White P reacts with caustic soda, the products are $\mathrm{PH}_3$ and $\mathrm{NaH}_2 \mathrm{PO}_2$. This reaction is an example of

• A

  hydrolysis
• B

  reduction
• Correct answer
  C

  disproportionation
• D

  neutralisation

Solution

This reaction is an example of disproportionation reaction, ie, the reaction in which oxidation and reduction take place simultaneously.

Hence, the correct answer is option: 'C'.