Which one of the following is an example of heterogenous catalysis

Options

(a) Oxidation of SO₂ and SO₃ by NO
(b) Hydrolysis of ethyl acetate by dilute H₂SO₄
(c) Inversion of cane suger in presence of H⁺
(d) Hydrogenation of ethylene in presence of Ni

Correct Answer:

Hydrogenation of ethylene in presence of Ni

Explanation:

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