133 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0826 · Inspectrofluorimetric determination in solution A. absorbance of analyte solution is kept near to 0.05 B. oxygen is eradicated from… · Analytical Chemistry – General
ABC26IN0827 · Match the items in column I with those of column II Correct match is · Titrations Gravimetry
ABC26IN0911 · Choose the correct statements for oxymyoglobin and cytochrome P450 (resting state) from the following: A. Both contain dianion of… · Metal Toxicity Medicine
ABC26IN0912 · The correct match for the drug molecules in the Column A with their medicinal use in Column B is Column A P Q R Column B (i) Anaesthetic… · Bioinorganic Chemistry – General
ABC26IN0913 · Complex(es) which has/have unpaired electron(s) that is equal to that of iron center in oxymyoglobin is/are A. [Fe(ox)3]3- B. [Fe(CN)6]3-… · Iron Sulfur Proteins
ABC26IN0914 · Match Column I, II and III The correct match is · Metal Toxicity Medicine
ABC26IN0915 · During the binding of O2 to myoglobin (consider 'heme' in xy-plane), the molecular orbital of O2 and atomic orbital of Fe involved in the… · Bioinorganic Chemistry – General
ABC26IN0916 · In the catalytic cycle of Cytochrome P450, the generation of [(porphyrin)+FeIV(O)] from [(porphyrin)FeIII(OOH)] involves · Bioinorganic Chemistry – General
ABC26IN0975 · The ion having the highest bond order is · Hydrogen Bonding Weak Interactions
ABC26IN0976 · The magnitude of bond angles in gaseous NF3, SbF3 and SbCl3 follow the order · Chemical Bonding – General
ABC26IN0977 · The species for which the shapes (geometry) can be predicted by VSEPR theory is/are (A) [PtCl4]2- (B) [TeCl6]2- (C) PF3 and SF6 · VSEPR Geometry
ABC26IN0978 · Choose the correct order of energy of 2 sigma g and 1 pi 0 molecular orbitals for B2, C2 and O2 : · Chemical Bonding – General
ABC26IN0980 · Consider the following statements for Allred-Rochow electronegativity (AR): (i) AR is directly proportional to Zeff (ii) AR is inversely… · Chemical Bonding – General
ABC26IN0981 · The total bond order between adjacent carbon atoms of benzene is · Chemical Bonding – General
ABC26IN1194 · For the complex shown below in non-fluxional state, the expected 31P{1H} NMR resonance(s) is/are [31P = I = 1/2] · Inorganic Spectroscopy – General
ABC26IN1195 · In Mossbauer spectrum of a sample containing iron recorded in the presence of a static magnetic field, the number of possible allowed… · Mossbauer
ABC26IN1225 · Pair of lanthanide ions which show significant deviation between the experimental and calculated magnetic moments, considering contribution… · Lanthanides & Actinides – General
ABC26IN1226 · The pair in which both actinides show +3 oxidation state only is · Lanthanides & Actinides – General
ABC26IN1227 · The correct match for column A with column B is : · Lanthanides & Actinides – General
ABC26IN1315 · The common heptacity observed for coordination of C60 to a metal center is · Main Group Elements – General
ABC26IN1316 · Match the items in Column I with those of Column II The correct match is. · Main Group Elements – General
ABC26IN1318 · The correct statements for dithionite and dithionate anions from the following are (A) both have S-S bond (B) both are dianionic (C)… · Main Group Elements – General
ABC26IN1319 · Correct statement/s among the following with respect to ionization energy (IE) is/are (i) (IE1+IE2+IE3) for indium is more than that of… · Main Group Elements – General
ABC26IN1320 · The reason for significantly high solubility of AgClO4 in benzene than in alkane solvents is · Main Group Elements – General
ABC26IN1321 · Choose the correct statements for the Group 15 halides: (i) AsCl3 can form complexes of type [AsCl4]-in the presence of a chloride source… · Main Group Elements – General
ABC26IN1322 · The reaction of XeF6 with a limited amount of quartz gives compound A. Then on reaction with an equivalent amount of XeO3. A gives B. The… · Main Group Elements – General
ABC26IN1323 · The energies of interaction for (i) ion pair, (ii) ion-dipole, and (iii) dipole-dipole interactions are inversely proportional to · Main Group Elements – General
ABC26IN1490 · The expected number of co bands in the IR spectra of fac- [Mo (PPh3)2(CO)3] and trans- [Mo(PPh3)2(CO)4] are, respectively · Organometallic Compounds – General
ABC26IN1491 · The most stable vanadium species in aqueous medium is · Organometallic Compounds – General
ABC26IN1492 · The correct order of metal-carbon distance is · Metal Carbonyls
ABC26IN1493 · The rate-determining step in the catalytic synthesis of acetic acid by Monsanto process is · Oxidative Addition Reductive Elimination
ABC26IN1494 · The cluster types of [Fe5(CO)14 N]-and [Co6(CO)13 N]-are, respectively, · Cluster Compounds Wade Rules
ABC26IN1495 · The main product of nucleoplallic attack of H- on the complex ion given below is · Cluster Compounds Wade Rules
ABC26IN1496 · The order of rate of substitution of chloride by pyridine (in ethanol) in the following complexes is · Organometallic Compounds – General
ABC26IN1497 · Among the following complexes, the one showing the highest rate of substitution of a CO ligand on heating with one equivalent of PPh3 in… · Organometallic Compounds – General
ABC26IN1500 · The geometry/shape of the Fe4 core of the cluster [Fe4 C(CO)12]2- is · Cluster Compounds Wade Rules
ABC26IN1502 · The number of peaks with relative intensities observed in the 1 H NMR spectra of [(Cp)2 Fe(CO)2] at +30 °C and - 80 °C in diethyl ether… · Organometallic Compounds – General
ABC26OR1002 · In IR spectrum, recorded neat, a compound shows a strong and broad band at 3300 cm-1. The band becomes sharp and shifts to 3600 cm-1 when… · IR
ABC26OR1003 · The correct match of 13C NMR chemical shift values (delta ppm) for pyridine is · NMR 1H
ABC26OR1004 · The frequency of O-H stretch occurs at 3600 cm-1. The O-D stretch frequency (in cm-1) would be closest to · IR
ABC26OR1006 · The structure of the compound which displays the following spectral data is IR = 1690, 1100 cm-1 1H NMR: delta 2.8 (s, 3H), 3.8 (s, 3H)… · Combined Structure Elucidation
ABC26OR1007 · The natural product that gives a signal at 218 ppm in its 13C NMR spectrum is · NMR 1H
ABC26OR1008 · The correct order of carbonyl stretching frequency of the given compounds is A B C · IR
ABC26OR1058 · The intermediate A and the major product B, formed in the following reaction are [A] Delta [B] · Pericyclic Reactions – General
ABC26OR1061 · The following transformation involves a series of + + CO2 · Electrocyclic
ABC26PH0874 · The molar residual entropy (in J/K) for solid OCS is close to · Atomic And Molecular Term Symbols – General
ABC26PH0875 · A monoatomic perfect gas undergoes expansion from (p1, V1) to (p2, V2) under isothermal or adiabatic conditions. The pressure of the gas… · Atomic And Molecular Term Symbols – General
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 (Ecell is the cell potential and m is molality of ideal dilute… · Electrochemistry – General