Verified Solution • 2025–26 Session moderate

QJEEM20Che540: JEE Main 2020 Chemistry - Class 12 JEEM20Che540 Solution: The incorrect statement(s) among (a) - (c) is (are) (a) W(VI)…

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.

Multiple Choice Options

  • A (a) and (b) only
  • B (a) only
  • C (b) only
  • D (b) and (c) only

Step-by-Step Verified Solution

W(VI) is more stable than Cr(VI)

Permanganate titrations in presence of HCl are unsatisfactory as HCl is oxidised to Cl2

Lanthanoid oxides are used as phosphors.

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