10th Class Science Metals and Non-metals Question Bank 10th CBSE Science Metals and Non-metals

  • question_answer     What happens when  (a)  is heated in the absence of oxygen? (b) a mixture of  and  is heated?  

    Answer:

                      (a) Zinc oxide and carbon dioxide are produced. Moisture and volatile impurities are also expelled out during the process of calcination. (1) (b) Copper metal and sulphur dioxide gas are produced.  (1)


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