Question

is used to make barometer

Answer 1

Answer:

Mercury

Explanation:

MERCURY is used to make barometer.

Answer 2

Mercury:

• Mercury is used to make barometer. When mercury used as a measuring liquid in a barometer, it has high density .
• Because of this property, when there is a change in pressure the change in height of the mercury in the barometer tube.
• Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum.
• Mercury has a melting point of -38.9°C and boiling point of 356.7°C , is the only metal to remain in liquid form in room temperature.
• Mercury are used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorscent lamps and other devices.
• It is also a good conductor of electricity , so it is useful components of electrical switches.
• It is also used in dental filling, battery, fluroscent lighting, paints, soaps.