2020
60 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.
2020
60 questions · IIT JAM
Chemical ThermodynamicsChemistry · 3 questionsOrganic Reaction Mechanism and Synthetic ApplicationsChemistry · 10 questionsElectrochemistryChemistry · 2 questionsNatural Products ChemistryChemistry · 3 questionsBasic Concepts and StereochemistryChemistry · 8 questionsMain Group ElementsChemistry · 6 questionsChemical Bonding and Shapes of MoleculesChemistry · 5 questionsChemical and Phase EquilibriaChemistry · 3 questionsSpectroscopyChemistry · 2 questionsDeterminantsChemistry · 1 questionsGaseous StateChemistry · 2 questionsTransition MetalsChemistry · 6 questionsBioinorganic ChemistryChemistry · 1 questionsChemical KineticsChemistry · 1 questionsAtomic and Molecular StructureChemistry · 2 questionsQualitative Organic AnalysisChemistry · 1 questionsMaxima and MinimaChemistry · 1 questionsSolid StateChemistry · 1 questionsLiquid StateChemistry · 1 questionsOrdinary Differential EquationsChemistry · 1 questions
- Q1.The graph that represents the temperature (T) – entropy (S) variation of a Carnot cycle isChemistry · Chemical Thermodynamics · MCQ
- Q2.For the radical chain reaction below, the correct classification for step 2 and step 3 is, respectively, Step 1: Step 2: …Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q3.The salt bridge in a galvanic cell allows the flow ofChemistry · Electrochemistry · MCQ
- Q4.The nucleobase NOT found in DNA isChemistry · Natural Products Chemistry · MCQ
- Q5.The correct statement for the following structures is 1 2 3 Includes diagramChemistry · Basic Concepts and Stereochemistry · MCQ
- Q6.The correct order of boiling points of compounds I–IV is I II III IV Includes diagramChemistry · Basic Concepts and Stereochemistry · MCQ
- Q7.One of the products of the hydrolysis of calcium phosphide at 25° C isChemistry · Main Group Elements · MCQ
- Q8.Treatment of formic acid with concentrated sulfuric acid givesChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q9.The *d*-orbitals involved in the hybridization to form square planar and trigonal bipyramidal geometries are, respectively,Chemistry · Chemical Bonding and Shapes of Molecules · MCQ
- Q10.The amino acid with *R* configuration isChemistry · Natural Products Chemistry · MCQ
- Q11.At constant pressure, the diagram for a pure substance that sublimes is (, and )Chemistry · Chemical and Phase Equilibria · MCQ
- Q12.The force constant for and are the same and both can be considered as harmonic oscillators. has a fundamental vibrational transition at . The…Chemistry · Spectroscopy · MCQ
- Q13.The correct statement regarding the determinants (Det) of matrices , and is …Chemistry · Determinants · MCQ
- Q14.The Boyle temperature () is defined as the temperature at which the properties of a real gas coincide with those of an ideal gas in the low pressure limit. The graph that shows the pressure dependence of the compression…Chemistry · Gaseous State · MCQ
- Q15.The major product formed in the following reaction sequence is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q16.The geometries of the species , and are, respectively,Chemistry · Chemical Bonding and Shapes of Molecules · MCQ
- Q17.The cage – type structure adopted by boron hydride, , isChemistry · Main Group Elements · MCQ
- Q18.The order of the M–C bond strength in the following species is (Atomic number for Cr = 24, Mn = 25, Ti = 22, Co = 27) …Chemistry · Transition Metals · MCQ
- Q19.The number of non-bonding electrons present in the frontier molecular orbitals of HF isChemistry · Chemical Bonding and Shapes of Molecules · MCQ
- Q20.The coordination number of aluminum ion and the number of bridging hydrogen atoms in [Al(BH₄)₄]⁻ are, respectively,Chemistry · Main Group Elements · MCQ
- Q21.The complex which does NOT obey 18-electron rule is (atomic number for Mn = 25, Fe = 26, Co = 27, Ru = 44)Chemistry · Transition Metals · MCQ
- Q22.The solid state structure of HF isChemistry · Chemical Bonding and Shapes of Molecules · MCQ
- Q23.The number of transition(s) expected for the complex isChemistry · Transition Metals · MCQ
- Q24.The plot showing the magnetic behavior of oxy- (solid line) and deoxy-haemoglobin (dashed line) is ( = molar magnetic susceptibility, = temperature)Chemistry · Bioinorganic Chemistry · MCQ
- Q25.The major product formed in the following reaction is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q26.The rate of solvolysis of I–IV follows Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q27.The more stable species in each pair of conformers are Includes diagramChemistry · Basic Concepts and Stereochemistry · MCQ
- Q28.The major product formed in the following reaction sequence is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q29.For the Diels-Alder reactions I–IV, the activation barriers follow the order Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q30.The major product formed in the following reaction is Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
- Q31.For the reaction shown in Scheme 1, the concentration profiles of different species are provided. Based on this graph, the correct condition(s) regarding the rate constants is(are) Includes diagramChemistry · Chemical Kinetics · Multiple correct
- Q32. describes the wavefunction of a particle. The probability of finding the particle between and , and , and , can be expressed asChemistry · Atomic and Molecular Structure · Multiple correct
