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Phosphorus on reaction with NaOH produce...

Phosphorus on reaction with NaOH produces `PH_(3)` and `NaH_(2)PO_(2)`. This reaction is an example of

A

Oxidation

B

Reduction

C

Disproportionation

D

Neutralisation

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The correct Answer is:
C
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Redox is a reaction in which both oxidation and reduction will take place simultaneously . It is obvious that if one substance gives electron there must be another substance to accept these electrons . In some reactions, same substance is reduced as well as oxidised, these reactions are termed as disproportionation reactions. For calculating equivalent mass in redox reaction change in oxidtaion number is realted to n-factor which is reciprocal of molar ratio. When P reacts with NaOH, the products are PH_(3) and NaH_(2)PO_(2) which of the following statement is correct ?

Reaction of Zn(OH)_(2) with NaOH produces:

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AAKASH INSTITUTE ENGLISH-REDOX REACTIONS-Assignment (Section A) (Objective type Questions (one option is correct))
  1. A redox reaction is:

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  2. The reaction H(2)S+H(2)O(2)toS+2H(2)Omanifests

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  3. Phosphorus on reaction with NaOH produces PH(3) and NaH(2)PO(2). This ...

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  4. The conversion of K(2)Cr(2)O(7) into Cr(2)(SO(4))(3) is

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  5. In this reaction 2Na(2)S(2)O(3)+I(2) to Na(2)SO(4)O(6)+2NaI(2) ,NaI(2)...

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  6. The oxidation number of nitrogen in NH(2)OH is :

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  7. When KMnO(4) is reduced with oxalic acid in acidic solution, the oxida...

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  8. In which of the following reactions the underlined substance is oxidis...

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  9. The oxidation state of phosphorus vary from

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  10. In which of the following reactions, the underlined element has decrea...

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  11. A metal ion M^(3+) loses three electrons , its oxidation number will b...

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  12. In which one of the following changes there are transfer of five elect...

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  13. The oxidation states of the most electronegative elements in the produ...

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  14. The oxidation number of chlorine in HOCl is

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  15. In the reaction :Cl(2)+OH^(-)rarrCl^(-)+ClO(4)^(-)+H(2)O

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  16. The oxidation number of P in Mg(2)P(2)O(7) is

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  17. For the redox recation MnO(4)^(-)+C(2)O(4)^(2-)+H^(+)toMn^(2+)+CO(2)...

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  18. Oxygen has an oxidation state of +2 in

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  19. A compound contains three elements A,B and C, if the oxidation number ...

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  20. In which of the following pairs. the oxidation states, of sulphuric an...

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