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Chemistry · 2025

57 questions from this IIT JAM paper

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IIT JAM
Papers
2025
Chemistry

Chemistry · 2025

57 questions from this IIT JAM paper

Maxima and Minima1 questions Elementary Statistics1 questions Extractions of Metals1 questions Solid State2 questions Transition Metals6 questions Main Group Elements2 questions Natural Products Chemistry2 questions Atomic and Molecular Structure2 questions Liquid State1 questions Determinants1 questions Bioinorganic Chemistry2 questions Chemical Bonding and Shapes of Molecules3 questions Analytical Chemistry3 questions Organic Reaction Mechanism and Synthetic Applications7 questions Aromatic and Heterocyclic Chemistry1 questions Basic Concepts and Stereochemistry4 questions Chemical and Phase Equilibria2 questions Chemical Kinetics1 questions Gaseous State2 questions Spectroscopy3 questions Adsorption1 questions Chemical Thermodynamics2 questions Integrals1 questions Vectors and Matrices2 questions Qualitative Organic Analysis1 questions Ordinary Differential Equations1 questions Electrochemistry2 questions

Q1.Maximum value of the function $f (r) = r^{2} e^{- r}$ , when $0 < r < \infty$ is
Chemistry · Maxima and Minima · MCQ
Q2.Consider 10 balls each having different colors including a blue ball. If 6 balls are selected randomly, the probability of the blue ball being selected is
Chemistry · Elementary Statistics · MCQ
Q3.Sulfide ores are concentrated by
Chemistry · Extractions of Metals · MCQ
Q4.Crystal system with the unit cell parameters $a = b \neq = c$ and $α = β = γ = 9 0^{\circ}$ is
Chemistry · Solid State · MCQ
Q5.The correct trend of acidity of the ions is
Chemistry · Transition Metals · MCQ
Q6.Dissolution of $SbF_{5}$ in $BrF_{3}$ produces
Chemistry · Main Group Elements · MCQ
Q7.The molecular structure of table sugar is
Chemistry · Natural Products Chemistry · MCQ
Q9.A system having Hamiltonian $\hat{H}$ follows the eigenvalue equation, $\hat{H} Ψ_{n} = E_{n} Ψ_{n}$ , with $E_{n} = (n + \frac{1}{2})$ . If the state of the system is prepared as, $\Psi = N(\Psi_1 + \Psi_2 + \Psi_3 - \Psi_4 -…
Chemistry · Atomic and Molecular Structure · MCQ
Q10.The figures (I, II, III) given below schematically represent variation of surface tension of three different aqueous solutions with increasing concentration of each of the solutes (surfactant, sodium chloride, and n-propanol). Match the… Includes diagram
Chemistry · Liquid State · MCQ
Q11.The correct option for $x$ which satisfies the following equation is $x 4 x 2 x 8 369 = 10211718333646$ …
Chemistry · Determinants · MCQ
Q12.The type of carboxypeptidase metalloenzyme and the metal ion present in it, respectively, are
Chemistry · Bioinorganic Chemistry · MCQ
Q13.The biomolecule that does **NOT** contain iron is
Chemistry · Bioinorganic Chemistry · MCQ
Q14.Hydrolysis of $P_{4} O_{10}$ produces a compound R, which on heating above 320 °C yields a compound S. The compounds R and S, respectively, are
Chemistry · Main Group Elements · MCQ
Q15.Ion-dipole interactions vary with distance (r) as
Chemistry · Chemical Bonding and Shapes of Molecules · MCQ
Q16.In the following transformation, the number of α and β particles emitted, respectively, are $_{88}^{223} Ra ⟶_{82}^{207} Pb$
Chemistry · Analytical Chemistry · MCQ
Q17.Wilkinson’s catalyst contains
Chemistry · Transition Metals · MCQ
Q18.The major product of the following transformation is Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q19.The major products P and Q of the following transformations are Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q20.The correct order of the rate of mononitration using conc. H₂SO₄/conc. HNO₃ at room temperature is
