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The pair in which phosphours atoms have ...

The pair in which phosphours atoms have a formed oxidation state of `+3` is

A

Orthophosphorous and hypophosphoric acids

B

Pyrophosphorous and pyrophosphoric acids

C

Orthophosphorous and pyrophosphorous acids

D

Pyrophosphorous and hypophosphoric acids

Text Solution

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The correct Answer is:
C
Phosphorous acid contain P in `+3` oxidation state.
Acid Formala Oxidation state of Phosphorous
Pyrophosphorous acid `H_(4)P_(2)O_(5)" "+3`
Pyrophosphoric acid `H_(4)P_(2)O_(7)" "+5`
Orthophosphorous acid `H_(3)PO_(3)" "+3`
Hypophosphoric acid `H_(4)P_(2)O_(6)" "+4`.
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DISHA PUBLICATION-THE P-BLOCK ELEMENTS (GROUP 15, 16, 17 & 18)-Exercise
  1. Which intermolecular force is most responsible in allowing xenon gas t...

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  2. The non-metal that does not exhibit posittve oxidation state is:

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  3. The pair in which phosphours atoms have a formed oxidation state of +3...

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  4. The least number of oxyacids are formed by:

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  5. The geometry of XeOF(4) by VSEPR theory is :

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  6. Which of the following halide does not hydrolyse

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  7. NO is purified by

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  8. If phosphorous acid is allowed to react with sufficient quantity of KO...

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  9. Which one of the following pairs is obtained on heating ammonium dichr...

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  10. Nitrogen reacts with calcium and carbon or when N2 gas is passed over ...

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  11. Which of the following compound had a P-P bond ?

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  12. P(2)H(4) can be romoved from phosphine containing traces of it

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  13. The dipoles moment of NF(3) is less than NH(3) because

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  14. Which one is incorrect

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  15. When orthophosphoric acid is heated to 600^(@)C the product formed is

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  16. PCl(3) reacts with water to form :

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  17. Nitrogen is relatively inactive element because

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  18. Nitrogen dioxide cannot be prepared by heating :

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  19. The number of hydrogen atoms attached to phosphorus atom in hypophosph...

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  20. Which of the following statements is not correct for nitrogen ?

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