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Red phosphorus may be prepared from whit...

Red phosphorus may be prepared from white phosphorus by :

A

adding red colour to white phosphorus

B

heating white phosphorus to red heat

C

heating white phosphorus at `250^(@)C` or at low temperature in the presence of sun light.

D

dissolving white phosphorus in `NaOH`

Text Solution

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The correct Answer is:
C
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RESONANCE-P BLOCK ELEMENTS-Exercise 2 part 2 OBJECTIVE
  1. A gaseous substance dissolve in water giving a pale blue solution whic...

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  2. White phosphorous may be removed from red phosphorus by :

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  3. Red phosphorus may be prepared from white phosphorus by :

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  4. Holme's signals produce burning gases which serve as a signal to the a...

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  5. Phosphorus trichloride, PCl(3) undergoes, hydrolysis at room temperatu...

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

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

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

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

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

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

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  13. Alkaline KIis oxidised by ozone to :

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

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  15. Identify the incorrect statement with respect to ozone.

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  16. The aqeous solution of hydrogen peroxide:

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

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

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

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

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