Chemistry · 2021
58 questions from this IIT JAM paperGuest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
Chemistry · 2021
58 questions from this IIT JAM paper
Basic Concepts and Stereochemistry2 questionsPeriodic Table1 questionsTransition Metals10 questionsAtomic and Molecular Structure3 questionsOrganic Reaction Mechanism and Synthetic Applications11 questionsQualitative Organic Analysis2 questionsChemical and Phase Equilibria3 questionsDeterminants1 questionsMain Group Elements1 questionsChemical Bonding and Shapes of Molecules2 questionsBioinorganic Chemistry1 questionsAromatic and Heterocyclic Chemistry1 questionsSolid State2 questionsIntegrals1 questionsGaseous State2 questionsChemical Kinetics3 questionsSpectroscopy3 questionsNatural Products Chemistry2 questionsChemical Thermodynamics2 questionsElectrochemistry2 questionsAdsorption1 questionsAnalytical Chemistry1 questionsLiquid State1 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