Question

Which of the following is not an advantage of using mercury as a barometric liquid.

• A. It does not affect the barometric height
• B. It gives correct reading
• C. It is easily seen due to its shiny appearance
• D. All the above

Answer 1

The correct option is D All the above

The surface of mercury is shiny and opaque. Therefore it is easily seen while taking the observation. The vapor pressure of mercury is negligible. Hence the barometric height is not affected. The mercury neither sticks nor wets the glass tube.