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4. d and f- block elements — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Which statement is not correct
  • A
    Potassium permanganate is a powerful oxidising substance
  • ✓
    Potassium permanganate is a weaker oxidising substance than potassium dichromate
  • C
    Potassium permanganate is a stronger oxidising substance than potassium dichromate
  • D
    Potassium dichromate oxidises a secondary alcohol into a ketone
✓

Answer

Correct option: B.
Potassium permanganate is a weaker oxidising substance than potassium dichromate
b
(b)In acidic medium, $KMn{O_4}$ gives $ 5 $ oxygen while acidic ${K_2}C{r_2}{O_7}$ gives $3 $ oxygen.

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