MCQ
With reference to Haber's process, the required catalyst used is:
- AIron oxide.
- BAluminium oxide.
- CMagnesium oxide.
- ✓All of the above.
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$\left( C _6 H _5\right)_3 C - Cl \frac{ OH ^{-}}{\text {Pyridine }}\left( C _6 H _5\right)_3 C - OH$
