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JEE Main202229 Jun 2022Morning ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two P - H bonds, is

Options

  1. APhosphonic acid
  2. BPhosphinic acid
  3. CHypophosphoric acid
  4. DPyrophosphorus acid

Correct answer

B. Phosphinic acid

Step-by-step solution

White phosphorus is a translucent white waxy solid. It is poisonous, insoluble in water but soluble in carbon disulphide and glows in dark (chemiluminescence). It dissolves in boiling NaOH solution in an inert atmosphere giving PH 3 . P 4 + 3 NaOH + 3 H 2 O → PH 3 + 3 NaH 2 PO 2                                                                   &#1

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