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Q.29 The order n for a given substrate concentration in an enzyme catalyzed reaction following Michaelis-Menten kinetics, is (A) n = 1 (B) n = 0 (C) n is not […]

Q.28 The length of an α-helix composed of 36 amino acid residues is (A) 10 Å (B) 54 Å (C) 27 Å (D) 360 Å The length of an α-helix […]

Q.27 Which one of the following amino acids has a higher propensity for cis peptide bondformation?(A) Histidine(B) Cysteine(C) Glycine(D) Proline Proline has the highest propensity for cis peptide bond formation […]

Q.26 Which one of the following statements is TRUE when a cell is kept in a hypotonicsolution?(A) Water moves out of the cell(B) Size of the cell remains same(C) No movement […]

The molar conductance at infinite dilution of sodium acetate, sodium sulfate and sulfuric acid solutions are 91.0 × 10−4, 259.8 × 10−4 and 859.3 × 10−4 S m2 mol−1, respectively. […]

The molar conductance at infinite dilution of sodium acetate, sodium sulfate and sulfuric acid solutions are 91.0 × 10−4, 259.8 × 10−4 and 859.3 × 10−4 S m2 mol−1, respectively. […]

Consider the following SN2 reaction of optically pure 1-chloro-3-ethylcyclopentane (X).H3CH2C–(cyclopentane ring)–Cl  + OH− → YX Q.23 The absolute configuration of 1-chloro-3-ethylcyclopentane (X) shown above is (A) (1S,3R) (B) (1S,3S) (C) […]

Consider the following SN2 reaction of optically pure 1-chloro-3-ethylcyclopentane (X).H3CH2C–(cyclopentane ring)–Cl  + OH− → YX Q.22 The structure of Y in the above reaction is (A) H3CH2C–(cyclopentane)–H / OH (B) […]

Q.21 The rate of a chemical reaction is tripled when the temperature of the reaction is increased from 298 K to 308 K. The activation energy (in kcal mol−1) up […]

Q.20 Iodine forms an anionic species Q in aqueous solution of iodide (I−). The number of lone pair(s) of electrons on the central atom of Q is __________. Iodine forms […]