Statement I: Platinum and palladium catalyse the reaction at room temperature. Statement II: Nickel catalyses the reaction at relatively higher temperature and pressure.

Question

Statement I: Platinum and palladium catalyse the reaction at room temperature. Statement II: Nickel catalyses the reaction at relatively higher temperature and pressure. (A) Both statement I and II are correct. (B) Both statement I and II are incorrect. (C) Statement I is correct but statement II is incorrect. (D) Statement II is correct but statement I is incorrect.

Tardigrade Admin · Accepted Answer

Dihydrogen gas adds to alkenes and alkynes in the presence of finely divided catalysts like platinum, palladium or nickel to form alkanes. These metals adsorb dihydrogen gas on their surfaces and activate the hydrogen-hydrogen bond. Platinum and palladium catalyse the reaction at room temperature but relatively higher temperature and pressure are required with nickel catalyst.

Q. Statement I : Platinum and palladium catalyse the reaction at room temperature. Statement II : Nickel catalyses the reaction at relatively higher temperature and pressure.

Both statement I and II are correct.

Both statement I and II are incorrect.

Statement I is correct but statement II is incorrect.

Statement II is correct but statement I is incorrect.

Q. Statement I : Platinum and palladium catalyse the reaction at room temperature.
Statement II : Nickel catalyses the reaction at relatively higher temperature and pressure.