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  3. 12th Class
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  5. The d-and f-Block Elements / d तथा f ब्लॉक के तत्व

12th Class Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व

  • question_answer 36)
      Indicate the steps in the preparation of: (a) K2Cr2O7 from chromite ore. (b) KMnO4 from pyrolusite ore.

    Answer:

    (i) K2Cr2O7 from chromite ore Refer to Q. No. 14 of NCERT (end exercise). (ii) KMnO4 from pyrolusite ore Refer to Q. No. 16 of NCERT (end exercise).


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