Q.

If there were no gravity, which of the following will not be there for a fluid?

A. Viscosity
B. Surface Tension
C. Pressure
D. Upward Thrust
Answer» D. Upward Thrust
Explanation: If there is no gravity, there will not be any upward thrust to keep a liquid buoyant. Whenever a body is placed in a fluid, the fluid applies resultant up ward directional force on the body and it is called up thrust. It's numerical value which is the product of volume of the fluid displaced, density of the fluid and acceleration due to gravity at the given place. Up thrust increases with increase in acceleration due to gravity and vice versa.
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