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Chemistry · 2018

57 questions from this IIT JAM paper

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IIT JAM
Papers
2018
Chemistry

Chemistry · 2018

57 questions from this IIT JAM paper

Main Group Elements3 questions Bioinorganic Chemistry1 questions Chemical Bonding and Shapes of Molecules3 questions Organic Reaction Mechanism and Synthetic Applications6 questions Basic Concepts and Stereochemistry3 questions Natural Products Chemistry4 questions Integrals1 questions Solid State1 questions Adsorption1 questions Periodic Table1 questions Analytical Chemistry6 questions Transition Metals4 questions Qualitative Organic Analysis4 questions Aromatic and Heterocyclic Chemistry1 questions Chemical Thermodynamics4 questions Chemical Kinetics2 questions Gaseous State3 questions Vectors and Matrices1 questions Electrochemistry2 questions Extractions of Metals1 questions Atomic and Molecular Structure3 questions Spectroscopy1 questions Chemical and Phase Equilibria1 questions

Q1.On hydrolysis, aluminium carbide produces
Chemistry · Main Group Elements · MCQ
Q2.Carbonic anhydrase is an example of
Chemistry · Bioinorganic Chemistry · MCQ
Q3.The CORRECT order of melting points of group 15 trifluorides is
Chemistry · Main Group Elements · MCQ
Q4.NaF, KF, MgO and CaO are crystalline solids. They have NaCl structure. Their lattice energies vary in the order
Chemistry · Chemical Bonding and Shapes of Molecules · MCQ
Q5.The major product formed in the following reaction is Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q6.The compound that contains the most acidic hydrogen is
Chemistry · Basic Concepts and Stereochemistry · MCQ
Q7.The C-2 epimer of D-glucose is
Chemistry · Natural Products Chemistry · MCQ
Q8.The value of integral $\int_{- 2}^{+ 2} x e^{- 2 x^{2}} d x$ is
Chemistry · Integrals · MCQ
Q9.The number of crystal systems and the number of Bravais lattices are, respectively,
Chemistry · Solid State · MCQ
Q10.For adsorption of a gas on a solid surface, the plot that represents Freundlich isotherm is $(x = mass of gas, m = mass of adsorbent, P = pressure)$
Chemistry · Adsorption · MCQ
Q11.With respect to periodic properties, the **CORRECT** statement is
Chemistry · Periodic Table · MCQ
Q12.Which plot represents a spectrophotometric titration, where the titrant alone absorbs light in the visible region?
Chemistry · Analytical Chemistry · MCQ
Q13.Among the following metal carbonyl species, the one with the highest metal-carbon back bonding is
Chemistry · Transition Metals · MCQ
Q14.The CORRECT order of $Δ_{o}$ (the octahedral crystal field splitting of d orbitals) values for the following anionic metal complexes is
Chemistry · Transition Metals · MCQ
Q15.The decay modes of $^{14} C$ and $^{14} O$ are
Chemistry · Analytical Chemistry · MCQ
Q16.Consider the following four xenon compounds: XeF₂, XeF₄, XeF₆ and XeO₃ The pair of xenon compounds expected to have non-zero dipole moment is
Chemistry · Chemical Bonding and Shapes of Molecules · MCQ
Q17.The CORRECT order of stability for the following carbocations is I II III IV Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q20.The product $X$ in the following reaction sequence is Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q21.The major product formed in the following reaction is Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q22.The major products Y and Z in the following reaction sequence are Includes diagram
Chemistry · Organic Reaction Mechanism and Synthetic Applications · MCQ
