2021
58 questions · IIT JAMGuest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
2021
58 questions · IIT JAM
Basic Concepts and StereochemistryChemistry · 2 questionsPeriodic TableChemistry · 1 questionsTransition MetalsChemistry · 10 questionsAtomic and Molecular StructureChemistry · 3 questionsOrganic Reaction Mechanism and Synthetic ApplicationsChemistry · 11 questionsQualitative Organic AnalysisChemistry · 2 questionsChemical and Phase EquilibriaChemistry · 3 questionsDeterminantsChemistry · 1 questionsMain Group ElementsChemistry · 1 questionsChemical Bonding and Shapes of MoleculesChemistry · 2 questionsBioinorganic ChemistryChemistry · 1 questionsAromatic and Heterocyclic ChemistryChemistry · 1 questionsSolid StateChemistry · 2 questionsIntegralsChemistry · 1 questionsGaseous StateChemistry · 2 questionsChemical KineticsChemistry · 3 questionsSpectroscopyChemistry · 3 questionsNatural Products ChemistryChemistry · 2 questionsChemical ThermodynamicsChemistry · 2 questionsElectrochemistryChemistry · 2 questionsAdsorptionChemistry · 1 questionsAnalytical ChemistryChemistry · 1 questionsLiquid StateChemistry · 1 questions
- Q1.The CORRECT order of for the compounds to in water at 298 K isChemistry · Basic Concepts and Stereochemistry · MCQ
- Q2.For , , and , the CORRECT order of ionic radii isChemistry · Periodic Table · MCQ
- Q3.Spin-only magnetic moments (in BM) of and , respectively, areChemistry · Transition Metals · MCQ
- Q4.Two sets of quantum numbers with the same number of radial nodes areChemistry · Atomic and Molecular Structure · MCQ
- Q5.The major product formed in the following reaction is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q6.The major product formed in the following reaction is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q7.A compound shows H NMR peaks at -values (in ppm) 7.31 (2H), 7.21 (2H), 4.5 (2H) and 2.3 (3H). The structure of the compound isChemistry · Qualitative Organic Analysis · MCQ
- Q8.The major product formed in the following reaction is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q9.A pure substance **M** has lesser density in solid state than in liquid state. The of **M** is . The CORRECT representative Pressure-Temperature diagram for the fusion of…Chemistry · Chemical and Phase Equilibria · MCQ
- Q10.Among the following, the matrices with non-zero determinant are …Chemistry · Determinants · MCQ
- Q11.Reaction of BCl₃ with NH₄Cl at 140 °C produces compound P. Further, P reacts with NaBH₄ to give a colorless liquid Q. The reaction of Q with H₂O at 100 °C produces compound R and a diatomic gas S. Among the following, the CORRECT statement…Chemistry · Main Group Elements · MCQ
- Q12.The complex that does NOT obey the 18-electron rule is (Given: Atomic numbers of Ti, Mn, Ta and Ir are 22, 25, 73 and 77, respectively)Chemistry · Transition Metals · MCQ
- Q13.Hybridization of the central atoms in I₃⁻, ClF₃ and SF₄, respectively, areChemistry · Chemical Bonding and Shapes of Molecules · MCQ
- Q14.Reaction of [Ni(CN)₄]²⁻ with metallic potassium in liquid ammonia at –33 °C yields complex E. The geometry and magnetic behavior of E, respectively, areChemistry · Transition Metals · MCQ
- Q15.The decreasing order of C=C bond length in the following complexes is [Cl₃Pt(CH₂=CH₂)]⁻ [Cl₃Pt(C(CN)₂=C(CN)₂)]⁻ [Cl₃Pt(CF₂=CH₂)]⁻ [Cl₃Pt(CF₂=CF₂)]⁻ I II III IVChemistry · Transition Metals · MCQ
- Q16.The CORRECT combination for metalloenzymes given in Column I with their catalytic reactions in Column II isChemistry · Bioinorganic Chemistry · MCQ
- Q17.According to the crystal field theory, transition observed in isChemistry · Transition Metals · MCQ
- Q18.The major product formed in the following reaction sequence is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q19.The products **P**, **Q**, **R** and **S** formed in the following reactions are Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q20.The major products **E** and **F** formed in the following reactions are Includes diagramChemistry · Aromatic and Heterocyclic Chemistry · MCQ
- Q21.The reaction that produces the following as a major product is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q22.The major product formed in the following reaction is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q23.The major product formed in the following reaction is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q25.Monochromatic X-rays having energy J diffracted (first order) from (200) plane of a cubic crystal at an angle . The length of unit cell in Å of the crystal (rounded off to one decimal place) is (Given:…Chemistry · Solid State · MCQ
- Q26.For , the value of the integral isChemistry · Integrals · MCQ
- Q27.The volume correction factor for a non-ideal gas in terms of critical pressure (), critical molar volume (), critical temperature () and gas constant () isChemistry · Gaseous State · MCQ
- Q28.Half-life () of a chemical reaction varies with the initial concentration of reactant () as given below: The order of the reaction is Includes tableChemistry · Chemical Kinetics · MCQ
- Q29.The CORRECT statement regarding the molecules BF and CH isChemistry · Spectroscopy · MCQ
- Q30.For the consecutive reaction, is the initial concentration of X. The concentrations of X, Y and Z at time are , and , respectively. The expression for the…Chemistry · Chemical Kinetics · MCQ
- Q31.The CORRECT statement(s) about the species is (are)Chemistry · Transition Metals · Multiple correct
