Question

Which of the following is not a reason why mercury is preferred as a barometric liquid?

• A. Mercury has high density
• B. Mercury does not wet the glass
• C. Mercury is opaque and shiny
• D. Mercury is poisonous

Answer 1

The correct option is D Mercury is poisonous

1) It has $13.5$ times higher density than water
2) It doesn't stick to the glass walls of tube like water does.

3) It is opaque and shiny