Question

Which of the following is NOT a reason to avoid mercury thermometers?

• A.
  Mercury is difficult to dispose of.
• B.
  Mercury shows uniform expansion.
• C.
  Mercury impairs hearing and vision.
• D.
  Mercury deteriorates organs like the brain and kidney.

Answer 1

The correct option is B

Mercury shows uniform expansion.
The reasons to avoid mercury are as follows:

• Mercury is difficult to dispose of.
• Mercury impairs hearing and vision.
• Mercury deteriorates organs like the brain and kidney.

Whereas mercury is preferred as a liquid in thermometers because it shows uniform expansion.