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Give reasons for the following: Bleachin...

Give reasons for the following: Bleaching by chlorine is permanent, while that by sulphur dioxide is temporary.

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R G PUBLICATION-THE p-BLOCK ELEMENTS-EXERCISE
  1. When HCI reacts with finely powdered iron, it forms ferrous chloride a...

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  2. What are interhalogen compounds? Give a method of preparation of any ...

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  3. Give reasons for the following: Bleaching by chlorine is permanent, wh...

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  4. Give reasons for the following: NH3 acts as a Lewis base.

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  5. Give reasons for the following: NO2 dimerises.

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  6. Give reasons for the following: In the reaction between HCI and powder...

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  7. Give a laboratory method of preparation of dinitrogen.

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  8. Complete the following chemcial equations: Mg+N2 overset(heat)(rarr)

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  9. Complete the following chemcial equations: Ba (N3)2 rarr …+…

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  10. Complete the following chemcial equations: (NH4)2Cr2O7 overset(heat) (...

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  11. Why HNO2 behaves as oxidising as well as reducing agent?

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  12. Give chemcial equations for the following processes: Decomposition of ...

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  13. Give chemcial equations for the following processes: Ozone oxidises le...

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  14. Give chemcial equations for the following processes: Ozone reacts with...

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  15. The formula of Inidan Salt petre is

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  16. The most stable hydride is

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  17. Maximum covalency of nitrogen is.

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  18. On heating ammonium dichromate, the gas evolved is

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  19. Nitrogen is relatively inactive element be-cause.

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  20. The laughing gas

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