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you don't thanks and mark us brainliest but u say that's why no answer for u I answered u 4 times
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4/a Ans:He'll observe that the pink colour due to potassium permanganate will be more in beaker A because beaker A contains hot water & we know that hot water has more molecular kinetic energy & that's why the pink color will spread more faster in beaker A
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4/b Ans:Temperature: The rate of evaporation increases with an increase in temperature.
Surface area: The rate of evaporation increases with an increase in surface area.
Humidity: The amount of water vapour present in the air is called humidity.
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