Question

Mercury is used in thermometers to measure temperature because:

• A. It changes color with temperature
• B. It expands or contracts with temperature
• C. It changes state with temperature
• D. All of the above

Answer 1

Answer: (A), (B), (D)

The correct options are
A

It changes color with temperature

B

It expands or contracts with temperature

D

All of the above

Mercury, being a metal is a good conductor of heat and remains liquid at room temperature and can flow. So, as the temperature of mercury increase, it expands and the length of mercury column increase. Also, it is shiny (so easily visible) and does not stick on the walls of test-tube and multiple readings can be taken in short time.