What is a barometer ?why mercury is used as a barometric liquid?what are the
disadvantages of simple barometer
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4
Answer:
an instrument that measures air pressure and indicates changes in weather
The disadvantages of use of mercury in a barometer is
: 1) it is bulkier in nature.
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Mercury in a barometer - result
its density is very high.
it has low vapour pressure.
its rate of evaporation is not very high.
it neither wets nor sticks to glass.
its surface is shining and opaque
Explanation:
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Answered by
1
Answer:
Barometer is an instrument used to measure atmospheric pressure.Mercury is commonly used in barometer because it's high density means the height of the column can be a reasonable size to measure atmospheric pressure.
disadvantages are-
- it's density is very high
- it has low vapour pressure.
- it's rate of evaporation is not very high.
- it's neither wets nor sticks to glass
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