Hydrogen Two Marks Question

11th Standard

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Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  1. Explain why hydrogen is not placed with the halogen in the periodic table.

  2. Discuss the three types of Covalent hydrides.

  3. NH3 has exceptionally high melting point and boiling point as compared to those of the hydrides of the remaining element of group 15. Explain.

  4. What is para hydrogen?

  5. Write short notes on Deuterium.

  6. How is deuterium prepared from heavy water?

  7. Explain the large scale production of Hydrogen.

  8. What happens when steam is passed over hot iron.

  9. Explain the reaction of water with halogens.

  10. Ice floats on water. Give reason

  11. Give example of a reaction where H2 acts as a reducing agent.

  12. How does D2 react with O2,and halogen? Write balanced equation.

  13. Mention the use of H2 in metallurgy,

  14. How would you prepare Hydrogen peroxide?

  15. H2O2 is always stored in plastic bottles. Why?

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