167 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.
ABC26PH0774 · The normalisation constant 'A' for the wavefunction psi (phi) = Ae(im phi) where 0 ≤ phi ≤ 2 pi is: · Quantum Chemistry – General
ABC26PH0775 · Deduce whether the matrices A and B commute or not. A = 2 1 0 1 B = 1 1 0 1 · Quantum Chemistry – General
ABC26PH0776 · If the electron were spin 3/2 particles, instead of spin 1/2, then the number of electrons that can be accomodated in a level are · Angular Momentum
ABC26PH0777 · For a particle in a cubic box, the total number of quantum number needed to specify its state are · Particle In A Box
ABC26PH0779 · Find the eigenvalues of the following 3 × 3 matrix given that 2 is one of the eigen values. Compute the determinant of matrix using the… · Quantum Chemistry – General
ABC26PH0780 · Which of the following is NOT a solution of the equation (d2x)/(dt2) + omega 2 x = 0 · Quantum Chemistry – General
ABC26PH0781 · If psi is the eigenfunction to the Hamiltonian operator with alpha as the eigenvalue, then alpha MUST be · Postulates Operators
ABC26PH0782 · A quantum mechanical particle of mass m free to rotate on the surface of a sphere of radius r is in the state with energy (10ħ2)/(mr2). The… · Quantum Chemistry – General
ABC26PH0784 · The function y = xexp (-x2) has a minimum at x = -1/(√(2)). The second derivative of the function at the minimum is · Quantum Chemistry – General
ABC26PH0787 · If x = x × px = h/(2 pi i)d/dx, then the value(s) of pxx - xpx is/are · Quantum Chemistry – General
ABC26PH0788 · The maximum of a function Ae-ax2 (A > 0; a > 0) is at x = · Quantum Chemistry – General
ABC26PH0790 · For a particle in one-dimensional box of length L with potential energy V(x) = 0 for L > x > 0 and V(x) = ∞ for x ≥ L and x ≤ 0 an… · Particle In A Box
ABC26PH0792 · The function f(x)=xe^-x2 has a minimum at · Quantum Chemistry – General
ABC26PH0793 · The eigenvalue(s) of the matrix 1 2 2 1 is/are · Quantum Chemistry – General
ABC26PH0794 · Two sets of quantum numbers with the same number of radial nodes are · Hydrogen Atom
ABC26PH0795 · The potential for a particle in a one-dimensional box is given as: V(x) = 0 for 0 ≤ x ≤ L, and V(x) = ∞ elsewhere. The locations of the… · Postulates Operators
ABC26PH0796 · The number of P = O bonds present in the tetrabasic acid H4P2O7 is: · Redox Reaction – General
ABC26PH0797 · Indicator used in redox titration is · Redox Reaction – General
ABC26PH0798 · The number of S-S bond(s) in tetrathionate ion is ____. · Redox Reaction – General
ABC26PH0799 · The volume of 0.3 M ferrous ammonium sulphate solution required for the completion of redox titration with 20 mL of 0.1 M potassium… · Redox Reaction – General
ABC26PH0800 · The number of lone pairs present in phosphonic acid (phosphorus acid) is ____ · Redox Reaction – General
ABC26PH0801 · The value of 'n' in [PnO18]6- is ____ · Redox Reaction – General
ABC26PH0802 · The volume of 1 N KMnO4 required to reach equivalence point in the titration with 0.01 mole of ferrous oxalate dissolved in dilute H2 SO4 is · Redox Reaction – General
ABC26PH0803 · Monochromatic X-rays having energy 2.8 × 10-15 J diffracted (first order) from (200) plane of a cubic crystal at an angle 8.5°. The length… · Solid State – General
ABC26PH0804 · Calcium crystallizes in fcc lattice of unit cell length 5.56 Å and density 1.4848 g cm-3. The percentage of Schottky defects (rounded off… · Solid State – General
ABC26PH0805 · MgO crystallizes as rock salt structure with unit cell length 2.12 Å. From electrostatic model, the calculated lattice energy in kJ mol-1… · Solid State – General
