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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.(1) (a) and (b) only (2) (a) only (3) (b) and (c) only (4) (b) only |
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Answer» (4) (b) only KMnO4 will not give satisfactory result when it is titrated by HCl. |
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