Multiple choice

A on reaction with ___________ and ____________ H2SO4 produces H2O2 and O2 respectively.

When a metal M is heated in excess of air, it gives two products A and B. A is pale blue in colour. B on reaction with liquid ammonia gives C. B on rection with water produces D. B  dispropotionates to A on heating at 670K.

  1. cold dilute, hot dilute

  2. cold dilute, cold concentrated

  3. cold dilute, hot concentrated

  4. hot dilute, hot concentrated

  5. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 A is Na2O2,which is a peroxide, and this is the right answer.

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