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Write the structure of pyrophosphoric ac...

Write the structure of pyrophosphoric acid.

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KUMAR PRAKASHAN-THE P-BLOCK ELEMENTS -SECTION -D (NCERT EXEMPLAR SOLUTION) (SHORT ANSWER TYPE QUESTIONS)
  1. In the preparation of H2SO4 by Contact Process, why is SO(3) not abso...

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  2. Write a balanced chemical equation for the reaction showing catalytic ...

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  3. Write the structure of pyrophosphoric acid.

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  4. PH3 forms bubbles when passed slowly in water but NH3 dissolves. Expla...

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  5. In PCl5, phosphorus is in sffid hybridised state but all its five bond...

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  6. Why is nitric oxide paramagnetic in gaseous state but the solid obtain...

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  7. Give reason to explain why ClF3 exists but FCl3 does not exist.

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

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  9. SF6 is known but SCl6 is not. Why ?

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  10. On reaction with Cl2, phosphorus forms two types of halides 'A' and 'B...

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  11. In the ring test of NO(3) ion, Fe^(2+) ion reduces nitrate ion to nit...

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  12. Explain why the stability of oxoacids of chlorine increases in the ord...

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  13. Explain why ozone is thermodynamically less stable than oxygen ?

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  14. P4O6 reacts with water according to equation P4O6 + 6H2O to 4H3PO3. C...

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  15. White phosphorus reacts with chlorine and the product hydrolyses in th...

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  16. Name three oxoacids of nitrogen. Write the disproportionation reaction...

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  17. Nitric acid forms an oxide of nitrogen on reaction with P4O10. Write t...

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  18. Phosphorus has three allotropic forms : (i) white phosphorus (ii) ...

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  19. Give an example to show the effect of concentration of nitric acid on ...

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  20. PCl(5) reacts with finely divided silver on heating and a white silver...

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