Question

The advantage of alcohol as thermometric liquid is due to its

• A. Low boiling point.
• B. Low freezing point.
• C. High vapour pressure.
• D. All the above.

Answer 1

The correct option is B

Low freezing point.

Explanation

1. Since, alcohol have very low freezing point ($-{130}^{0}C$), it can be used to record very low temperature.
2. Alcohol has greater value of temperature coefficient of expansion than mercury.
3. Therefore, alcohol is used as thermometric liquid in situations where we need to measure very low temperature.

Hence, option (B) is the correct answer.