12th Class Chemistry Surface Chemistry / सतह रसायन Question Bank 12th CBSE Chemistry Surface Chemistry

  • question_answer
      Define promoters and poisons with example.

    Answer:

      Substance which enhances the activity of a catalyst is called promoter while substance which decreases the activity of catalyst is called poison. e-g- In Haber's process molybdenum acts as promoter and carbon monoxide acts as poison for the catalyst.


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