In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?

Flow of air downward in a pipe.

Flow of liquid upward in a vertical pipe.

Flow through a converging section.

Impossible in a constant cross-section conduit.

In which of the following cases, it is possible for flow to occur from

1.	In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?
A.	Flow of liquid upward in a vertical pipe.
B.	Flow through a converging section.
C.	Flow of air downward in a pipe.
D.	Impossible in a constant cross-section conduit.
Answer» C. Flow of air downward in a pipe.

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In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?

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