2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-57

  • question_answer
    Adsorption of gases on solid surface is generally exothermic because:

    A) Enthalpy is positive

    B) Entropy decreases

    C) Entropy increases

    D) Free energy increases

    Correct Answer: B

    Solution :

    [b] Entropy decreases When a gas is adsorbed on solid, its entropy decreases i.e entropy factor opposes the spontaneity of the process. Hence energy factor must favour, i.e. the process is exothermic, ie. \[\Delta H\]must be -ve i.e entropy decreases


You need to login to perform this action.
You will be redirected in 3 sec spinner