ABC26OR1021 · The two step conversion of 7-dehydrocholesterol to vitamin D3 proceeds through · Electrocyclic
ABC26PH0885 · For a reaction, the rate constant k at 27° C was found to be k=5.4 × 1011 e-50. The activation energy of the reaction is: · Arrhenius Activation
ABC26PH0887 · In the Michaelis-Menten mechanism for enzyme kinetics, the expression obtained is: v/([E]0[S])=1.4 × 1012-104 v/([E]0) The values of k3… · Enzyme Kinetics
ABC26PH0888 · One of the assumptions made in the conventional activated complex theory is: · Chemical Kinetics – General
ABC26PH0891 · "Phosphorescence" is represented as · Chemical Kinetics – General
ABC26PH0892 · Using cuvettes of 0.5 cm path length, a 10-4 M solution of a chromophore shows 50% transmittance at certain wave length. The molar… · Chemical Kinetics – General
ABC26PH0956 · Two data sets involving the same variables X and Y are given below If the slopes and intercepts of the regression lines for the two sets… · Regression Fitting
ABC26PH1101 · For a diatomic molecule AB, the energy for the rotational transition from J = 0 to J = 1 state is 3.9 cm-1. The energy for the rotational… · Rotational
ABC26PH1102 · For the vibrational Raman spectrum of a homonuclear diatomic molecule, the selection rule under harmonic approximation is · Raman
ABC26PH1103 · The following data were obtained from the vibrational fine structure in the vibronic spectrum of a diatomic molecule: omega e = 512 cm-1… · Vibrational
ABC26PH1173 · A polymer sample has the following composition. The polydispersity index (P.D.I) of the polymer is · Molecular Weight Averages
ABC26PH1174 · During the addition polymerization, the reaction proceeds via · Polymerisation Kinetics
ABC26PH1175 · The number-average molar mass (MN) and weight-average molar mass (Mw) of a polymer are obtained respectively by · Viscometry Characterisation
ABC26PH1216 · For any operator A and its adjoint A, the INCORRECT statement is: · Postulates Operators
ABC26PH1217 · For hydrogen-like atom with a nuclear charge Z, the energy of orbital with principal quantum number 'n' follows the relation. · Hydrogen Atom
ABC26PH1218 · The average value of the radius r in the 1s state of the hydrogen atom is (a0 is Bohr radius) · Hydrogen Atom
ABC26PH1219 · The probability of finding the particle in a one dimensional box of length 'L' in the region between L/4 and 3L/4 for quantum number n = 1… · Particle In A Box
ABC26PH1220 · A particle in three dimensional cubic box of length L has energy of (14h2)/(8mL2). The degeneracy of the state is · Particle In A Box
ABC26PH1221 · The following are the three statements about perturbation theory (A) Second order perturbation correction to the ground state energy is… · Perturbation Theory
ABC26PH1223 · For H2 molecule in the excited state sigma g1 sigma u1 spin part of the triplet state with mS = 0 is proportional to · Angular Momentum
ABC26PH1323 · How many atoms are there in an element packed in a fcc structure · Solid State Chemistry – General
ABC26PH1325 · The lattice parameter of an element stabilized in a fcc structure is 4.04 Å. The atomic radius of the element is: · Crystal Systems Lattices
ABC26PH1326 · The wavelength and the spectral region for a single electron transfer across the band gap in a semi-conductor (Ex=1.98 × 10-19) are… · Band Theory
ABC26PH1375 · The electric-dipole allowed transition among the following is · Partition Functions
ABC26PH1416 · Dispersion of a solid in a liquid, a liquid in a gas and a liquid in a liquid are respectively known as · Colloids Micelles
ABC26PH1417 · A dilute silver nitrate solution is added to a slight excess iodide solution. A solution of AgI is formed whose surface adsorbs. · Surface Chemistry – General
ABC26PH1419 · The adsorption of a gas is described by the Langmuir isotherm with the equilibrium constant K = 0.9 kPa-1 at 25°C. The pressure (in kPa) at… · Adsorption Isotherms
ABC26PH1453 · The vapour of a pure substance, when cooled under a pressure less than its triple-point pressure, · Thermodynamics – General
ABC26PH1454 · The quantities, which are held fixed in a canonical ensemble are · Thermodynamics – General
ABC26PH1455 · An ideal gas was subjected to a reversible, adiabatic, expansion and then its initial volume was restored by a reversible, isothermal… · Thermodynamics – General