Q23.The CORRECT order of carbonyl stretching frequencies for the following compounds is Includes diagram
Chemistry · Qualitative Organic Analysis · MCQ
Q24.The sequence of three steps involved in the following conversion is Includes diagram
Chemistry · Aromatic and Heterocyclic Chemistry · MCQ
Q25.The CORRECT expression that corresponds to reversible and adiabatic expansion of an ideal gas is
Chemistry · Chemical Thermodynamics · MCQ
Q27.The reaction, A $⟶$ Products, follows first-order kinetics. If [A] represents the concentration of reactant at time $t$ , the INCORRECT variation is shown in
Chemistry · Chemical Kinetics · MCQ
Q28.The behavior of Cl₂ is closest to ideal gas behavior at
Chemistry · Gaseous State · MCQ
Q29.A vector $A = i + x j + 3 k$ is rotated through an angle and is also doubled in magnitude resulting in $B = 4 i + (4 x - 2) j + 2 k$ . An acceptable value of $x$ is
Chemistry · Vectors and Matrices · MCQ
Q30.With reference to the variation of molar conductivity ( $Λ_{m}$ ) with concentration for a strong electrolyte in an aqueous solution, the **CORRECT** statement is
Chemistry · Electrochemistry · MCQ
Q31.Which of the following metal(s) is(are) extracted from its(their) sulfide ore(s) by self-reduction/air reduction method?
Chemistry · Extractions of Metals · Multiple correct
Q32.In a saturated calomel electrode, the saturation is with respect to
Chemistry · Analytical Chemistry · Multiple correct
Q33.Consider the following six solid binary oxides: CaO, Al₂O₃, PbO, Cs₂O, SiO₂ and Sb₂O₃. The pair(s) of ionic oxides is(are)
Chemistry · Chemical Bonding and Shapes of Molecules · Multiple correct
Q34.Choose the CORRECT answer(s) with respect to the magnesium-EDTA titration carried out in the pH range 7 – 10.5, using Solochrome black as indicator
Chemistry · Analytical Chemistry · Multiple correct
Q35.On reaction with NaNO₂ and HCl, which of the following amino alcohol(s) will yield compound P? Includes diagram
Chemistry · Natural Products Chemistry · Multiple correct
Q36.The CORRECT statement(s) about carbene is(are)
Chemistry · Organic Reaction Mechanism and Synthetic Applications · Multiple correct
Q37.The compound(s) that shows(show) positive haloform test is(are)
Chemistry · Qualitative Organic Analysis · Multiple correct
Q38.Tetrapeptide(s) that gives(give) the following product on reaction with Sanger's reagent followed by hydrolysis is(are) Includes diagram
Chemistry · Natural Products Chemistry · Multiple correct
Q39.Which of the following set(s) of quantum numbers is(are) NOT allowed?
Chemistry · Atomic and Molecular Structure · Multiple correct
Q40.The CORRECT expression(s) for isothermal expansion of 1 mol of an ideal gas is(are)
Chemistry · Chemical Thermodynamics · Multiple correct
Q41.The number of possible isomers for [Pt(py)(NH₃)BrCl] is . (py is pyridine)
Chemistry · Transition Metals · Numerical
Q42.The volume of 0.3 M ferrous ammonium sulphate solution required for the completion of redox titration with 20 mL of 0.1 M potassium dichromate solution is mL.
Chemistry · Analytical Chemistry · Numerical
Q43.Among the following hydrocarbon(s), how many of them would give rise to three groups of proton NMR peaks with 2:2:3 integration ratio? Includes diagram
Chemistry · Qualitative Organic Analysis · Numerical
Q44.The number of stereoisomers possible for the following compound is $Ph - CH - CH - Ph$ $OH OH$ $
Chemistry · Basic Concepts and Stereochemistry · Numerical
Q45.The number of hydrogen bond(s) present in a guanine-cytosine base pair is
Chemistry · Natural Products Chemistry · Numerical
