Which one of the following is not correct?

  • A
    Pyrophosphoric acid is a tetrabasic acid
  • B
    Pyrophosphoric acid contains $P-O-P$ linkage
  • C
    Pyrophosphoric acid contains two $P-H$ bonds
  • D
    Orthophosphoric acid can be prepared by dissolving $P_4O_{10}$ in water

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Which of the following statements is correct for $N_2O_4$?

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Give the preparation of phosphorus trichloride and phosphorus pentachloride.

Which of the following reaction products are represented correctly?
$(a)\ P_4 + 3NaOH(dil) + 3H_2O \to PH_3 + 3NaH_2PO_2$
$(b)\ 3Br_2 + 6NaOH(conc) \to 5NaBr + NaBrO_3 + 3H_2O$
$(c)\ NCl_3 + 3H_2O \to NH_3 + 3HOCl$
$(d)\ I_2 + 2NaOH \to NaI + NaOI + H_2O$
$(e)\ Al_4C_3 + 12H_2O \to 4Al(OH)_3 + 3CH_4$
$(f)\ N_2O_4 + H_2O \to HNO_3 + HNO_2$
$(g)\ NH_4NO_3 + NaOH \to NH_3 + NaNO_3 + H_2O$
Correct options are:

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