ABC26PH0806 · Fullerene (C60) crystallizes in an FCC unit cell (edge length = 14.14 Å) with one C60 centered at each lattice point. The smallest distance… · Solid State – General
ABC26PH0807 · The ratio of the nearest neighbour atomic distances in body-centered cubic (bcc) and face-centered cubic (fcc) crystals with the same unit… · Solid State – General
ABC26PH0808 · A first order reflection of X-ray from [220] plane of copper crystal is observed at a glancing angle of 22°. The wavelength of the X-ray… · Solid State – General
ABC26PH0809 · The number of crystal systems and the number of Bravais lattices are, respectively, · Solid State – General
ABC26PH0810 · Silver crystallizes in a face-centered cubic lattice. The lattice parameter of silver (in picometer) is ____ [Given: Avogadro's number =… · Solid State – General
ABC26PH0811 · The separation of 123 planes (in nm) in an orthorhombic cell with a = 0.25 nm, b = 0.5 nm and c = 0.75 nm is ____ (final answer should be… · Solid State – General
ABC26PH0812 · The coordination numbers of Cs+and Cl-ions in the CsCl structure, respectively are · Solid State – General
ABC26PH0813 · In a diffraction experiment with X-rays of wavelength 1.54 Å, a diffraction line corresponding to 2 theta = 20.8° is observed. The… · Solid State – General
ABC26PH0814 · The potential energy of interaction between two ions in an ionic compound is given by U = 1389.4 [(Z1Z2)/(r/Å)] kJ mol-1. Assuming that… · Solid State – General
ABC26PH0815 · At what angle(s) of incidence, X-rays of wavelength 5.0 Å will produce diffracted beam from the (110) planes in a simple cubic lattice with… · Solid State – General
ABC26PH0817 · A first order reflection from (111) plane is observed for LiX with 2 theta = 24.6° (X-ray of wavelength 1.54 Å). Assuming LiX to be a cubic… · Solid State – General
ABC26PH0818 · A hypothetical element (atomic weight = 300) crystallizes in a simple cubic lattice. For this crystal, the first order X-ray diffraction… · Solid State – General
ABC26PH0819 · The lattice energy of LiF calculated from Born-Lande equation -1000 kJ mol-1. Assume that for both LiF and MgO the Madelung constants… · Solid State – General
ABC26PH0821 · The structure of rock salt consists of · Solid State – General
ABC26PH0822 · Draw a properly labeled unit cell diagram of CsCl. Show through calculations that there is only one CsCl per unit cell. IIT JAM 2009 · Solid State – General
ABC26PH0823 · The unit cell of diamond can be obtained from the unit cell of · Solid State – General
ABC26PH0824 · In CsCl structure, the number of Cs^+ ions that occupy second nearest neighbour locations of a Cs^+ ion is: · Solid State – General
ABC26PH0825 · The ionic radii of Ca2+ and F^- are 100 pm and 133 pm respectively. The coordination number of Ca2+ in the ionic solid will be · Solid State – General
ABC26PH0828 · A system undergoes two cyclic processes 1 and 2. Process 1 is reversible and process 2 is irreversible. The correct statement relating to… · Thermodynamics – General
ABC26PH0829 · For a cyclic process performed by an ideal gas, changes in some thermodynamic functions are zero. Indicate the set in which all the… · Thermodynamics – General
ABC26PH0834 · The molar internal energy of a gas at temperature T is Um(T). The molar internal energy at T = 0 is Um(0). The correct expression that… · Thermodynamics – General
ABC26PH0835 · Choose the INCORECT statement among the following: · Thermodynamics – General
ABC26PH0836 · The work done during the free expansion of one mole of an ideal gas at 27^ to twice its original volume is (given : RT = 2494 J mol-1, ln 2… · Thermodynamics – General