166 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26OR0944 · An organic compound A (C8 H16 O2 ) on treatment with an excess of methyl-magnesium chloride generated two alcohols B and C, whereas… · NMR 1H
ABC26OR1014 · The reaction given below is an example of · Sigmatropic Shifts
ABC26OR1015 · The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Cycloaddition Diels Alder
ABC26OR1016 · The structures of the major products X and Y in the following transformation are + Delta X Y · Pericyclic Reactions – General
ABC26OR1067 · The intermediate involved in the reaction given below is : · Photochemical Reactions – General
ABC26OR1068 · The concerted photochemical reaction between two olefins leading to a cyclobutance ring is : · Photocycloaddition
ABC26PH0866 · An ideal gas expands by following an equation PVa= constant. In which case does one expect heating? · Atomic And Molecular Term Symbols – General
ABC26PH0867 · For an assembly of molecules (molar mass =M ) at temperature T , the standard deviation of Maxweller's speed is approximately · Atomic And Molecular Term Symbols – General
ABC26PH0868 · The virial expansion for a real gas can be written in either of the following forms: aligned P VR T &=1+Bp P+Cp P2+ \\ &=1+Bv V+Cv V2+… · Atomic And Molecular Term Symbols – General
ABC26PH0881 · The half-life of a zero order reaction (A P) is given by ( k= rate constant ): · Rate Laws Order
ABC26PH0882 · The decomposition of gaseous acetaldehyde at T(K) follows second order kinetics. The half-life of this reaction is 400 s when the initial… · Rate Laws Order
ABC26PH0883 · For an enzyme catalyzed reaction, a Lineweaver-Burk plot gave the following data: slope =40 s, intercept =4 (mmol dm-3 s-1 )-1. If the… · Enzyme Kinetics
ABC26PH0884 · Observe the following aqueous solutions of same compound. All the measurements are made at same wavelength and same temperature. Solution… · Chemical Kinetics – General
ABC26PH0968 · If the specific conductances of a sparingly soluble (1:1) salt (MW =200\,g\,mol-1) in its saturated aqueous solution at 25 and that of… · Debye Huckel
ABC26PH0969 · Debey-Hückel screening length (-1 ) is a measure of size of diffuse ion cloud around an ion, provided 2 e2 NA0 kB T 30 (nm molkg -1 )-1 at… · Electrochemistry – General
ABC26PH0970 · If the ratio of composition of oxidized and reduced species in electrochemical cell, is given as ([0])/([R])=e2 the correct potential… · Electrochemistry – General
ABC26PH1042 · Given the character table of the point group C3 V Consider the reducible representation, Its irreducible components are · Reducible Representations
ABC26PH1043 · Refer to the character table of the point group C3 V given above. Find which of the following transition is forbidden · Character Tables
ABC26PH1044 · The symmetry point group of ethane in its staggered conformation is · Symmetry Elements Point Groups
ABC26PH1045 · The character table of the C2 v point group is given below: 1 atom of cis-butadiene and is the molecular plane) belong to · Character Tables
ABC26PH1046 · Among the following, the CORRECT statement is: · Symmetry Elements Point Groups
ABC26PH1047 · A square pyramidal, MX4, molecule belongs to C4v point group. The symmetry operations are: E, 2C4, C2, 2 and 2. The trace for the reducible… · Symmetry Elements Point Groups
ABC26PH1048 · Character table of C2 V point group is: If the initial and final states belong to A1 and B1 irreducible representation respectively, the… · Character Tables
ABC26PH1049 · The molecular that has an S6 symmetry element is · Symmetry Elements Point Groups
ABC26PH1050 · The number of IR active vibrational modes of pyridine is: · Applications To Spectroscopy
ABC26PH1051 · A molecules contains the following symmetry operations: E, 2 C6, 2 C3, C2, 3 , 3 . The number of classes and order of the symmetry point… · Symmetry Elements Point Groups
ABC26PH1052 · Identify the Mulliken notation for the following irreducible representation 2 · Character Tables
ABC26PH1053 · Identify the point group symmetry of the following molecule (all C-C bond lengths are equal) · Symmetry Elements Point Groups
ABC26PH1054 · The transition that is allowed by x-polarized light in trans-butadiene is (The character table for C2h is given below) · Character Tables
ABC26PH1055 · The symmetry point group of propyne is · Symmetry Elements Point Groups
ABC26PH1056 · Number of rotational symmetry axes for triclinic crystal system is · Group Theory – General
ABC26PH1057 · The E E direct product in D3 point group contains the irreducible representations · Character Tables
ABC26PH1058 · The result of the product C2(x) C2(y) is · Group Theory – General
ABC26PH1091 · A molecule, AX, has a vibrational energy of 1000 cm-1 and rotational energy of 10 cm-1. Another molecule, BX, has a vibrational energy of… · Molecular Spectroscopy – General
ABC26PH1092 · At room temperature, which molecule has the maximum rotational entropy? · Molecular Spectroscopy – General
ABC26PH1093 · The microwave spectrum of a molecule yields three rotational constants. The molecule is · Rotational
ABC26PH1094 · The Q band in the vibrational spectrum of acetylene is observed in the · Molecular Spectroscopy – General
ABC26PH1095 · In IR spectrum of [Co(CN)5 H ]3- the Co-H stretch is observed at 1840 cm-1. The (Co-D) stretch in [Co(CN)5 D ]3- will appear at nearly · Molecular Spectroscopy – General
ABC26PH1096 · The Stark splitting for a given field is larger for a molecule AX as compared to BX . Which one of the following is true? ( mu is the… · Molecular Spectroscopy – General
ABC26PH1097 · The uncertainty in the NMR frequency of a compound in liquid state (relaxation time =1 s ) is 0.1 Hz . The uncertainty in the frequency (in… · NMR ESR Physical
ABC26PH1098 · The NMR spectrum of AX, exhibits lines at delta =2.1 and 2.3 ppm (for X type protons) and = 4.1, 4.3, 4.5 and 4.7 ppm (for A type protons)… · Molecular Spectroscopy – General
ABC26PH1099 · The rotational constant of 14 N2 is 2 cm-1. The wave number of incident radiation in a Raman spectrometer is 20487 cm-1. What is the wave… · Raman
ABC26PH1100 · The vibrational energy levels, v =0 and v=1 of a diatomic molecule are separated by 2143 cm-1. Its anharmonicity wexe is 14 cm-1. The… · Vibrational
ABC26PH1153 · For a given nuclear fission reaction of U 92235 U+ 01 n 56142 Ba+ 3691 Kr+3 01 n the amount of energy (in kJ / mol ) released during this… · Nuclear Chemistry – General
ABC26PH1154 · Saturation factor in neutron activation analysis is ( A= induced radioactivity , = neutron flux , sigma = effective nuclear cross section… · Nuclear Chemistry – General
ABC26PH1155 · In fission of 235 U atom the energy released is 200 MeV . In one day fission of 1 kg235 U will give power (in MW) approximately · Nuclear Chemistry – General
ABC26PH1156 · The penetrating power (R) and ionizing power (I) of alpha , beta , and gamma rays follow the ordering · Nuclear Chemistry – General
ABC26PH1157 · The reactive cross section is expected to be the largest for the reaction · Nuclear Chemistry – General
ABC26PH1170 · There are several types of mean molar masses for polymer and they are dependent on experimental methods like: (1) Osmometry (2) Light… · Polymer Chemistry – General