The incorrect statement(s) among (a) – (c) is (are) : (A) W(VI) is more stable than Cr(VI). (B) in the presence of HCl, permanganate titrations provide satisfactory results. (C) some lanthanoid oxides

Question

The incorrect statement(s) among (a) – (c) is (are) : (A) W(VI) is more stable than Cr(VI). (B) in the presence of HCl, permanganate titrations provide satisfactory results. (C) some lanthanoid oxides can be used as phosphors. 4

(A) (A) only
(B) (B) and (C) only
(C) (A) and (B) only
(D) (B) only

Prashant Kotian · Accepted Answer

Correct answer: D) (B) ONLY. KMnO will not give a satisfactory result when it is titrated by HCl.

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