creative two marks

12th Standard EM

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Chemistry

Use blue pen only
Time : 00:20:00 Hrs
Total Marks : 20

    Part - A

    Answer all of the following questions

    10 x 2 = 20
  1. What is metallurgy?

  2. Why should we have a ecofriendly metallurgical process?

  3. Name some elements that occur as native elements.

  4. What is meant by concentration?

  5. Can the same method of extraction be used for all metals

  6. Name some common methods of ore concentration.

  7. Name the two steps involved in the extraction of crude metal

  8. Name some reducing agents used to convert Metal oxides to metal

  9. Name the metals that are obtained from their oxides using hydrogen as reducing agent.

  10. Name the various refming process

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TN 12th Standard EM Chemistry free Online practice tests

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