11th Class Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन

  • question_answer 18)
    Giving examples differentiate between calcinations and roasting.

    Answer:

     
      Calcinations Roasting
    (i) Calcination is carried in the absence of air or oxygen. Roasting is carried in the presence of excess of air.
    (ii) As a result of calcinations, the carbonate ore is converted to the oxide from. As a result of roasting, the sulphide ore is converted to the oxide form
     


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