The Ostwald process is used for the manufacture of: MCQ with Answer and Explanation

Explanation:
Graham's law: r ∝ 1/√M. If rA = rB, then MA = MB (at same T,P). Different gases can have same molar mass (e.g., N₂ and CO both 28).

Explanation:
Catalysts provide an alternative pathway with lower activation energy, increasing reaction rate without being consumed. They do not affect equilibrium constant or thermodynamic parameters (ΔH, ΔS). They can be solid (heterogeneous), liquid, or gas. Enzymes are liquid-phase catalysts. A catalyst does not change the position of equilibrium, only speeds up attainment.

Explanation:
Aluminium is highly reactive; its oxide cannot be reduced by carbon. Hall-Héroult process electrolyzes alumina dissolved in molten cryolite (Na₃AlF₆) using carbon anodes.