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Nitric acid (conc.) oxidises phosphorus ...

Nitric acid (conc.) oxidises phosphorus to

A

`H_(3)PO_(4)`

B

`P_(2)O_(5)`

C

`H_(3)PO_(3)`

D

`H_(4)P_(2)O_(7)`.

Text Solution

Verified by Experts

The correct Answer is:
A
`P_(4)+20HNO_(3)" (conc.)"rarr 4H_(3)PO_(4)+20NO_(2)+4H_(2)O`
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MODERN PUBLICATION-CHEMISTRY OF P - BLOCK ELEMENTS-Multiple Choice Questions (Level - II) (Comprehensive Qs)
  1. Which of the following is isoelectronic pair?

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  2. Dehydration of formic acid with sulphuric acid gives

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  3. Nitric acid (conc.) oxidises phosphorus to

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  4. Pure nitrogen gas is obtained from

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  5. Calcium phosphide gets hydrolysed and give

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  6. Ozone gives brown colour with

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  7. The number of S-S bonds in sulphur trioxide trimer (S(3)O(9)) is

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  8. For H(3)PO(3) and H(3)PO(4) the correct choice is

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  9. Which of the following species has a linear shape ?

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  10. Among the following the pair in which the two species are not iso - st...

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  11. The correct order of acidic nature of oxides is in the order

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  12. Na(2)S(2)O(3) is oxidised by I(2) to

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  13. Which one statement about sulphur dioxide gas is incorrect?

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  14. The correct order of increasing bond angles in the following species i...

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  15. The paramagnetic oxides of nitrogen are

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  16. The least stable hydride of 15th group elements is

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  17. When Br(2) is treated with aqueous solutions of NaF, NaCl and NaI sepa...

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  18. Which of the following statements is not valid for oxoacids of phospho...

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  19. When Cl(2) reacts with hot and concentrated soldium, the oxidation num...

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  20. Excess of PCl(5) reacts with conc. H(2)SO(4) giving

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