Chemistry
2025 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CY 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 37–39 of 65. Imported answers require review unless explicitly marked reviewed.
Question 37
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The homogeneous catalyst whose metal ion does NOT undergo either oxidation or reduction in any of the steps during the hydrogenation of terminal olefins is
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The given zirconocene compound, (η⁵-Cp)₂ZrEt₂, when heated in the presence of an equimolar amount of PMe₃ results in the formation of a compound X which obeys the 18 electron rule. The reaction also resulted in the release of a saturated hydrocarbon.
[Given: Atomic number of Zr = 40]
The structure of compound X is
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 39
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The ¹H NMR spectrum of the given iridium complex at room temperature gave a single signal at 2.6 ppm, and its ³¹P NMR spectrum gave a single signal at 23.0 ppm. When the spectra were recorded at lower temperatures, both these signals split into a complex pattern. The intra-molecular dynamic processes shown by this molecule are
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