Chemistry
GATE CY topic:chemistry PYQs
Build your understanding with focused practice from past exam papers.
Questions 341–350 of 650. Imported answers require independent review unless marked reviewed.
Question 6
Open questionCYMCQ1 markNeeds review
The reagent(s) required for the conversion of hex-3-yne to (E)-hex-3-ene is/are:
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Open questionCYMCQ1 markNeeds review
An organic compound exhibits the [M]⁺, [M+2]⁺ and [M+4]⁺ peaks in the intensity ratio 1:2:1 in the mass spectrum, and shows a singlet at δ 7.49 in the ¹H NMR spectrum in CDCl₃. The compound is:
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Reaction of LiAlH₄ with one equivalent of Me₃N·HCl gives a tetrahedral compound, which reacts with another equivalent of Me₃N·HCl to give compound N. The compound N and its geometry, respectively, are:
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Which one of the following is a non-heme protein?
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A correct example of a nucleotide is:
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Open questionCYMCQ1 markNeeds review
The equilibrium constant for the reaction
3 NO (g) ⇌ N₂O (g) + NO₂ (g)
at 25 °C is closest to:
[ΔG° = −104.18 kJ; R = 8.314 J mol⁻¹ K⁻¹]
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Open questionCYMCQ1 markNeeds review
The reaction of NiBr₂ with two equivalents of PPh₃ in CS₂ at −78 °C gives a red-colored diamagnetic complex, [NiBr₂(PPh₃)₂]. This transforms to a green-colored paramagnetic complex with the same molecular formula at 25 °C. The geometry and the number of unpaired electrons in the green-colored complex, respectively, are:
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The rate of the substitution reaction of [Co(CN)₅Cl]³⁻ with OH⁻ to give [Co(CN)₅(OH)]³⁻
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Open questionCYMCQ1 markNeeds review
The Δ₀ of
[Cr(H₂O)₆]³⁺, [CrF₆]³⁻ and [Cr(CN)₆]³⁻
follows the order:
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Open questionCYMSQ1 markNeeds review
The phase diagram of CO₂ is shown below:
The correct statement(s) about CO₂ is/are:
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