See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

     2 H O 2 2 2 2 2 Ice cold Na O 2H O 2NaOH H O P Q       Room 2 2 2 2 temperature 2Na O 2H O 4NaOH O P R     Hence, 1 2 M M 34 32 33 2 2    