The incorrect statement(s) among (a) - (c) is (are) :-


The incorrect statement(s) among (a) - (c) is (are) :-

(a) W(VI) is more stable than $\mathrm{Cr}(\mathrm{VI})$.

(b) in the presence of $\mathrm{HCl}$, permanganate titrations provide satisfactory results.

(c) some lanthanoid oxides can be used as phosphors.

  1. (a) and (b) only

  2. (a) only

  3. (b) and (c) only

  4. (b) only

Correct Option: , 4


$\mathrm{KMnO}_{4}$ will not give satisfactory result when it is titrated by $\mathrm{HCl}$.

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