Chemistry · Aromatic and Heterocyclic Chemistry · MCQ
Q21.Pericyclic reactions involved in the synthesis of Vitamin D₂ from Ergosterol are Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q22.The major product in the following reaction sequence is Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q23.An organic compound P (C₈H₁₆) produces a meso compound upon oxidation with OsO₄/ NMO. The compound P is [Where, NMO = N-methylmorpholine N-oxide]
Chemistry · Basic Concepts and Stereochemistry · MCQ
Q24.The correct order of the dipole moment among the following is
Chemistry · Basic Concepts and Stereochemistry · MCQ
Q25.The major products P and Q of the following reactions are Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q26.A vessel contains 1 mol of gas A and 2 mol of gas B at 2 bar and 25 °C. The gas mixture is compressed such that the final pressure becomes 3 bar without any change in temperature. Considering ideal gas behaviour, the change in Gibbs free…
Chemistry · Chemical and Phase Equilibria · MCQ
Q27.The substances, A, B and C undergo chemical reactions according to the scheme given below. At time $t = 0$ , the $[A] = 0.11$ M. Considering them to be first order reactions, the concentration of B (in M) at equilibrium is Includes diagram
Chemistry · Chemical Kinetics · MCQ
Q28.For van der Waals gases, at the critical point, $\frac{d P}{d V _{m}} = 0$ and
Chemistry · Gaseous State · MCQ
Q29.The set of asymmetric top molecules is
Chemistry · Spectroscopy · MCQ
Q30.Consider Langmuir adsorption of a gas on a uniform solid surface having N number of surface sites. The free and adsorbed gas molecules are in dynamic equilibrium. If the fractional surface coverage is $θ$ , the rate of adsorption of…
Chemistry · Adsorption · MCQ
Q31.According to VSEPR theory, the set(s) of species having trigonal bipyramidal geometry is(are)
Chemistry · Chemical Bonding and Shapes of Molecules · Multiple correct
Q32.In alkaline medium, which of the following metal ion(s) form(s) red precipitate/coloration with dimethylglyoxime?
Chemistry · Analytical Chemistry · Multiple correct
Q33.The correct statement(s) about the octahedral Mn-complex with spin only magnetic moment of approximately 6.0 $μ_{B}$ is(are)
Chemistry · Transition Metals · Multiple correct
Q34.For $[Mn (CO)_{6}]^{+}$ and $[V (CO)_{6}]^{-}$ complexes, the correct statement(s) is(are)
Chemistry · Transition Metals · Multiple correct
Q36.The set(s), in which all the compounds yield *achiral* products upon treatment with CH3MgBr/ether followed by hydrolysis with dilute mineral acid, is(are)
Chemistry · Organic Reaction Mechanism and Synthetic Applications · Multiple correct
Q37.The reaction(s) that will yield cyclic product is(are)
Chemistry · Organic Reaction Mechanism and Synthetic Applications · Multiple correct
Q38.The correct statement(s) among the following is(are)
Chemistry · Natural Products Chemistry · Multiple correct
Q39.Among the following, the correct condition(s) for spontaneity is(are)
Chemistry · Chemical Thermodynamics · Multiple correct
Q40.Correct statement(s) with respect to defects in solids is(are)
Chemistry · Solid State · Multiple correct
Q41. $\int_{0}^{\infty} x e^{- x} d x =$ .
Chemistry · Integrals · Numerical
Q42.Consider $C = A \times B$ , where $A = 3 \hat{i} - 2 \hat{j} + 5 \hat{k}$ and $B$ , a unit vector in $x y$ -plane, makes an angle of $3 7^{\circ}$ with the $x$ -axis. Projection of $C$ on the $x$ -axis is …
Chemistry · Vectors and Matrices · Numerical
