Question

Consider the following statements.

1. Boiling point of water is always constant.
2. Boiling point of water increases as surrounding pressure increases.
3. Boiling point of water decreases with increase in altitude.
4. Boiling point of water increases with increase in altitude

Which of these statement(s) are true?

• A. 4
• B. 2 and 3
• C. 2 and 4
• D. 1

Answer 1

The correct option is B 2 and 3

We know that the boiling point of a liquid depends on two factors:

1. Pressure
2. Altitude

As pressure increases, the boiling point of liquid increases and as altitude increases the boiling point of liquid decreases.

Therefore, boiling point of any liquid is not always constant.

Hence, statements 2 and 3 are correct.