Mercury is a better barometric fluid than water because
i. it needs no colouring
ii. its density is many times greater than that of water
iii. it does not wet glass
iv. it has a high vapour pressure
v. it has a high boiling point.
Which of the above statements are true?
i and ii only
i, ii and iii only
iii and iv only
iv and v only
iii, iv and v only
Correct answer is B
The advantages of use of mercury in a barometer are :