93 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN1221 · Trivalent lanthanide ion having isotropic magnetic susceptibility is · Lanthanides & Actinides – General
ABC26IN1222 · Match fluorescence colours given in column A with lanthanide ions given in Column B Correct match is · Lanthanides & Actinides – General
ABC26IN1299 · The structure of CaB6 is close to that of · Main Group Elements – General
ABC26IN1300 · Among the elements Zn, Ga, Ge as As , the one with the lowest first ionization energy is - · Main Group Elements – General
ABC26IN1301 · A binary fluoride ( Z ) of xenon combines with two moles of NaF to give a product which on hearting to 100 C affords compounds A . the… · Phosphazenes Sn Compounds
ABC26IN1302 · Consider following statements: I: AsCl5 is thermally less stable than PCl5. II: Size of As is more than that of P. choose correct answer… · Main Group Elements – General
ABC26IN1303 · Consider the following statements for Be2Cl4 (I), B2Cl4 (II) and Ga2Cl4 (III): (A) There is an M-M (M = Be, B, Ga) bond in all. (B) The… · Main Group Elements – General
ABC26IN1466 · The correct of C-O bond length is · Organometallic Compounds – General
ABC26IN1467 · For the following reaction +\ 13CO The structure of the intermediate is · Cluster Compounds Wade Rules
ABC26IN1468 · The correct increasing order of C-C bond length in the following molecules (A-D) [PtCl3 (C2 H4 ) ]-(A), [Pt (PPh3 )2 (C2 H4 ) ](B), [Pt… · Organometallic Compounds – General
ABC26IN1469 · Which of the following are NOT closo clusters? [ \Co(5-C5H5) \2(C2B6H8) ](A)\; [B4C2H8 ](B)\; [B10H13\Au(PPh3)\ ](C)\; [C2B8H10 ](D) · Cluster Compounds Wade Rules
ABC26IN1470 · Identify the pair of molecules which are isoelecronic as well as isostructural from the following [Pd (PPh3 )4 ](A), [V(CO)6 ](B), [Cr(CO)6… · Organometallic Compounds – General
ABC26IN1471 · For the following reaction, correct statement ( S ) is/are · Insertion Elimination
ABC26IN1472 · The reaction of [(5-C5H5)Fe(CO)2]- with CH3I gives compound A. The 1H NMR spectrum of A shows two singlets in an integrated intensity ratio… · Cluster Compounds Wade Rules
ABC26IN1473 · The structures of [Re2 Cl8 ]2-(A) and [Os2 Cl8 ]2-(B) are made up of two MCl4 units. For these structure which statement is correct? · Organometallic Compounds – General
ABC26IN1474 · For the Wacker process, pick the correct statement (s) from the following: · Oxidative Addition Reductive Elimination
ABC26OR0990 · Using a double beam UV-visible spectrophotometer, Beer's law fails for K 2 Cr2 O7 solution when · Organic Spectroscopy – General
ABC26OR0991 · Mass spectrum of a compound shows [M2+ ] ion peak that is about 4 \% of M+. This indicates that the compound has one- · Mass Spec
ABC26OR0992 · Number of signals observed in the 13 C ~ NMR spectrum of the following compound is · NMR 13C
ABC26OR0993 · The reaction of [ (5-C5 H5 ) Fe (CO2 ) ] with CH3 I gives compound A. The 1 H NMR spectrum of A shows two singlets in an integrated… · NMR 1H
ABC26OR0995 · The correct match of protons in column A with the 1 H NMR chemical shifts in column B for the product of the following reaction is · NMR 1H
ABC26OR1054 · The structure of the intermediate A and the major product B, formed in the following reaction are · Pericyclic Reactions – General
ABC26OR1055 · Mechanism of the following transformation involves · Electrocyclic
ABC26OR1056 · For the following thermal [2+2] cycloaddition reaction, the correct statement about Transition State (TS) and preference for endo product… · Cycloaddition Diels Alder
ABC26OR1081 · The major products formed in the following photochemical reaction are · Photocycloaddition
ABC26PH0947 · Elementary steps of a reaction are as follows arrayl A+B [k-1]k1 2 C \\ 2 C k2 D array If steady state approximation is applicable to C… · Steady State Approximation
ABC26PH0948 · For an enzyme-substrate reaction, E+S k-1k1 ES the slope and intercept of plot between 1 / r and 1 /[S] are 10-2 s and 102 M-1 s… · Enzyme Kinetics
ABC26PH0949 · Difference between-activation energies of the reverse and forward steps of a reversible reaction is 9.212 RT . If the pre-exponential… · Complex Reactions
ABC26PH0950 · For a second-order reaction, the straight line among the following plots is · Chemical Kinetics – General
ABC26PH0966 · A Gaussian distribution has the functional form f(x)=22 a2 pi e^-(x-b)2 / 2 a2. The variance of such distribution is · Data Analysis – General
ABC26PH1018 · The equilibrium constant of the following reaction: Sn(s)+Sn4+(aq) 2 Sn2+(aq) At 300 K is closest to, (Given : E_Sn4+ / Sn2+o=0.15 V and… · Electrochemistry – General
ABC26PH1138 · In the pure Raman rotational spectrum of 16 O2, whose electronic ground state is 3, transitions between to/from · Rotational
ABC26PH1139 · A symmetric top molecule, among the following, is · Molecular Spectroscopy – General
ABC26PH1140 · Assuming harmonic approximation, the energy change for the reaction HCl+D2 DCl+HD in cm-1 is (the vibrational frequency data in cm-1 is… · Molecular Spectroscopy – General
ABC26PH1192 · A 5 g / L polymer solution is prepared with a polymer whose molar mass is 25 kg the osmotic pressure (in atm) of this solution at 25°C is… · Polymer Chemistry – General
ABC26PH1356 · If all the lattice points of an FCC structure are occupied by uniform hard spheres that touch each other, the fraction of volume occupied is · Crystal Systems Lattices
ABC26PH1357 · The (002) plane of an elemental FCC crystal diffracts X-rays ( lambda =0.154\,nm ) at Bragg angle 90 . the density of the crystal is 4… · X Ray Diffraction Bragg
ABC26PH1401 · Translational partition function of a D2 molecule confined in 100 cm vessel at 25 C is · Partition Functions
ABC26PH1504 · The change in entropy for a reversible adiabatic process is · Laws State Functions
ABC26PH1505 · In the phase diagram of water, the solid-liquid boundary has a negative slope. The reason for this unusual behavior can be traced to… · Laws State Functions
ABC26PH1506 · At 300 K, the thermal expansion coefficient and isothermal compressibility of liquid water are 2 10-4 K-1 and 5 10-5 bar-1, respectively ((… · Thermodynamics – General
ABC26OR1105 · Reaction of D - glucose with following reagents produces Reagents: 1. Acetone, H+; 2. P D C ; ~ 3 . ~(EtO)2 P(O) CH2 CO2 Et, NaH · Carbohydrates