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Question

The commonly used catalysts for hydrogenation reactions are _________ and _________.

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

palladium, nickel

Hydrogenation reactions (addition of hydrogen to unsaturated compounds like vegetable oils) are commonly carried out using palladium or nickel as catalysts.

Hence, palladium and nickel are the correct catalysts.

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