86 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN1292 · Among the following, choose the correct products that are formed in the reaction of S2 Cl2 with ammonia in CCl4 NH4 Cl(A), S4 N4(B), S8(C)… · Main Group Elements – General
ABC26IN1293 · The final product(s) of the reaction of arachno borane, B4 H10 with NMe3 is/are · Main Group Elements – General
ABC26IN1447 · The rate of alkene coordination to [PtCl4]2- is highest for · Metal Alkene Alkyne
ABC26IN1448 · Consider the following statements, I and II: I : [Rh(CO)2 I2]- catalytically converts CH3 I and CO to CH3 COI II : [Rh(CO)2 I2]- is… · Organometallic Compounds – General
ABC26IN1449 · The geometry of [ReH9]2- is · Organometallic Compounds – General
ABC26IN1450 · According to isolobal analogy, the right set of fragments that might replace Co(CO)3 in [Co4(CO)12] is · Organometallic Compounds – General
ABC26IN1451 · According to Wade's rules, the correct structural types of [Co (eta 5-C5 H5) B4 H8] and [Mn (eta 2-B3 H8)(CO)4] are · Cluster Compounds Wade Rules
ABC26IN1452 · The correct geometry of [Rh6 C(CO)15]2- is · Organometallic Compounds – General
ABC26OR0945 · In the IR spectrum, carbonyl absorption band for the following compound appears at · NMR 1H
ABC26OR0982 · 1H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line positions at 1759, 1753, 1747, 1741… · NMR 1H
ABC26OR0984 · 1H NMR spectrum of a mixture of benzene and acetonitrile shows two singlets of equal integration. The molar ratio of benzene: acetonitrile… · NMR 1H
ABC26OR1046 · The correct sequence of pericyclic reactions involved in the following transformation is · Sigmatropic Shifts
ABC26PH0934 · For a reaction with an activation energy of 49.8 kJ mol-1, the ratio of the rate constants at 600 K and 300 K, (k600/k300), is… · Arrhenius Activation
ABC26PH0935 · According to the transition state theory, the plot with slope equal to (Delta H≠)/R is · Chemical Kinetics – General
ABC26PH0937 · For two reactions X(g)+Y(g) → Z(g) (1) M(g)+N(g) → P(g) (2) according to the collision theory, the ratio of squares of pre-exponential… · Arrhenius Activation
ABC26PH0938 · The rate of an acid-catalyzed reaction in aqueous solution follows the rate equation r = k[X^+][Y2-][H^+] If k16 and k4 are rate constants… · Rate Laws Order
ABC26PH1006 · The ionic mobilities of NH4+and HCO3-are 6 × 10-4 V-1 s-1 and 5 × 10-4 V-1 s-1, respectively. The transport numbers of NH4+and HCO3-are… · Conductance
ABC26PH1007 · The ionic strength of a solution containing 0.008 M AlCl3 and 0.005 M KCl is · Debye Huckel
ABC26PH1008 · Given : (i) Zn + 4NH3 → Zn(NH3)42+ + 2e, E0 = 1.03 V (ii) Zn → Zn+2 + 2e, E° = 0.763 V the formation of the complex Zn(NH3)42+ is… · Electrochemistry – General
ABC26PH1125 · 1H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line positions at 1759, 1753, 1747, 1741… · Molecular Spectroscopy – General
ABC26PH1126 · Vibrations of diatomic molecules are usually modelled by a harmonic potential. If the potential is given by x2, the correct statement is · Molecular Spectroscopy – General
ABC26PH1127 · The transition that belongs to the Lyman series in the hydrogen-atom spectrum is · Molecular Spectroscopy – General
ABC26PH1128 · The rotational constant and the fundamental vibrational frequency of HBr are, respectively, 10 cm-1 and 2000 cm-1. The corresponding values… · Molecular Spectroscopy – General
ABC26PH1129 · Among the following, both microwave and rotational Raman active molecule is · Raman
ABC26PH1130 · In a 200 MHz NMR spectrometer, a molecule shows two doublets separated by 2 ppm. The observed coupling constant is 10 Hz. The separation… · Molecular Spectroscopy – General
ABC26PH1188 · Distribution of molar masses in a typical polymer sample is shown below The A, B and C represent · Polymer Chemistry – General
ABC26PH1350 · Each void in a two dimensional hexagonal close-packed layer of circles is surrounded by · Solid State Chemistry – General
ABC26PH1351 · The sin 2 theta values obtained from X-ray powder diffraction pattern of a solid are 2x, 4x, 6x, 8x where x is equal to 0.06. The… · X Ray Diffraction Bragg
ABC26PH1395 · The weight of configuration with two ups and three down spins in a system with five spin 1/2 particles is · Statistical Thermodynamics – General
ABC26PH1396 · Partition function of a one – dimensional oscillator having equispaced energy level with energy spacing equal to kb T and zero ground… · Partition Functions
ABC26PH1431 · When 1 × 10-5 g of a fatty acid (M=602.3 g/mol) was placed on water as a surface film, a monomolecular layer of area 100 cm2 was formed on… · Surface Chemistry – General
ABC26PH1432 · Mark-Houwink equation ([n]=KMa) is used for the determination of · Surface Chemistry – General
ABC26PH1491 · The parameter which always decreases during a spontaneous process at constant S and V, is · Free Energy Equilibria
ABC26PH1492 · Triple point pressure of substances A, B, C and D are 0.2, 0.5, 0.8 and 1.2 bar, respectively. The substance which sublimes under standard… · Phase Equilibria
ABC26PH1493 · The equation of state for one mole of a gas is given by PV-b=RT, where b and R are constants. The value of ((∂ H)/(∂ P))T is · Thermodynamics – General
ABC26PH1495 · The partial derivative ((∂ T)/(∂ V))P is equal to · Thermodynamics – General