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Q.1 An acid contains C, H and O atoms. On combustion analysis, 0.454 g of the acid gives 0.418 g ofH2O and 1.023 g of CO2. What is the empirical […]

Q.60 Amongst the molecules given below, the total number of molecules that have atleast one sp2 hybridized atom is __________.C6H6, NO2, BF3, H2O2, SO2, C2H2, L–Tryptophan C6H6, NO₂, BF₃, H₂O₂, […]

Q.59 How many GTP molecules are required for the translocation of tRNA from Psite to E site during translation elongation process in bacteria? One GTP molecule is required for the […]

Q.58 A double stranded DNA molecule of total 5000 base pairs long, has a meltingtemperature of 85 °C. What will be the % AT base pairs in this sample? (upto […]

Q.57 In an actively growing population from a single bacterium, 1,048,576 cells arepresent after 20th generation. How many cells were there in 5th generation? Step-by-Step Solution Bacteria double per generation […]

Q.56 Assuming the molecule shown below is aromatic, the value of “n” according to“Hückel’s rule” is The given polycyclic conjugated system contains a total of 10 π‑electrons, so for Hückel’s […]

Q.55 A 500 nm light is used for imaging in a confocal microscope. What will be thebest resolution (in nm) of this microscope? The best resolution of a confocal microscope […]

Q.54 The potential difference to accelerate an electron was quadrupled. By whatfactor does the de Broglie wavelength of the electron beam change? Core Concept The de Broglie wavelength λ for […]

Q.53 In a randomly mating population, the frequency of ‘A’ allele is 0.7. What is thefrequency of ‘Aa’ genotype in the next generation according to Hardy–Weinberg’s law? (up to two […]

Q.52 What is the acceleration due to gravity (m/s2) on the surface of a planet if itsradius is 1/4th that of earth and its mass is 1/80th that of earth? […]