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

  • question_answer
      What are physical and chemical adsorption?

    Answer:

      When accumulation of gas on solid surface occurs on account of weak van der Waals forces the adsorption is termed as physical adsorption. When gas molecules or atoms are held to the solid surface by chemical bonds the adsorption is termed as chemisorptions.


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