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JEE Main2012Chemistryp Block Elements (Group 13 & 14)Actual

Which of the oxide groups among the following cannot be reduced by carbon?

Options

  1. ACu ₂ O , SnO ₂
  2. BCaO , K ₂ O
  3. CPbO , Fe ₂ O ₄
  4. DFe ₂ O ₃, ZnO

Correct answer

B. CaO , K ₂ O

Step-by-step solution

Ca and K are strong reducing agents, hence their oxides can not be reduced with carbon.

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