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NEET Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Self Evaluation Test - Surface Chemistry

  • question_answer
    Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at\[25{}^\circ C\]. For this process, which of the following statement is correct?

    A) The adsorption requires activation at \[25{}^\circ C\]

    B) The adsorption is accompanied by a decrease in enthalpy

    C) The adsorption increases with increase of temperature

    D) The adsorption is irreversible

    Correct Answer: B

    Solution :

    [b] The adsorption of methylene blue on activated charcoal is an example of physiosorption which is exothermic, multilayer and does not have energy barrier.


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