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p - Block Elements - II 3 Mark Creative Question Paper With Answer Key

12th Standard

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Chemistry

Time : 01:00:00 Hrs
Total Marks : 45

    3 Marks

    15 x 3 = 45
  1. What is Haber's process?

  2. Explain the reaction of ammonia with chlorine and chlorides at different conditions.

  3. Explain the structure of ammonia.

  4. Explain the commercial method of preparation of nitric acid.

  5. Name a reaction for the estimation of Ozone.

  6. Give a test for sulphate?

  7. Why do noble gases form compounds with fluorine and oxygen only?

  8. An element A occupies group number 17 and period number 2 is the most electronegative element. Element A reacts with another element B) which occupies group number 17 and period number 4 to give a compound Compound C undergoes sp3d2 hybridisation and has octahedral structure. Identify the elements a and B and the compound C. Write the reactions.

  9. Explain the characteristic properties of hydrogen halides.

  10. Discuss the anomalous nature of fluorine.

  11. Write the order of thermal stability of the hydrides of group 16 elements.

  12. Out of H2O and H2S which one has higher bond angle and why?

  13. Explain why the stability of oxoacids of chlorine increases in the order given below?
    HCIO < HCIO2 < HCIO3 < HCIO4

  14. Why CIF3 exists but FCl3 does not exist - Give reason.

  15. CIF3 molecule has aT-shaped structure and not a trigonal planar one. Why?

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