- Q33.In water, the enthalpy of a protein in its folded state () is lower than that in its unfolded state (). The entropies of the folded and unfolded states are and ,…Chemistry · Chemical Thermodynamics · Multiple correct
- Q34.The soft Lewis base(s) is(are)Chemistry · Chemical Bonding and Shapes of Molecules · Multiple correct
- Q35.The boron adduct(s), which show(s) three signals in ¹H NMR spectrum with the intensity ratio 1:2:3 is(are)Chemistry · Main Group Elements · Multiple correct
- Q36.The transition metal complex(es) with zero magnetic moment, zero dipole moment and CFSE of -2.4 Δ₀ is(are)Chemistry · Transition Metals · Multiple correct
- Q37.Achiral stereoisomer(s) is(are) possible forChemistry · Basic Concepts and Stereochemistry · Multiple correct
- Q38.The compound(s) which will have only two signals in the ¹H NMR spectrum in 3:2 ratio is(are)Chemistry · Qualitative Organic Analysis · Multiple correct
- Q39.The correct sequence of reactions for the synthesis of the following molecule is(are) Includes diagramChemistry · Organic Reaction Mechanism and Synthetic Applications · Multiple correct
- Q40.The organometallic reagent(s) among the following is(are)Chemistry · Organic Reaction Mechanism and Synthetic Applications · Multiple correct
- Q41.The function (for ) has a maximum at a value of equal to (Round off to two decimal places)Chemistry · Maxima and Minima · Numerical
- Q42.The longest wavelength of light absorbed by a hydrogen-like atom is 2.48 nm. The nuclear charge (Z) of the atom is (Round off to nearest integer) (Rydberg constant )Chemistry · Atomic and Molecular Structure · Numerical
- Q43.Fullerene () crystallizes in an FCC unit cell (edge length = 14.14 Å) with one centered at each lattice point. The smallest distance (in Å) between the centers of two molecules is …Chemistry · Solid State · Numerical
- Q44.A film of stearic acid partially covers the water surface in a container. The work needed to decrease this coverage by 1 cm is J. The surface tension (in N/m) of the film is (Round off…Chemistry · Liquid State · Numerical
- Q45.The value of '' in [] isChemistry · Main Group Elements · Numerical
- Q46.The total number of all possible isomers of [] and [] together isChemistry · Transition Metals · Numerical
- Q47.The number of lone pairs present in phosphonic acid (phosphorus acid) isChemistry · Main Group Elements · Numerical
- Q48.Total number of constitutional isomers possible for trimethyl cyclohexane isChemistry · Basic Concepts and Stereochemistry · Numerical
- Q49.The dihedral (torsional) angle (in degrees) between the two methyl groups in the most stable conformation of -butane is (Round off to nearest integer)Chemistry · Basic Concepts and Stereochemistry · Numerical
- Q50.The degree of unsaturation (double bond equivalent) for a compound with molecular formula C₁₄H₁₂O₂ isChemistry · Basic Concepts and Stereochemistry · Numerical
- Q51.The heat of formation of MgO at 300 K and 1 bar pressure is –600.60 kJ mol⁻¹. The free energy (in kJ mol⁻¹) of formation of MgO at 280 K is (Round off to nearest integer) Given: In the range 280-300 K, the…Chemistry · Chemical Thermodynamics · Numerical
- Q52.Sea water containing 1 M NaCl has to be desalinated at 300 K using a membrane permeable only to water. The minimum pressure (in bars) required on the sea-water side of the membrane is (Round off to one decimal…Chemistry · Chemical and Phase Equilibria · Numerical
- Q53.A bacterial colony grows via cell division where each mother bacterium independently produces two daughter cells in 20 minutes. If the concentration of bacteria is 10⁴ cm⁻³, the colony becomes harmful. Starting from a colony with an…Chemistry · Ordinary Differential Equations · Numerical
- Q54.The Maxwell distribution of speeds of a gas at 300 K is given below The molar mass (in g mol⁻¹) of this gas is (Round off to one decimal place) (R = 8.3 J mol⁻¹ K⁻¹) Includes diagramChemistry · Gaseous State · Numerical
- Q55.At a certain wavelength, liquid P transmits 70%, whereas liquid Q transmits 30% of the incident light when separately placed in a spectrophotometric cell (path length = 1 cm). In a binary mixture of liquids P and Q (assume non-interacting…Chemistry · Spectroscopy · Numerical
- Q56.The mean ionic activity coefficient for a 0.01 M aqueous solution of Ca₃(PO₄)₂ is (Round off to three decimal places) (Given: log₁₀ γ± = - 0.509 z₊|z₋|√I )Chemistry · Chemical and Phase Equilibria · Numerical
- Q57.For the reaction, CuSO₄(aq) + Zn(s) → ZnSO₄(aq) + Cu(s), the value of ΔG° (in kJ mol⁻¹) is (Round off to the nearest integer) (Reduction potential: Cu²⁺(aq)/Cu(s) = + 0.34 V; Zn²⁺(aq)/Zn(s) = - 0.76 V) (Faraday…Chemistry · Electrochemistry · Numerical
- Q58.Titanium tetrachloride (TiCl₄) reacts with THF to form an octahedral complex X under inert atmosphere at 25 °C. If 5.0 g of TiCl₄ is used and the yield is 80%, the amount of X (in grams) formed is (Round off to…Chemistry · Transition Metals · Numerical
- Q59.The total number of tautomers possible for I and II together is I II Includes diagramChemistry · Basic Concepts and Stereochemistry · Numerical
- Q60.The total number of head to tail isoprene linkages in the following molecule is Includes diagramChemistry · Natural Products Chemistry · Numerical