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-p-Block elements - I — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Hydrogen gas will not reduce
  • A
    Heated cupric oxide
  • B
    Heated ferric oxide
  • C
    Heated stannic oxide
  • ✓
    Heated aluminium oxide
✓

Answer

Correct option: D.
Heated aluminium oxide
d
Aluminium oxide cannot be reduced by hydrogen even under very hot conditions because $Al$ is more reactive than $H$. While other oxides can be reduced by hydrogen as they are below hydrogen in the metal reactivity series.

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