Mosquitoes can float on water. Which of the following phenomenon is responsible for this?
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Buoyancy
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Viscocity
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Capillarity
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Surface tension
D
Correct answer
Explanation
Mosquitoes can walk on water due to surface tension - the cohesive forces between water molecules creating a 'skin' that supports their light weight. Their leg oils and tiny foot weight distribution enhance this effect. Buoyancy helps floating objects, viscosity affects fluid flow resistance, and capillarity involves liquid rise in narrow tubes, but only surface tension explains walking on water.