197 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26PH1023 · For the electrochemical cell Ag|AgCl| MCl(0.01 M)|MCl(0.02 M)| AgCl Ag, the junction potential is the highest when M+is · Electrochemistry – General
ABC26PH1024 · The electrolyte solution that has the smallest Debye-length at 298 K is · Debye Huckel
ABC26PH1025 · The E0 (M+ / M ) of the cell, SHE \| MX M can be obtained from the plot of ( E_ cell is the cell potential and m is molality of ideal… · Electrochemistry – General
ABC26PH1026 · An aqueous solution contains 0.02 mol kg-1 NaCl and 0.03 mol kg-1 Ca (NO3 )2. The logarithm of mean ionic activity coefficient ( )of this… · Electrochemistry – General
ABC26PH1032 · If the rate constant for a base catalyzed ester hydrolysis reaction is 0.20 L mol-1 s-1, half-life (in s) of the ester (Given [ ester ]0=[… · Elementary Process Rate Constant – General
ABC26PH1033 · The rate constant of a second order reaction 2 A Z is k2. If the initial concentration of the reactant is a0 and the concentration of the… · Elementary Process Rate Constant – General
ABC26PH1034 · The oxidation of NO to NO2 occurs via the mechanism given below arrayl 2NO k-1k1 N2O2 \\ N2O2 + O2 k2 2NO2 array d [NO2 ]dt in the presence… · Elementary Process Rate Constant – General
ABC26PH1035 · Substance 'A' is exposed to 600 nm, 100 W light source for 6626 s, with 50 \% of the incident light being absorbed. 'A' decomposes… · Elementary Process Rate Constant – General
ABC26PH1036 · The concentration (C) of a compound undergoing decomposition as a function of time (t) is given below: The order of the reaction is Options: · Elementary Process Rate Constant – General
ABC26PH1037 · For a reaction, raising the temperature from 200 K to 300 K results in the increase of rate constant by a factor of 2. The activation… · Elementary Process Rate Constant – General
ABC26PH1084 · A cube does not have the symmetry element · Symmetry Elements Point Groups
ABC26PH1085 · The reducible representation , in the table is equal to the following superposition of the irreducible representation of C2v point group. · Character Tables
ABC26PH1086 · The following is the character table for the C2 v point group There are two functions f1 and f2 belonging to A2 and B1 representations… · Character Tables
ABC26PH1087 · The observed IR spectrum of BCl3 exhibits three bands at 995, 480 and 244\,cm-1, while the Raman bands are observed at 995, 471 and… · Group Theory – General
ABC26PH1088 · Given the matrices for C3 and below C3=bmatrix -1/2 & -√(3)2 & 0 \\ √(3)2 & -1/2 & 0 \\ 0 & 0 & 1 bmatrix =bmatrix 1 & 0 & 0 \\ 0 & 1 & 0… · Group Theory – General
ABC26PH1089 · For every atom that is NOT shifted under C4 and sigma symmetry operations, the characters are respectively. · Symmetry Elements Point Groups
ABC26PH1090 · The equivalent symmetry operations for S63 and S36 are, respectively · Symmetry Elements Point Groups
ABC26PH1144 · The frequency of O-H stretch occurs at 3600 cm-1. The O-D stretch frequency (in cm-1 ) would be closest to · Molecular Spectroscopy – General
ABC26PH1145 · In the pure rotational microwave spectrum of a XY molecule, the adjacent lines are separated by 4 cm-1. If the molecule is irradiated by a… · Rotational
ABC26PH1146 · The equilibrium dissociation energy of a diatomic molecule is 4.75 eV and its stretching frequency corresponds to 0.5 eV. The minimum… · Molecular Spectroscopy – General
ABC26PH1147 · The vibrational transition energies of a diatomic molecule corresponding to v=1 v=0 and v=2 v=1 are 2143.1 cm-1 and 2116.1 cm-1… · Vibrational
ABC26PH1148 · The energy separation of 12 C 16 O rotational energy levels between J =3 and J =9 is 24 cm-1. The rotational constant of 13 C16 O in cm1 is… · Molecular Spectroscopy – General
