Question

Assertion : All alkali metals do not form superoxides as one of the main products in excess of air on heating.
Reason : Superoxide reacts with carbon monoxide producing a white powder and liberating dioxygen.
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer 1

Correct Answer - C
Assertion `:` Bigger cations form super oxides as they are stabilised by bigger anion, `i.e., O_(2)^(-)` through crystal lattice effect.
Reason `: KO_(2)+CO rarr K_(2)CO_(3),`
`4KO_(2)+2CO_(2) rarr 2K_(2)CO_(3)(s) +3O_(2)(g)`