1.

Sodium peroxide which is yellow solid, when exposed to air becomes white due to the formation of

Answer»

`H_(2)O_(2)`
`Na_(2)O`
`Na_(2)O +O_(3)`
NaOH and `Na_(2)CO_(3)`

Solution :`CaCO_(3)OVERSET(DELTA)rarrunderset(("basic"))(CAO)+underset(("acidic"))(CO_(2))`


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