ABC26PH1197 · In a polymer of N monomer units, the root mean square separation between the two ends is proportional to · Polymer Chemistry – General
ABC26PH1198 · The degree of polymerization at t=10 h of a polymer formed by a stepwise process with polymerization rate constant of 3 10-2 M-1 s-1 and an… · Polymerisation Kinetics
ABC26PH1199 · Using standard equation for intrinsic viscosity []=K Mva for a solution of polymer and any information from the graph identify viscosity… · Viscometry Characterisation
ABC26PH1200 · A sample of polysterene is composed of three weight fractions: 0.20,0.50 and 0.30 . The molecular weight of these fractions are… · Molecular Weight Averages
ABC26PH1362 · The Miller index for the plane as shown in the figure and parallel to the c-axis, is · Solid State Chemistry – General
ABC26PH1363 · X-rays of 173 pm wavelength are reflected by the (111) plane of a cubic primitive crystal at theta =30 . The unit cell length (in pm) is… · Crystal Systems Lattices
ABC26PH1364 · Iron belongs to the BCC lattice. The Miller indices of the second allowed reflection in the powder diffraction pattern of iron would be · Crystal Systems Lattices
ABC26PH1365 · In the ccp packing, the number of lattice points per unit area in the planes is in the order · Crystal Systems Lattices
ABC26PH1408 · Consider a two-level system in which the excited state, separated from the ground state by energy , is doubly degenerate. The fraction of… · Statistical Thermodynamics – General
ABC26PH1409 · The molar residual entropy (in JK-1 ) of solid OCS would be closest to · Statistical Equilibrium
ABC26PH1410 · The entropy in terms of internal energy \U-U(0)\, and canonical partition function (Q) is given by S=(U-U(0))/T+k Q. Assuming that T the… · Partition Functions
ABC26PH1438 · A liquid of density 1.1\,g\,cm-3 climbs to a height of 5.0 cm when a capillary with internal radius of 0.2 mm is dipped into it. The… · Surface Tension
ABC26PH1439 · The order of a surface catalyzed unimolecular reaction, at very low and very high pressures of the reactant, would be, respectively · Catalysis Surface
ABC26PH1440 · The correct statement about chemisorption is · Catalysis Surface
ABC26PH1441 · A gas is known to satisfy Langmuir isotherm when adsorbed on a certain metal surface. If the fractional coverage of the gas is 0.5 when the… · Adsorption Isotherms
ABC26PH1442 · The surface tension of dilute soap solution is lower than that of pure water because · Surface Tension
ABC26PH1516 · Consider the entropy changes in a system undergoing transformation, as depicted in the diagram, below The correct statement among the… · Laws State Functions
ABC26PH1517 · Molar composition of a mixture of P and Q at equilibrium is 3: 1(P: Q). A small disturbance in composition results in change of chemical… · Partial Molar Quantities
ABC26PH1518 · 1.0 mol of a perfect monatomic gas is put through the cycle shown in the figure. The total work (in J) done during the cycle is (use 1L-bar… · Thermodynamics – General
ABC26PH1519 · (Cp-Cv ) for a non-ideal gas differs from (Cp-Cv ) for a perfect gas by the expression · Thermodynamics – General
ABC26PH1520 · A monatomic perfect gas undergoes expansion from (p1, V1 ) to (p2, V2 ) under isothermal or adiabatic conditions. The pressure of the gas… · Thermodynamics – General
ABC26PH1521 · For a van der Waals gas, the partial derivative is (( U)/( V) )T · Thermodynamics – General
ABC26PH1522 · The excess molar entropy of mixing of liquid A with liquid B is -R 2. The experimentally observed change in entropy upon mixing 1.0 mol of… · Laws State Functions
ABC26PH1523 · The change in chemical potential (in J ) of one mole of an ideal gas, when it is compressed isothermally at 300 K from 1.0 atm to 2.0 atm… · Partial Molar Quantities
ABC26OR1107 · the major product formed in the following reaction is · Natural Products – General