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When phosphorus reacts with caustic soda...

When phosphorus reacts with caustic soda, the products are `PH_(3) and NaH_(2)PO_(2)` This reaction is an example of:

A

Oxidation

B

Reduction

C

Oxidation and reduction

D

Neutralisation

Text Solution

Verified by Experts

The correct Answer is:
C
`3NaOH+P_(4)+3H_(2)O to PH_(3) +3NaH_(2)PO_(2)`
This reaction involves simultaneous oxidation and reduction of P (oxidation of P to `NaH_(2)PO_(2)` and reduction to `PH_(3)`).
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DINESH PUBLICATION-THE NITROGEN FAMILY-Selected straight objective type
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  2. White phosphorus (P4) has

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  3. When phosphorus reacts with caustic soda, the products are PH(3) and N...

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  4. Which of the following does not give NO2 on heating?

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  5. A gas that cannot be collected over water is.

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  6. Bonds present in N2 O5 are.

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  7. The electronegativity of the following elements increases in the order

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  8. Which of the following oxide of nitrogen is a coloured gas?

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  9. Among the trihalides of nitrogen, which is the least basic ?

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  10. The lightning bolts in the atmosphere causes the formation of nitric o...

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  11. Concentrated HNO(3) reacts with iodine to give:

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  12. Which one of the following is the strongest base ?

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  13. The oxidation state of phosphorus in Ba(H2 PO2)2 is

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  14. Amongst the following elements whose electronic configuration are give...

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  15. Nitrogen is liberated by the thermal decomposition of only

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  16. The cyanide ion CN and N(2) are isoelectronic, but in contrast to CN^(...

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  17. Among the following species, identify the isostuctural pairs NF(3). ...

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  18. In nitroprusside ion, the iron and NO exist as Fe(II) and NO^(+) rathe...

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  19. On heating ammonium dichromate, the gas evolved is :

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  20. One mole of calcium phosphine on reaction with excess of water gives

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