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Strong reducing behaviour of H(3)PO(2) i...

Strong reducing behaviour of `H_(3)PO_(2)` is due to

A

Low oxidation state of phosphorus

B

Presence of two - OH groups and one P-H bond

C

Presence of one - OH group and two P-H bonds

D

High electron gain enthalpy of phosphorus

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The correct Answer is:
C
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Strong reducing behaviour of H_(3)PO_(4) is due to :

How do you account for reducing behaviour of H_(3)PO_(2) on the basis of its structure?

Good reducing nature of H_(3)PO_(2) is attributed to the presence of :

(a) Why does PCl_3 fume in moisture ? (b) Are all the five bonds in PCl_5 molecule equivalent ? Justify your answer. ( c) How do you account for the reducing behaviour of H_3 PO_2 on the basic of its structure ? (d) Give the disproportional reaction of H_3PO_3 .

Assertion : H_(3)PO_(2) has strong reducing property but H_(3)PO_(4) does not. Reason : P-OH bond present in H_(3)PO_(4) .

PRADEEP-P-BLOCK ELEMENTS (NITROGEN FAMILY)-NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS-I)
  1. On heating with concentrated NaOH solution in an inert atmosphere of C...

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  2. Which of the following acids forms three series of salts ?

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  3. Strong reducing behaviour of H(3)PO(2) is due to

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  4. On heating lead nitrate forms oxides of nitrogen and lead. The oxides ...

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  5. Which of the following elements does not show allotropy ?

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  6. Maximum covalency of nitrogen is ………. .

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  7. Which of the following statement is wrong ?

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  8. A brown ring is formed in the ring test for NO(3)^(-) ion. It is due t...

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  9. Elements of group 15 form compounds in +5 oxidatin state. However, bis...

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  10. On heating ammonium dichromate and barium azide separately we get

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  11. In the preparation of HNO(3), we get NO gas by catalytic oxidation of ...

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  12. The oxidation state of central atom in the aniom of compound NaH(2)PO(...

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

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  14. Write the structure of pyrophosphoric acid.

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  15. PH(3) forms bubbles when passed slowly in water but NH(3) dissolves. E...

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  16. In PCl(5) phosphorus is in sp^(3) d hybridised state but all its five ...

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

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  18. On reaction with Cl(2) phosphorus forms two types of halides 'A' and '...

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

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  20. P(4)O(6) reacts with water according to equation P(4)O(6)to4H(3)PO(3)....

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