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BITSAT 2020 Solved Question Paper

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Question : 68

Total: 150

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25°C. For this process, which of the following statement is correct?

The adsorption requires activation at 25°C
The adsorption is accompanied by a decrease in enthalpy
The adsorption increases with increase of temperature
The adsorption is irreversible

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