Q.

An ice cube is suspended in vacuum in a gravity-free hall. As the ice melts it

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a

will retain its cubical shape

b

will change its shape to spherical

c

will fall down on the floor of the hall

d

will fly up

answer is B.

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Detailed Solution

Melting of ice cube in vacuum in gravity free hall, its shape will change to spherical, as for a given volume sphere has minimum surface area, and free surface of liquid always try to reduce surface area due to surface tension.
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