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The rise of water in a narrow glass capillary tube is caused mainly by the liquid property known as:

Answer: the surface tension of liquid.

A the viscosity of the liquid
B the density of the liquid
C the vapour pressure of liquid
D the surface tension of liquid

Correct answer: D. the surface tension of liquid

Explanation: Capillary rise results from surface tension together with adhesive forces between water and glass, which pull the liquid column upward.

Graph of pressure versus volume for a fixed amount of gas at constant temperature: the curve falls steeply then flattens, a hyperbola showing pressure inversely proportional to volume.

Boyle's law: at constant temperature the pressure of a fixed mass of gas is inversely proportional to its volume (P ∝ 1/V), so the P–V plot is a hyperbola — halving the volume doubles the pressure. Image: Reginaprice2013, CC BY-SA 3.0, via Wikimedia Commons.

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Discover why gases expand to fill any container while liquids flow and solids hold their shape. Master the gas laws, the ideal gas equation, and the reasons real gases deviate from ideal behavior.

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The rise of water in a narrow glass capillary tube is caused mainly by the liquid property known as:

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