Hydraulics & Fluid Mechanics
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

force of cohesion
force of friction
force of diffusion
force of adhesion

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Hydraulics & Fluid Mechanics
Select the correct statement

Local atmospheric pressure is always below standard atmospheric pressure
Local atmospheric pressure depends upon elevation of locality only
Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
A barometer reads the difference be-tween local and standard atmospheric pressure

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