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Q.51 The standard oxidation potentials for oxidation of NADH and H₂O are +0.315 V and −0.815 V, respectively. The standard free energy for oxidation of 1 mole of NADH by […]

Q.50 Two sources P and Q produce electromagnetic waves with wavelengths Z and 2Z, respectively. Source P ejects a photon with a maximum kinetic energy of 4.0 eV from a […]

Q.49 One gram of radioactive nuclei with a half‑life of 300 days is kept in an open container. The weight of nuclei remaining after 900 days (correct to 1 decimal […]

Q.48 ∫₀¹ z dx + ∫₁² (2 − x) dx = ________. The expression in the question is mathematically incomplete as shown in the image, so the exact integral cannot […]

Q.47 The positive root of the equation x³ + x² − 2 = 0 is ________. The positive root of the equation x3+x2−2=0x3+x2−2=0 is exactly 1.​ Solving the Equation Apply the Rational […]

Q.46 The [H⁺] of 0.1 N acetic acid solution is 1.33 × 10⁻³. The pH of the solution (correct to two decimal places) is ________. The pH of the 0.1 […]

Q45. Total number of singlets observed in the H NMR of the following compound is The compound shown is 2‑methoxy‑3‑hydroxybenzaldehyde, and the total number of singlets in its 11H NMR spectrum […]

Q.44 A linear DNA contains five restriction sites for EcoRI and three restriction sites for BamHI. The number of fragments that will be generated after digestion with EcoRI is ______. […]

Q.43 The Kₘ and Vmax of lactate dehydrogenase for conversion of pyruvate to lactate are 1 mM and 5 pM s⁻¹, respectively. At 0.25 mM pyruvate, the velocity of the […]

Q.42 The population of a bacterial culture increases from one thousand to one billion in five hours. The doubling time of the culture (correct to 1 decimal place) is ______ […]