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Q.

Which of the following statement(s) is(are) correct

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a

Red phosphorus is obtained by heating white phosphorus at 573K in an inert atmosphere for several days

b

White phosphorus is a translucent white waxy solid

c

Oxoacids of Phosphorus contain at least one  P = O bond and one POH bond

d

The major use of nitric acid is in the manufacture of ammonium nitrate for fertilizers and other nitrates for use in explosives and pyrotechnics

answer is A, B, C, D.

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Detailed Solution

  • The major use of nitric acid is in the manufacture of ammonium nitrate for fertilisers and other nitrates for use in explosives and pyrotechnics.
  • White phosphorus is a translucent white waxy solid. It is poisonous, insoluble in water but soluble in carbon disulphide and glows in dark(chemiluminescence).
  • Red phosphorus is obtained by heating white phosphorus at 573K in an inert atmosphere for several days.
  • In oxoacids phosphorus is tetrahedrally surrounded by other atoms. All these acids contain at least one P=O bond and one P–OH bond.
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