In which of these processes platinum is used as a catalyst
In which of these processes platinum is used as a catalyst
- A
Oxidation of ammonia to form $HN{O_3}$
- B
Hardening of oils
- C
Production of synthetic rubber
- D
Synthesis of methanol
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Although $\mathrm{Cr}^{3+}$ and $\mathrm{Co}^{2+}$ ions have same number of unpaired electrons but the magnetic moment of $\mathrm{Cr}^{3+}$ is $3.87$ $B.M.$ and that of $\mathrm{Co}^{2+}$ is $4.87$ $B.M.$ Why ?
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