Blog

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 ______ […]

Q.41 Antigen and antibody interaction is shown by the following scheme Ab + Ag ⇌ Ab–Ag Where Ab is antibody, Ag is antigen and Ab–Ag is antigen–antibody complex. The values […]

Q.40 The electric field and capacitance of a capacitor in the absence of dielectric material are E and C, respectively. When the capacitor is filled with a dielectric material, the […]

Q.39 Kinetic theory of an ideal gas is based upon the following assumption(s): (A) Gases are made of molecules with negligible volume (B) The gaseous molecules do not possess kinetic […]

Q.38 Which of the following point(s) lies (lie) on the plane 2x + 3y + z = 6? (A) (0, 0, 6) (B) (0, 2, 0) (C) (1, 1, 1) […]

Q.37 Fehling’s solution (A) contains a copper complex of tartaric acid (B) forms a brick‑red precipitate with glucose (C) gives a purple precipitate with aldehydes (D) is used as a […]

Q.36 The elements with atomic numbers 19, 37 and 55 (A) form cubic chloride salts with the coordination number of cation being 6 (B) form ionic fluorides with general formula […]