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The contact angle between pure water and pure silver is 90°. If a capillary tube made of silver is dipped at one end in pure water, will the water rise in the capillary? 

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No. The rise of liquid in a capillary tube is given as, h = 2S*cosθ/(rρg) 

Where S = Surface tension, θ = the angle of contact between the liquid and the wall of the tube, r = radius of the radius of the capillary tube, ρ = density of the liquid and g = acceleration due to gravity. Here given that θ = 90°, hence cosθ = 0. 

∴ h = 0. 

So the water will not rise in the pure silver capillary tube.

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