- Q32.The complex(es) that show(s) Jahn-Teller distortion is (are)Chemistry · Transition Metals · Multiple correct
- Q33.The CORRECT statement(s) about sodium nitroprusside is (are)Chemistry · Transition Metals · Multiple correct
- Q34.The pigment responsible for red color in tomato has one functional group. The CORRECT statement(s) about this functional group is (are)Chemistry · Qualitative Organic Analysis · Multiple correct
- Q35.Hantzsch pyridine synthesis involves several steps. Some of those areChemistry · Organic Reaction Mechanism and Synthetic Applications · Multiple correct
- Q36.The compound(s), which give(s) benzoic acid on oxidation with , is (are)Chemistry · Organic Reaction Mechanism and Synthetic Applications · Multiple correct
- Q37.The products and formed in the reaction are Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q38.The functional group(s) in reducing sugar that tests positive with Tollen’s reagent is (are)Chemistry · Natural Products Chemistry · Multiple correct
- Q40.The CORRECT Maxwell relation(s) derived from the fundamental equations of thermodynamics is (are)Chemistry · Chemical Thermodynamics · Multiple correct
- Q41.The total number of optically active isomers of dichloridobis(glycinato)cobaltate(III) ion isChemistry · Transition Metals · Numerical
- Q42.The total number of microstates possible for a electronic configuration isChemistry · Atomic and Molecular Structure · Numerical
- Q43.For the following fusion reaction, the -value (energy of the reaction) in MeV (rounded off to one decimal place) is (Given: Mass of nucleus…Chemistry · Atomic and Molecular Structure · Numerical
- Q44.MgO crystallizes as rock salt structure with unit cell length 2.12 Å. From electrostatic model, the calculated lattice energy in kJ mol (rounded off to the nearest integer) is . (Given: …Chemistry · Chemical Bonding and Shapes of Molecules · Numerical
- Q45.Calcium crystallizes in fcc lattice of unit cell length 5.56 Å and density 1.4848 g cm . The percentage of Schottky defects (rounded off to one decimal place) in the crystal is . (Given: Atomic mass of Ca…Chemistry · Solid State · Numerical
- Q46.Among the following, the total number of terpenes(terpenoids) is Includes diagramChemistry · Natural Products Chemistry · Numerical
- Q47.A buffer solution is prepared by mixing 0.3 M NH₃ and 0.1 M NH₄NO₃. If K_b of NH₃ is 1.6 × 10⁻⁵ at 25 °C, then the pH (rounded off to one decimal place) of the buffer solution at 25 °C is .Chemistry · Chemical and Phase Equilibria · Numerical
- Q48.The dissociation constant of a weak monoprotic acid is 1.6 × 10⁻⁵ and its molar conductance at infinite dilution is 360.5 × 10⁻⁴ mho m² mol⁻¹. For 0.01 M solution of this acid, the specific conductance is n × 10⁻² mho m⁻¹. The value of n…Chemistry · Electrochemistry · Numerical
- Q49.Adsorption of a toxic gas on 1.0 g activated charcoal is 0.75 cm³ both at 2.5 atm, 140 K and at 30.0 atm, 280 K. The isosteric enthalpy for adsorption of the gas in kJ mol⁻¹ (rounded off to two decimal places) is…Chemistry · Adsorption · Numerical
- Q50.If the root mean square speed of hydrogen gas at a particular temperature is 1900 m s⁻¹, then the root mean square speed of nitrogen gas at the same temperature, in m s⁻¹ (rounded off to the nearest integer), is .…Chemistry · Gaseous State · Numerical
- Q51.If the crystal field splitting energy of [Co(NH₃)₄]²⁺ is 5900 cm⁻¹, then the magnitude of its crystal field stabilization energy, in kJ mol⁻¹ (rounded off to one decimal place), is .Chemistry · Transition Metals · Numerical
- Q52.A salt mixture (1.0 g) contains 25 wt% of MgSO₄ and 75 wt% of M₂SO₄. Aqueous solution of this salt mixture on treating with excess BaCl₂ solution results in the precipitation of 1.49 g of BaSO₄. The atomic mass of M in g mol⁻¹ (rounded off…Chemistry · Analytical Chemistry · Numerical
- Q53.The intensity of a monochromatic visible light is reduced by 90% due to absorption on passing through a 5.0 mM solution of a compound. If the path length is 4 cm, then the molar extinction coefficient of the compound in M⁻¹ cm⁻¹ is …Chemistry · Spectroscopy · Numerical
- Q54.The surface tension () of a solution, prepared by mixing 0.02 mol of an organic acid in 1 L of pure water, is represented as is the surface tension of pure water, …Chemistry · Liquid State · Numerical
- Q55.The separation of energy levels in the rotational spectrum of CO is 3.8626 cm . The bond length (assume it does not change during rotation) of CO in Å (rounded off to two decimal places) is . (Given:…Chemistry · Spectroscopy · Numerical
- Q56.A dilute solution prepared by dissolving a nonvolatile solute in one liter water shows a depression in freezing point of 0.186 K. This solute neither dissociates nor associates in water. The boiling point of the solution in K (rounded off…Chemistry · Chemical and Phase Equilibria · Numerical
- Q57.The thermodynamic data at 298 K for the decomposition reaction of limestone at equilibrium is given below | Thermodynamic quantity | CaCO_{3}(s) |…Chemistry · Chemical Thermodynamics · Numerical
- Q58.The mean ionic activity coefficient of 0.004 molal CaCl in water at 298 K (rounded off to three decimal places) is . (Given: Debye-Hückel constant for an aqueous solution at 298 K is 0.509 kg mol …Chemistry · Electrochemistry · Numerical
- Q59.For the reaction, , and …Chemistry · Chemical Kinetics · Numerical
- Q60.For the molecule, the number of all possible stereoisomers is .Chemistry · Basic Concepts and Stereochemistry · Numerical