Question

Alcohol is used as a thermometric liquid because

• A. It can measure the temperature below $-{39}^{o}C$
• B. It expands more than mercury
• C. It can be coloured by adding dye
• D. All the above

Answer 1

The correct option is D

All the above

1. The freezing point of alcohol is $-{100}^{o}C$, hence it can be used to record very low temperatures
2. Alcohol expands about six times more than mercury.
3. Alcohol is transparent hence it needs to be dyed to be seen through the glass.

Hence the correct option is Option D. All the above.