In a barometer mercury is preferred over water because? – McqOptions

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1.	In a barometer mercury is preferred over water because?
A.	Mercury is available in pure form
B.	Mercury has high density and low vapour pressure
C.	Mercury is shining and therefore its level can be read easily
D.	Mercury is a good conductor of heat
Answer» C. Mercury is shining and therefore its level can be read easily

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