.

If substance like water expand on freezing, lower temperature is required to convert it to liquid state, and vice-versa.

Regelation is the process of melting under pressure and freezing again when the pressure is reduced. It is demonstrated by the substances which expand on freezing, like Ice.

Both Statements are correct.