Consider three P, Q, R, salts among them P and Q salts have different cations annd also have different coloured polyatomic anion due to charge transfer phenomenon while P and R salts have same cation but have different anions. Salts R decomposes into an acidic gas an a basic gas.
Q. Salt P decomposes on heating into a coloured solid, neutral gas a neutral vapour, then which of the following can not be the product of salt P after decomposition?

Options

A. `N_(2)`
B. `Cr_(2)O_(3)`
C. `I_(2)`
D. `H_(2)O`

Answer

C

Explanation

Salt 'P' can be `(NH_(4))_(2)CrO_(4)`:
`underset(("Orange"))((NH_(4))_(2)CrO_(7)) overset(Delta)to underset(("Neutral gas"))(N_(2))+underset(("Coloured solid"))(Cr_(2)O_(3))+underset(("Neutral vapours"))(H_(2)O)`