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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Among $Co ^{3+}, Ti ^{2+}, V ^{2+}$ and $Cr ^{2+}$ ions, one if used as a reagent cannot liberate $H _{2}$ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is $......B.M$. (Nearest integer)
Among $Co ^{3+}, Ti ^{2+}, V ^{2+}$ and $Cr ^{2+}$ ions, one if used as a reagent cannot liberate $H _{2}$ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is $......B.M$. (Nearest integer)
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The set having ions which are coloured and paramagnetic both is :
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