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A vessel is fileld with mercury to a hei...

A vessel is fileld with mercury to a height of `0.9 m`. Barometric height is `0.7 m`. mercury :

A

the vessel can be completely emptied with the aid of a siphon.

B

the vessel cannot be emptied completely with the aid of a siphon

C

the vessel can be emptied with at least `0.7 m` height of mercury remaining in the vessel

D

none of these

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The correct Answer is:
C, D
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