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Ortho phosphoric acid on heating above 3...

Ortho phosphoric acid on heating above `300^(@)C` gives :

A

hypophosphorus acid

B

hypophosphoric acid

C

metaphosphoric acid

D

phosphorous acid

Text Solution

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The correct Answer is:
C
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RESONANCE-P BLOCK ELEMENTS-Exercise 2 part 2 OBJECTIVE
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  2. Phosphorus trichloride, PCl(3) undergoes, hydrolysis at room temperatu...

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  3. Ortho phosphoric acid on heating above 300^(@)C gives :

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  4. 1 mol of H(3)PO(2), H(3)PO(3) and H(3)PO(4) will neutralise x mol NaOH...

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  5. The true statement for the acids of phosphorus. H(3)PO(2) H(3)PO(3) an...

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  6. Which is a set of acid salts and can react with base?

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  7. The thermal stability of the hybrides of oxygen family is in order :

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  8. Which of the following reactions does not produce oxygen ?

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  9. The gases respectively absorbed by alkaline pyrogallon and oil of cinn...

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  10. Alkaline KIis oxidised by ozone to :

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  11. Which of the following is oxidised by O(3)?

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  12. Identify the incorrect statement with respect to ozone.

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  13. The aqeous solution of hydrogen peroxide:

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  14. When H(2)S is passed through nitric acid and acidified KMnO(4) solutio...

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  15. Consider the following compounds : (i) sulpher dioxide (ii) hydrog...

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  16. When an article is bleached by SO(2) it loses its colour. The colour c...

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  17. Which of the following can convert acidified Cr(2)O(7)^(2-) to green ?

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  18. In the reaction, H(2)SO(4)+P(2)O(5)overset(Delta)to (X)+SO(3), the pro...

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  19. Bleaching action of SO(2) is due to :

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

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