Most Important Selected Qs for JEE AdvancedChemistrys Block Elements

Na ₂ O ₂ can be used

Options

ATo oxidise CO to Na ₂ CO ₃
BFor preparation of O ₂
CFor preparation of H ₂ O ₂
DFor oxygenating the air in submarines

Correct answer

D. For oxygenating the air in submarines

Step-by-step solution

aligned & Na ₂ O ₂+ CO Na ₂ CO ₃ & Na ₂ O ₂+2 H ₂ O 2 NaOH + H ₂ O ₂ & 2 Na ₂ O ₂+2 H ₂ SO ₄ 2 Na ₂ SO ₄+2 H ₂ O + O ₂ & 2 Na ₂ O ₂+2 CO ₂ 2 Na ₂ CO ₃+ O ₂ aligned

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