86 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0018 · The pair of light source and atomizer resulting highest sensitivity to atomic absorption spectrometric measurement is: (1) Hg lamp, nitric… · Analytical Chemistry – General
ABC26IN0027 · Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity of fluorescent molecule 2… · Analytical Chemistry – General
ABC26IN0162 · The 119Sn NMR chemical shift (approximately in ppm) corresponding to (eta 5-Cp)2Sn (relative to Me4Sn) is · Inorganic Spectroscopy – General
ABC26OR0034 · The correct relation between the following compounds is · Stereochemistry R S E Z
ABC26OR0038 · In the following compound, the stereochemical descriptor for Ha and Hb is · General Organic Chemistry – General
ABC26OR0039 · The correct statements about conformations X and Y of 2-butanone are (X) (Y) (A) X is more stable than Y (B) Y is more stable than X (C)… · Conformational Analysis
ABC26OR0040 · The correct order of magnitude of 'A values' for the given substituents in cyclohexane derivatives is X = CH3, CN, Ph · General Organic Chemistry – General
ABC26OR0101 · Antitubercular drug(s) among the following is (are) · Natural Products – General
ABC26OR0151 · The major product formed in the following reaction is heat · Pericyclic Reactions – General
ABC26OR0256 · The major product formed in following reaction is · Named Reactions
ABC26OR0257 · The products A and B in the following reaction sequence are 18-crown-6, rt. A B · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0259 · The major product formed in following reaction sequence is Pd(OAc)2, PPh3, Et3N · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0261 · The major product formed in following reaction sequence is h nu, vycor filter, ClCH2CH2Cl, 80°C · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26OR0262 · The structures of A and B in the following reaction sequence are 2. heat A [2. H3O^+]1. LiAlH4 B · Reduction Reagents
ABC26OR0263 · Structure of the major product in the following synthetic sequence is 1. CuI 2. SeO2 · Reagents, Reaction Mechanisms & Named Reactions – General
ABC26PH0006 · The lowest energy-state of an atom with electronic configuration ns1np1 has the term symbol · Term Symbols Atoms
ABC26PH0007 · The electric-dipole allowed transition among the following is · Selection Rules
ABC26PH0008 · The term symbol for the first excited state of Be with the electronic configuration 1s2 2s1 3s1 is · Term Symbols Atoms
ABC26PH0013 · The concentration of a reactant undergoing decomposition was 0.1, 0.08 and 0.067 mol L-1 after 1.0, 2.0 and 3.0 hr respectively. The order… · Chemical Kinetics – General
ABC26PH0033 · The temperature-dependence of a reaction is given by k = AT2 exp (-E0/RT). The activation energy Ea of the reaction is given by: · Arrhenius Activation
ABC26PH0034 · For a reaction, 2A + B → 3Z, if the rate of consumption of A is 2 × 10-4 mol dm-3 s-1 the rate of formation of Z (in mol dm-3 s-1) will be · Chemical Kinetics – General
ABC26PH0036 · Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity of fluorescent molecule. 2… · Chemical Kinetics – General
ABC26PH0037 · In a photochemical reaction, radicals formed according to the equation C4H10 + h nu ⇌ 2 C2H5 C2H5 + C2H5 k2 C2H6 + C2H4 If I is the… · Chemical Kinetics – General
ABC26PH0060 · The temperature-dependence of an electrochemical cell potential is · Electrochemistry – General
ABC26PH0061 · Conductometric titration of a strong acid with a strong alkali (MOH) shows linear fall of conductance up to neutralization point because of · Conductance
ABC26PH0082 · The product C2x · sigma xy (C2x is the two-fold rotation axis around the x-axis and sigma xy is the xy mirror plane) is · Group Theory – General
ABC26PH0083 · A molecular orbital of a diatomic molecule changes sign when it is rotated by 180° around the molecular axis. This orbital is · Group Theory – General
ABC26PH0084 · IR active normal modes of methane belong to the irreducible representation: · Character Tables
ABC26PH0215 · For a reaction on a surface H2 + + H At low pressure of H, the rate is proportional to · Surface Chemistry – General
ABC26IN0805 · Match the action of H2 O2, in aqueous medium given in column A with the oxidation/reduction listed in column B The correct answer is · Acids & Bases – General
ABC26IN0806 · Water plays different roles in the following reactions. (i) 2H2O+Ca → Ca2++2OH-+H2 (ii) nH2O+Cl → [Cl(H2O)n]- (iii) 6H2O+Mg2+ →… · Acids & Bases – General
ABC26IN0843 · Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity of fluorescent molecule 2… · Analytical Chemistry – General
ABC26IN0879 · The biological functions of carbonic anhydrase and carboxypeptidase A, respectively, are · Bioinorganic Chemistry – General
ABC26IN0880 · The Fe-Nporphyrin bond distances in the deoxy and oxy-hemoglobin, respectively, are · Oxygen Carriers Hemoglobin
ABC26IN0947 · The geometries of [Br3]+and [I5]+respectively, are · Chemical Bonding – General
ABC26IN1057 · In transition metal phosphine (M-PR3) complexes, the back-bonding involves donation of electrons from · Electron Transfer Redox
ABC26IN1058 · The electric-dipole allowed transition among the following is · Coordination Chemistry – General
ABC26IN1059 · The lowest energy-state of an atom with electronic configuration ns1np1 has the term symbol · Electron Transfer Redox
ABC26IN1060 · Match the complexes given in column I with the electronic transitions (mainly responsible for their colours) listed in column II The… · Electron Transfer Redox
ABC26IN1061 · Among the complexes, (A) K4 [Cr(CN)6], K4 [Fe(CN)6], (C) K3 [Co(CN)6], (D) K4 [Mn(CN)6], and Jahn-Teller distortion is expected in · Jahn Teller
ABC26IN1062 · The complex [Fe(phen)2(NCS)2] (phen 1,10-phenanthroline) shows spin cross-over behaviour CFSE and at mu eff 250 and 150K, respectively are · Coordination Chemistry – General
ABC26IN1175 · The 119Sn NMR chemical shift (approximately in ppm) corresponding to (eta 5-Cp)2Sn (relative to Me4Sn) is · Inorganic Spectroscopy – General
ABC26IN1176 · The reduced form of a metal ion M in a complex is NMR active. On oxidation, the complex gives an EPR signal with g∥=2.2 and g⊥=2.0… · Mossbauer
ABC26IN1177 · Mössbauer spectrum of a metal complex gives information about · Inorganic Spectroscopy – General
ABC26IN1211 · Consider the following statements with respect to uranium (A) UO2+ disproportionates more easily than UO22+ (B) U3O8 is its most stable… · Lanthanides & Actinides – General
ABC26IN1212 · Consider the following statements for (NH4)2 [Ce (NO3)6](Z) (A) Coordination number of Ce is 12 (B) Z is paramagnetic (C) Z is an oxidising… · Lanthanides & Actinides – General
ABC26IN1279 · All forms of phosphorus upon melting, exist as · Main Group Elements – General
ABC26IN1280 · The correct set of pseudo halide anions is · Main Group Elements – General
ABC26IN1281 · The oxoacid of phosphorus having P atoms in +4,+3, and +4 oxidation states respectively, is · Main Group Elements – General
ABC26IN1408 · The binding modes of NO in 18 electron compounds [Co(CO)3(NO)] and [Ni(eta 5-Cp)(NO)], respectively, are · Cluster Compounds Wade Rules