Correct Answer: Option B

Explanation

A mercury barometer is a barometer in which the weight of a column of Mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of Mercury at the base of the Mercury column with the height of the column varying with atmospheric pressure

• divide y^3-y-7 7y^2 by (-1 y^2) Answer this

  0 Answers   ·   1 hour ago
• A characteristic of vertebrate that is unique to mammals is A. the presence of pentadactyl limbs B. parental care C.... Answer this

  3 Answers   ·   Biology   ·   4 months ago
• When was the first stadium established? Answer this

  1 Answers   ·   Current Affairs   ·   4 hours ago