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(i) white phosphorus (ii) red phosporus ...

(i) white phosphorus (ii) red phosporus and (iii) balck phosphorus. Write the difference between white red and black phosphorus on the basis of their structure and reactivity.
Phosphorus has three allotropic forms __

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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Questions From Board Examinations
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  6. Assign reason for the following : (i) H(3)PO(2) is a stronger reduci...

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  7. ON adding NaOH to ammonium sulphate, a colourless gas with pungent odo...

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  8. Considering the parameters such as bond dissociation enthalpy, electro...

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  9. Write the conditions to maximize the yield of H(2)SO(4) by contact pro...

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  10. Arrange the following in increasing order of the property indicated : ...

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  11. (a) Write the laboratory method for the preparation of HNO(3). (b) W...

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  12. Describe the manufacture of sulphuric acid by contact process on the b...

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  13. (i) Why is concentrated H(2)SO(4) always diluted by adding H(2)SO(4) t...

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  14. What happens when (i) Orthophorus acid is heated ? (ii) XeF(6) und...

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  15. Write the disproportionation reaction of that oxoacid of nitrogen in w...

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  16. Electron gain enthalpies of halogens are largely negative. Explain.

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  17. Why is N(2)O(5) more acidic than N(2)O(3) ?

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  18. H(3)PO(2) acts as a monobasic acid. Explain.

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  19. Give reasons : (a) H(3)PO(3) undergoes disproportination reaction bu...

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  20. (i) white phosphorus (ii) red phosporus and (iii) balck phosphorus. Wr...

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