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Q.28 Zinc is essential for the function of(A) carboxypeptidase A.(B) chlorophyll a.(C) myoglobin.(D) vitamin B12. Zinc serves as an essential cofactor for carboxypeptidase A, a key metalloenzyme involved in peptide […]

Q. 27 The standard potentials (𝐸0) for the Fe3+/Fe and Fe3+/Fe2+ couples are −0.04 Vand +0.76 V, respectively.Given: Faraday constant = 96500 C mol–1.The value for 𝐸0(Fe2+/Fe), in V, is […]

Q. 26 A non–volatile solute has a molecular weight of 180 g mol–1. Assume that the solutedoes not associate or dissociate in water, and the boiling–point constant(ebullioscopic constant) of water […]

Q. 25 Energy of the transition from 𝑛ℎ = 4 to 𝑛𝑙 = 2 for hydrogen atom is E × 103 cm–1.Given: Rydberg constant for hydrogen: 1.097 x 107 𝑚−1.Value […]

Q. 24 The CORRECT statement(s) regarding biomolecules is(are)(A) The N–terminal amino acid of a polypeptide can be identified by Edman’s reagent(phenyl isothiocyanate).(B) L–Threonine has only one chiral center.(C) Cytosine is […]

Q. 23 Addition of a few drops of concentrated HCl to an aqueous solution of CoCl2forms a dark blue complex X.The CORRECT statement(s) for this reaction is(are)(Given: Atomic number of […]

Q. 22 The CORRECT statement(s) for the given reactions is(are)(A) P is formed as the major product in reaction I.(B) P is formed as the major product in reaction II.(C) […]

Q.21 For product formation from only one type of reactant (e.g. A → product), the CORRECT match for the order of the reaction (given in Column I) with the half-life […]

Q. 20 A few species are given in Column I. Column II contains the hybrid orbitals used by the central atom of the species for bonding. The CORRECT match for […]

Q.19 Consider the two 𝑝𝐾𝑎values of valine as 2.32 and 9.62. The isoelectric point (pI)of this amino acid is ______. (rounded off to two decimal places) The isoelectric point (pI) […]