Q43.A yellow compound X is produced after the reaction of K₂[Ni(CN)₄] with excess of K/liq. NH₃ at −33 °C. The oxidation state of Ni in the compound X is .
Chemistry · Transition Metals · Numerical
Q44.Number of spin allowed transition(s) possible for d² octahedral configuration is .
Chemistry · Transition Metals · Numerical
Q45.Number of ¹H NMR signals observed for the following compound is . Includes diagram
Chemistry · Qualitative Organic Analysis · Numerical
Q46.The number of stereoisomers possible for the following compound is . Includes diagram
Chemistry · Basic Concepts and Stereochemistry · Numerical
Q47.An electron at rest is accelerated through 10 kV potential. The de Broglie wavelength (in Å) of the electron is .
Chemistry · Atomic and Molecular Structure · Numerical
Q49.The resonance frequency of ¹H nuclei is 300 MHz in an NMR spectrometer. If the spectrometer is operated at 12 T magnetic field, the resonance frequency (in MHz) of the same ¹H nuclei is .
Chemistry · Spectroscopy · Numerical
Q50.The first rotational absorption of ¹²C¹⁶O molecule is observed at 3.84 cm⁻¹. If an isotopic substitution is made with ¹⁸O in the molecule, the frequency (in cm⁻¹) of first rotational absorption is .
Chemistry · Spectroscopy · Numerical
Q51.If y + x e^y = sin x + tan x, then the value of dy/dx at x = 0 is .
Chemistry · Ordinary Differential Equations · Numerical
Q52.Consider the following matrices A and B. $A = 1300024000005000006800079 and B = 101200011130000040000015170001618$ …
Chemistry · Vectors and Matrices · Numerical
Q53.The number of species among the following, having bond order of three is . N $_{2}$ , F $_{2}$ , NO $^{+}$ , O $_{2}$ $^{-}, N_{2}$ $^{+}$ , CO, O $_{2}$ , O $_{2}$ $^{2 -}$
Chemistry · Chemical Bonding and Shapes of Molecules · Numerical
Q54.1.84 g of a mixture of CaCO $_{3}$ and MgCO $_{3}$ is heated till no further weight loss. The weight of the residue is 0.96 g. The % composition of CaCO $_{3}$ in the mixture is . (round off to two decimal places)…
Chemistry · Analytical Chemistry · Numerical
Q55.The number of chiral carbon centers in the following molecule is . Includes diagram
Chemistry · Basic Concepts and Stereochemistry · Numerical
Q56.One mole of a monoatomic ideal gas starting from state A, goes through B and C to state D, as shown in the figure. Total change in entropy (in J K⁻¹) during this process is . (round off to two decimal places)… Includes diagram
Chemistry · Chemical Thermodynamics · Numerical
Q57.In one second, 95 moles of He gas particles are hitting a wall of a cubic container of volume 1 dm $^{3}$ . If the average velocity component of the particles perpendicular to the wall is 1000 m s $^{- 1}$ , then the pressure of the gas in…
Chemistry · Gaseous State · Numerical
Q58.Solubility of PbCO $_{3}$ in a buffer of pH 5 is $X \times 1 0^{- 4}$ . The value of X is . (round off to one decimal place) [Given: $K_{s p}$ of PbCO $_{3}$ = $1.5 \times 1 0^{- 13}$ ; for H $_{2}$ CO $_{3}$ , $K_{a 1}$ = $4.2 \times 1 0^{- 7}$ …
Chemistry · Chemical and Phase Equilibria · Numerical
Q59.The molar conductivity of a 0.02 M weak acid HA is 3.2 mS m $^{2}$ mol $^{- 1}$ at 298 K. The p $K_{a}$ of HA is . (round off to one decimal place) [Given: Limiting molar conductivity of HA = 39 mS m $^{2}$ mol $^{- 1}$ …
Chemistry · Electrochemistry · Numerical
Q60.A cell is constructed by Cl₂/Cl⁻(aq) and a standard hydrogen electrode half-cells. The standard potential of the complete cell is 1.38 V and $(\frac{\partial E ^{0}}{\partial T})_{P} = - 1.24 mVK^{- 1}$ . The $Δ S_{r e a c t i o n}^{0}$ …
Chemistry · Electrochemistry · Numerical