88 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0030 · The use of dynamic inert atmosphere in thermogravimetric analysis (TGA): (1) decreases decomposition temperature (2) decrease weight loss… · Analytical Chemistry – General
ABC26IN0064 · The correct non-linear and iso-structural pair is · Chemical Bonding – General
ABC26OR0097 · Atorvastatin (structure given below) is a · Steroids
ABC26OR0230 · The major products formed in the following are: · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0233 · The products A and B in the following reaction sequence are: → (B) · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0234 · The products A and B in the following reaction sequence are: A B · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26PH0187 · When Si is doped with a Group V element · Band Theory
ABC26PH0188 · The interplanar spacing of (110) planes in a cubic unit cell with lattice parameter a = 4.242 Å is · Crystal Systems Lattices
ABC26PH0202 · The number of configurations in the most probable state, according to Boltzmann formula, is · Statistical Equilibrium
ABC26PH0235 · Two phases alpha and beta of a species are in equilibrium. The correct relations observed among the variables, T, p and mu are · Thermodynamics – General
ABC26IN0846 · The use of dynamic inert atmosphere in thermogravimetric analysis (TGA): · Analytical Chemistry – General
ABC26IN0847 · The correct statements for hollow cathode lamp (HCL) from the following are: (A) HCL is suitable for atomic absorption spectroscopy (AAS)… · Analytical Chemistry – General
ABC26IN0870 · If an enzyme fixes N2, in plants by evolving H2, the number of electrons and protons associated with that, respectively are · Bioinorganic Chemistry – General
ABC26IN0871 · Ozone present in upper atmosphere protects people on the earth · Bioinorganic Chemistry – General
ABC26IN0872 · Molybdoenzymes can both oxidize as well as reduce the substrates, because · Zinc Enzymes
ABC26IN0873 · The cooperative binding of O2 in hemoglobin is due to · Oxygen Carriers Hemoglobin
ABC26IN0941 · The correct non-linear and iso-structural pair is · Chemical Bonding – General
ABC26IN0942 · Structures of SbPh5 and PPh5 respectively are · Chemical Bonding – General
ABC26IN0943 · The maximum bond order obtained from the molecular orbitals of a transition metal dimer, formed as linear combinations of d-orbitals alone… · Chemical Bonding – General
ABC26IN1037 · In bis(dimethylglyoximato)nickel(II), the number of Ni-N, Ni-O and intramolecular hydrogen bond(s)respectively are · Molecular Orbital Ligand Field
ABC26IN1038 · NiBr2 reacts with (Et) (Ph2) P at -78° C in CS2 to give red compound ' A ', which upon standing at room temperature turns green to give… · Coordination Chemistry – General
ABC26IN1039 · If L is a neutral mono-dentate ligand, the species, [AgL4]2+, [AgL6]2+ and [AgL4]3+ respectively are · Molecular Orbital Ligand Field
ABC26IN1040 · [CoL6]3+ is red in colour whereas [CoL6′]3+ is green. L. and L′ respectively corresponds to, · Coordination Chemistry – General
ABC26IN1041 · In its electronic spectrum, [V (H2 O)6]3+ exihibits two absorption bands, one at 17,800 (v1) and the second at 25, 700 (v2) cm. The correct… · Electron Transfer Redox
ABC26IN1042 · The term symbol that is NOT allowed for the np2 configuration is · Term Symbols Spectra
ABC26IN1043 · Reaction of [Ru (NH3)5(isonicotinamide)]3+ with [Cr (H2 O)6]3+ occurs by inner sphere mechanism and rate of the reaction is determined by… · Reaction Mechanisms Substitution
ABC26IN1044 · Consider the second order rate constants for the following outer-sphere electron transfer [Fe(H2O)6]3+ / [Fe(H2O)6]2+ 4.0 M-1 sec-1… · Electron Transfer Redox
ABC26IN1046 · Identify the correct statement about [Ni (H2 O)6]2+ and [Cu (H2 O)6]2+ · Coordination Chemistry – General
ABC26IN1047 · Reaction of nitrosyltetrafluoroborate to Vaska's complex gives complex A with angle M-NO=124°. The complex A and its N-O stretching… · Reaction Mechanisms Substitution
ABC26IN1170 · The 19F NMR spectrum of ClF3 shows · Inorganic Spectroscopy – General
ABC26IN1171 · The low temperature (-98°C) 19F NMR spectrum of SF4, shows doublet of triplets with the point group symmetry. · IR Raman Symmetry
ABC26IN1172 · The correct order of the isomeric shift in Mössbauer spectra (57Fe source) of iron compounds is · Electronic Spectra Tanabe Sugano
ABC26IN1173 · The number of lines in the ESR spectrum of CD3 is (the spin of D is 1) · Inorganic Spectroscopy – General
ABC26IN1208 · A comparison of the valence electron configuration of the elements, Sm and Eu suggests that · Lanthanides & Actinides – General
ABC26IN1269 · Reactions of elemental as with hot and conc. HNO3, and H2 SO4 respectively, give · Main Group Elements – General
ABC26IN1270 · Chromite ore on fusion with sodium carbonate gives · Main Group Elements – General
ABC26IN1271 · The correct order of decreasing electronegativity of the following atoms is, · Main Group Elements – General
ABC26IN1272 · The correct order of the size of S, S2-, S2+ and S4+ species is, · Main Group Elements – General
ABC26IN1335 · The nuclides among the following, capable of undergoing fission by thermal neutrons, are (A) 233U (B) 235U (C) 239Pu (D) 232Th · Fission Fusion
ABC26IN1337 · The particles postulated to always accompany the positron emission among are: (A) neutrino, (B) anti-neutrino, (C) electron, · Nuclear Chemistry – General
ABC26IN1389 · The ligand(s) that is (are) fluxional in [(eta 5-C5H5)(eta -C5H5)Fe(CO)2] in the temperature range 221-298K, is (are) · Organometallic Compounds – General
ABC26IN1390 · The typical electronic configurations of the transition metal centre for oxidative addition · Oxidative Addition Reductive Elimination
ABC26IN1391 · The oxidation state of Ni and the number of metal-metal bonds in [Ni2(CO)6]2- that are consistent with the 18 electron rule are · 18 Electron Rule
ABC26IN1392 · The compound [Re2 (Me2 PPh)2 Cl4](M) having a configuration of sigma 2 pi 4 delta 2 delta *2 can be oxidized to M+ and M2+. The formal… · Metal Carbonyls
ABC26IN1393 · The total valence electron count and the structure type adopted by the complex [Fe3(CO)15C] respectively, are · 18 Electron Rule
ABC26IN1394 · 1H NMR spectrum of [ eta 5-C5H5Rh)(C2H4)2] at -20°C shows a typical AA' XX' pattern in the olefinic region. On increasing the temperature… · Metal Carbonyls
ABC26IN1395 · Amongst the following which is not isolobal pairs · Organometallic Compounds – General
ABC26OR0966 · The mass spectrum of the product A, formed in the following reaction, exhibits M, M + 2, M + 4 peaks in the ratio of about 1 : 2 : 1. The… · Mass Spec
ABC26OR1033 · In a Diels-Alder reaction, the most reactive diene amongst the following is · Cycloaddition Diels Alder
ABC26OR1034 · Pericyclic reaction involved in one of the steps of the following reaction sequence is (i) heat (ii) (EtO)3P · Sigmatropic Shifts