Q46.The time for 50% completion of a zero order reaction is 30 min. Time for 80% completion of this reaction is
Chemistry · Chemical Kinetics · Numerical
Q47.Consider the reaction $C O (g) + \frac{1}{2} O_{2} (g) ⟶ C O_{2} (g)$ . The value of $Δ U$ for the reaction at 300 K is -281.8 kJ mol $^{- 1}$ . The value of $Δ H$ at same temperature is kJ mol $^{- 1}$ (rounded up to the…
Chemistry · Chemical Thermodynamics · Numerical
Q48.The nuclear spin quantum number (I) of a nucleus is $\frac{3}{2}$ . When placed in an external magnetic field, the number of possible spin energy states it can occupy is
Chemistry · Atomic and Molecular Structure · Numerical
Q49.The value of $C_{v}$ for 1 mol of N $_{2}$ gas predicted from the principle of equipartition of energy, ignoring vibrational contribution, is J K $^{- 1}$ mol $^{- 1}$ (rounded up to two decimal places). $[R = 8.3 JK^{- 1} mol^{- 1}]$ …
Chemistry · Gaseous State · Numerical
Q50.Assuming ideal gas behavior, the density of O $_{2}$ gas at 300 K and 1.0 atm is g L $^{- 1}$ (rounded up to two decimal places). $[R = 0.082 L atm mol^{- 1} K^{- 1}, molar mass of O_{2} = 32]$
Chemistry · Gaseous State · Numerical
Q51.How many of the following interhalogen species have 2 lone pairs of electrons on the central atom? $ClF_{3}, ClF_{2}^{-}, ClF_{5} and ICl_{2}^{+}$
Chemistry · Main Group Elements · Numerical
Q52. $^{24} Na$ decays to one-fourth of its initial amount in 29.8 hours. Its decay constant is hour $^{- 1}$ (rounded up to four decimal places).
Chemistry · Analytical Chemistry · Numerical
Q53.The magnitude of crystal field stabilization energy (CFSE) of octahedral $[Ti (H_{2} O)_{6}]^{3 +}$ complex is 7680 cm $^{- 1}$ . The wavelength at the maximum absorption ( $λ_{max}$ ) of this complex is nm…
Chemistry · Transition Metals · Numerical
Q54.Elemental analysis of an organic compound containing C, H and O gives percentage composition: C: 39.9% and H: 6.7%. If the molecular weight of the compound is 180, the number of carbon atoms present in the molecule is
Chemistry · Qualitative Organic Analysis · Numerical
Q55.The number of compounds having S-configuration among the following is Includes diagram
Chemistry · Basic Concepts and Stereochemistry · Numerical
Q56.The *emf* of a standard cadmium cell is 1.02 V at 300 K. The temperature coefficient of the cell is $- 5.0 \times 1 0^{- 5}$ V K $^{- 1}$ . The value of $Δ H^{\circ}$ for the cell is kJ mol $^{- 1}$ (rounded up to…
Chemistry · Electrochemistry · Numerical
Q57.For the reaction $H_{2} (g) + \frac{1}{2} O_{2} (g) ⟶ H_{2} O (l)$ , the following information is given T = 300 K $Δ \overset{ˉ}{H}^{\circ} = - 285$ kJ mol $^{- 1} \overset{ˉ}{S}_{H_{2} O}^{\circ} (l) = 70$ J K $^{- 1}$ mol $^{- 1} \overset{ˉ}{S}_{O_{2}}^{\circ} (g) = 204$ …
Chemistry · Chemical Thermodynamics · Numerical
Q58.For H $_{2}$ molecule, the fundamental vibrational frequency ( $\overset{υ}{ˉ}_{e}$ ) can be taken as 4400 cm $^{- 1}$ . The zero-point energy of the molecule is kJ mol $^{- 1}$ (rounded up to two decimal places). [h =…
Chemistry · Spectroscopy · Numerical
Q59.The solubility of PbI $_{2}$ in 0.10 M KI(aq) is $\times$ 10 $^{- 7}$ M (rounded up to two decimal places). [The solubility product, $K_{s p} = 7.1 \times 1 0^{- 9}$ ]
Chemistry · Chemical and Phase Equilibria · Numerical
Q60.The electron of a hydrogen atom is in its $n^{t h}$ Bohr orbit having de Broglie wavelength of 13.4 Å. The value of $n$ is (rounded up to the nearest integer). [Radius of $n^{t h}$ Bohr orbit = 0.53 $n^{2}$ Å, $π$ …
Chemistry · Atomic and Molecular Structure · Numerical