Life Sciences
GATE XL topic:life-sciences PYQs
Build your understanding with focused practice from past exam papers.
Questions 881–890 of 1235. Imported answers require independent review unless marked reviewed.
Question 11
Open questionXL-PMCQ2 marksNeeds review
A coordination complex Y upon reaction with AgNO₃ solution does NOT give any precipitation. Complex Y possesses two isomers, of which one has zero dipole moment. The crystal field stabilization energy of Y is either −0.8 Δₒ or −0.8 Δₜ. The magnetic moment for Y is found to be 3.9 Bohr Magneton. The coordination complex Y is
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Open questionXL-PNAT2 marksNeeds review
A protein in denatured state (D) is in equilibrium with native state (N).
D ⇌ N
At 360 K, both N and D states are equally populated. If the standard entropy change for the reaction at this temperature ΔS° = −139 J K⁻¹ mol⁻¹, then the corresponding standard enthalpy change ΔH° for the reaction in kJ mol⁻¹ (rounded off to one decimal place) is _____.
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Open questionXL-PNAT2 marksNeeds review
The pH of a 1.0 L buffer solution containing 0.2 mol of acetic acid (CH₃COOH) and 0.3 mol of sodium acetate (CH₃COONa) is 5.0. The Kₐ of acetic acid is P × 10⁻⁵, where the numerical value of P (rounded off to one decimal place) is ____.
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Open questionXL-PNAT2 marksNeeds review
Based on molecular orbital theory, the number of paramagnetic species in the following list
N₂, N₂⁺, N₂²⁻, O₂, O₂⁺, O₂⁻ and O₂²⁻
is ____
(assume that there is no change in energy of the orbitals upon addition/removal of electrons in a molecule)
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Open questionXL-PNAT2 marksNeeds review
Given the standard reduction potentials,
and
, the standard free energy change (
) for the reaction
in kJ mol
(rounded off to one decimal place; F = 96500 C mol
), is ____Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 1
Open questionXL-QMCQ1 markNeeds review
Catalase is found exclusively in
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RAG recombinase is responsible for the formation of specific immune receptors. This process occurs in
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The example of substrate level phosphorylation in glycolysis is
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The dipeptide with least rotational barrier in the peptide bond is
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The light-harvesting pigment NOT used by Cyanobacteria for photosynthesis is
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