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(A) : White P reacts with caustic soda, ...

(A) : White P reacts with caustic soda, the products are `PH_(3)` and `NaH_(2)PO_(2)`. This is reaction is an example of disproportionation reaction.
(R) : In disproportionation reaction one and the same substance may act simultaneously as an oxidising agent and as a reduced agent.

A

Both A and R are true and R is the correct explanation

B

Both A and R are true but R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true

Text Solution

Verified by Experts

The correct Answer is:
A
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AAKASH SERIES-STOICHIOMETRY-OBJECTIVE EXERCISE - 1
  1. Fluorine does not undergo disproportiona tion because

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  2. In the reaction, 2HgOrarr2Hg+O(2),Hg^(2+) act as

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  3. (A) : White P reacts with caustic soda, the products are PH(3) and NaH...

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  4. PbS+4H(2)O(2)rarrPbSO(4)+4H(2)O. In this reaction PbS undergoes

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  5. The mass ofCO(2) obtained when 2g of pure limestone is calcined is

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  6. The number of moles of CO(2) produced when 3 moles of HCl react with e...

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  7. The weight of a pure sample of KCIO(3) to be decomposed in order to ge...

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  8. 6g of Mg reacts with excess of an acid. The amount of hydrogen produce...

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  9. The number of moles of Fe(2)O(3) formed when 5.6 lit of O(2) reacts wi...

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  10. What volume of H(2) at NTP is required to convert 2.8g of N(2) in to N...

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  11. The number of grams of NaOH that completely neutralises 9.8g of phosph...

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  12. The volume of CO(2) obtained by the complete decomposition of one mole...

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  13. A peroxidase enzyme contains 2% selenium (Se=80). The minimum molecula...

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  14. The amount of Mg in gms. to be dissolved in dilute H(2)SO(4) to libera...

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  15. The mass of 80% pure H(2)SO(4) required to completely neutralise 60g o...

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  16. Haemoglobin contains 0.33% iron (Fe=56). The molecular weight of haemo...

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  17. The volume of CO(2) formed when 1 litre of O(2) reacted with 2 lit of ...

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  18. The number of molecules of CO(2) liberated by complete combustion of 0...

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  19. The weight of oxygen required to completely react with 27g  of Al is

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  20. The vapour presssures of pure benzene and toluene are 160 and 60 mm Hg...

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