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Explain the following (i)H3 PO3 is a d...

Explain the following
(i)`H_3 PO_3` is a dibasic acid.
(ii) Phosphine has lower boiling point than ammonia.

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IIT-JEE PREVIOUS YEAR (CHEMISTRY)-P BLOCK ELEMENTS-Subjective Question
  1. Write two resonance structure of N2 O that satisfy the octet rule.

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  2. Write balanced equation for (i) The preparation of phosphine from Ca...

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  3. Explain the following (i)H3 PO3 is a dibasic acid. (ii) Phosphine ...

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  4. Write the balanced chemical equations for the following. Hypophospho...

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  5. Arrange the following as indicated. CO2,N2 O5, SiO2 and SO3 in the o...

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  6. Give balanced equations for the following : Phosphorous reacts with ...

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  7. "The valency of oxygen is generally two, whereas sulphur shows valency...

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  8. Explain the following in one or two sentences.

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  9. Write balanced equations for the following : (i) Phosphorus is react...

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  10. Complete and balance the following reactions. (i) S + OH^(-) rarr S^...

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  11. Write down the balanced equations for the reaction when calcium phosph...

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  12. Write the resonance structure of nitrous oxide.

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  13. Show with balanced equations what happens when the following are mixed...

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  14. Write the matched set (of three) for each entry in Column A {:(A,B,C...

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  15. Complete and balance the following reactions: i. HNO(3)+HCI rarr N...

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  16. Explain why 'orthophosphoric acid, H3 PO4, is tribasic but phosphorus ...

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  17. Give the structural formula for the following : (i) Phosphorous acid...

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  18. (a) Sulphur melts form a clear mobile liquid at 119^@ C but on further...

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  19. Explan the following in not more than two sentances : (i) Concentrat...

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  20. Write the balanced equation for the reaction of the following compound...

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