Q.

A spherical glass vessel filled with liquid is kept in uniform gravity. Horizontal surface represents meniscus of liquid. Now complete system is kept in a gravity free space. Select correct statement(s) 

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a

Finally liquid forms a drop and touches at the lowest point of vessel

b

Liquid wets the inner surface of the vessel

c

Liquid does not wet the inner surface of the vessel

d

Finally liquid spreads over the inner surface of vessel

answer is A, D.

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Detailed Solution

Liquid and glass contact angle is acute, so combination is wetting. In gravity free space, system will attain least P.E. surface energy of glass, liquid and vapour system will be become least.

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