57 questions from this paper that are in the bank. Each opens with its answer and explanation.
ABC26IN0071 · Dinuclear anion [I2(OH)2O8]4- has two bridging oxo groups. The geometry around each iodine is- · VSEPR Geometry
ABC26OR0054 · For the following compounds, the correct order of reactivity towards nucleophilic acyl substitution is · General Organic Chemistry – General
ABC26OR0056 · IUPAC nomenclature of the following propellane is · Nomenclature Polycyclics
ABC26OR0057 · The correct order of rate of solvolysis in 80% ethanol at 25 °C is A B C · Carbocation Stability
ABC26OR0134 · The reaction of [(eta 5-C5H5)Fe(CO)2] with CH3I gives compound A. The 1H NMR spectrum of A shows two singlets in an integrated intensity… · NMR 1H
ABC26OR0135 · The correct match of protons in column A with the 1H NMR chemical shifts in column B for the product of the following reaction is → · NMR 1H
ABC26OR0155 · Mechanism of the following transformation involves + · Electrocyclic
ABC26OR0166 · The major products formed in the following photochemical reaction are [CCl4]h nu · Photocycloaddition
ABC26OR0362 · The major product formed in the following reaction is: · Named Reactions
ABC26OR0363 · The major product formed in the following reaction is: i) n-BuLi, -80°C ii) NH4Cl · Named Reactions
ABC26OR0373 · The major heterocyclic compound formed in the following reaction is 2. H2, Pd/C, MeOH · Named Reactions
ABC26PH0045 · For an enzyme-substrate reaction, E+S k-1k1⇌ ES, ES k2 E+P, the slope and intercept of plot between 1/r and 1/([S]) are 10-2 s and 102… · Enzyme Kinetics
ABC26PH0221 · 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 · Surface Chemistry – General
ABC26PH0245 · The change in entropy for a reversible adiabatic process is · Laws State Functions
ABC26PH0246 · In the phase diagram of water, the solid-liquidboundary has a negative slope. The reason for this unusual behavior can be traced to… · Laws State Functions
ABC26PH0247 · At 300K, 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
ABC26IN0815 · The transformation are given in Column 1 and reagent in Column II. Match the items of Column I with those of Column II · Acids & Bases – General
ABC26IN0831 · Height equivalent to theoretical plate (HETP) in gas liquid chromatography depends Significantly on which of the following? (A) Temperature… · Chromatography
ABC26IN0902 · For the catalytic activity of Cu and Zn containing enzyme, superoxide dismutase. What is /are the correct statement (S)? (A) Cu and Zn both… · Metal Toxicity Medicine
ABC26IN0903 · Consider the following statements for the oxygenation of hemocyanine: (A) Oxidation state of both copper atoms changes by two (B) It… · Oxygen Carriers Hemoglobin
ABC26IN0904 · Choose the correct set of statements for cis-platin. (A) It can be prepared from K2[PtCl4]. (B) It can be prepared from [Pt(NH3)4Cl2]. (C)… · Bioinorganic Chemistry – General
ABC26IN0965 · Dinuclear anion [I2(OH)2 O8]4- has two bridging oxo groups. The geometry around each iodine is · VSEPR Geometry
ABC26IN0966 · Removal of an electron form NO molecule results in A. An increase in the (NO) in the IR spectrum B. An EPR active species C. Electrons in… · Chemical Bonding – General
ABC26IN1109 · The total degeneracy of the ground term of CoII (high spin) in octahedral geometry is · Term Symbols Spectra
ABC26IN1110 · High spin complex of a 3d metal ion M has a magnetic moment of 2.9 B.M. in octahedral coordination environment and 4.1 B.M. in tetrahedral… · Coordination Chemistry – General
ABC26IN1111 · For electronic spectra of K2 CrO4(A) and K2 MoO4(B) the correct combination is · Electron Transfer Redox
ABC26IN1112 · The lowest energy state of a 1s12s1 electronic configuration, according to hund's rule, is · Electron Transfer Redox
ABC26IN1113 · Consider the following statements: (A) Cr2+ is easier to oxidize than V2+ in the gas phase (B) Cr2+ (aq) is a more powerful reducing agent… · Coordination Chemistry – General
ABC26IN1114 · Consider the statements A - D regarding equation I-III: (I) [Fe(CN)6]3-+ [Co(CN)5]3- → [Fe(CN)6]4-+ [Co(CN)5]2- (II) [Co(bipy)3]2++… · Electron Transfer Redox
ABC26IN1115 · The allowed electronic transition in fluorine molecule is · Electron Transfer Redox
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
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
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 (PPh3)2… · Organometallic Compounds – General
ABC26IN1469 · Which of the following are NOT closo clusters? [ {Co(eta 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)… · Organometallic Compounds – General
ABC26IN1472 · The reaction of [(eta 5-C5H5 (Fe(CO)2)]- with CH3I gives compound A. The 1H NMR spectrum of A show two singlets in an integrated intensity… · 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
ABC26OR0990 · Using a double beam UV-visible spectrophotometer, Beer's law fails for K2Cr2O7 solution when · Organic Spectroscopy – General
ABC26OR0992 · Number of signals observed in the 13C NMR spectrum of the following compound is · NMR 13C
ABC26OR0993 · The reaction of [ (eta 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
ABC26OR1056 · For the following thermal [2+2] cycloaddition reaction, the correct statement about Transition State (TS) and preference for endo product… · Cycloaddition Diels Alder
ABC26PH0947 · Elementary steps of a reaction are as follows A + B k-1k1⇌ 2C; 2C k2 D If steady state approximation is applicable to C, the rate of… · 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 factor… · Complex Reactions
ABC26PH0950 · For a second-order reaction, the straight line among the following plots is · Chemical Kinetics – General