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JEE Main202228 Jun 2022Morning ShiftChemistryd and f Block ElementsActual

Dihydrogen reacts with CuO to give

Options

  1. ACu OH 2
  2. BCu s
  3. CCu 2 O
  4. DCuH 2

Correct answer

B. Cu s

Step-by-step solution

CuO → H 2 Cu + H 2 O Copper oxide undergoes reduction to form elemental copper and water. This is a redox reaction. Since oxygen is removed from the CuO it is undergoing reduction. And hydrogen is getting oxidised.

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