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D and F Block Elements question

2020 · 4 Sep · Shift 2 · Q4
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D and F Block Elements question

2020 · 4 Sep · Shift 2 · Q4

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
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
    (a) and (b) only
  2. B
    (a) only
  3. C
    (b) only
  4. D
    (b) and (c) only
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