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Question : Demonstrate an experiment to prove osmosis.

Answer»

Solution :Thistle funnel EXPERIMENT :
(i) Mouth of a thistle funnel is tied with goat bladder. It acts as a semipermeable membrane.
(ii) Pour CONCENTRATED SUGAR solution in the thistle funnel and mark the level of solution.
(iii) PLACE this in a beaker of water. After some time water level in the funnel RISES up steadily.
(iv ) This is due to the inward diffusion of water molecules through the semipermeable membrane .


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