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Question for IIT JAM Chemistry - Quiz / Questions / MCQ in English

Last Update on : October 12, 2026

Duration: 180 ยท Questions: 60 ยท Max Marks: 60

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To boost your performance in IIT JAM Chemistry exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in IIT JAM Chemistry exams.

Latest IIT JAM Chemistry Exam Question (Objective Questions), MCQ in English

Subjects : Section A, Section B, Section C

Question Bank IIT JAM Chemistry Exam - English

Section A

Q 1 :
10-6 M NaOH is diluted 100 times. The pH of the diluted base is
  1. A.between 7 and 8
  2. B.between 5 and 6
  3. C.between 6 and 7
  4. D.between 10 and 11
Q 2 :
In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is
  1. A.1.93 A         
  2. B.9.65 A
  3. C.19.3 A        
  4. D.0.965 A
Q 3 :
The one which decreases with dilution is
  1. A.molar conductance
  2. B.conductance
  3. C.specific conductance
  4. D.equivalent conductance
Q 4 :
Vapour pressure of pure ‘A’ is 70 mm of Hg at 25oC. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. if the vapour pressure of the solution is 84 mm of Hg at 25oC, the vapour pressure of pure ‘B’ at 25oC is
  1. A.28 mm   
  2. B.56 mm
  3. C.70 mm    
  4. D.140 mm
Q 5 :
A 6% solution of urea is isotonic with
  1. A.1 M solution of glucose
  2. B.0.05 M solution of glucose
  3. C.6% solution of glucose
  4. D.25% solution of glucose
Q 6 :
Which of the following is not a synthetic fibre:
  1. A.Anygora
  2. B.Rayon
  3. C.Nylon
  4. D.Polyster
Q 7 :
Which one of the following is not contained in Portland cement ?
  1. A.Ca3Al2O6
  2. B.Ca3SiO5
  3. C.Ca2Si­O4
  4. D.Ca3(PO4)2
Q 8 :
What is the reson for white cement to be white ?
  1. A.It does not contain carbon
  2. B.It does not contain silicon
  3. C.It does not contain iron
  4. D.It does not contain calcium
Q 9 :
Which fertilizer is assimilated directly by the plant ?
  1. A.Super phosphate
  2. B.Nitrolim
  3. C.Muriate of Potash
  4. D.Humus
Q 10 :
Which of the following chemicals is used in foam fire extinguishers ?
  1. A.Aluminium sulphate
  2. B.Copper sulphate
  3. C.Cobalt sulphate
  4. D.Nickel sulphate 
Q 11 :
The appropriate regent required for carrying out the following transformation are
  1. A.(i) succinic anhydride, AlCl3; Zn/Hg, HCl; (iii) polyphosphoric acid
  2. B.Maleic anhydride, AlCl3; (ii) H2N - NH2, KOH; (iii) H2SO4
  3. C.(i) succinic anhydride, FeCl3; (ii) LiAlH4; (iii) H2SO4
  4. D.(i) phthalic anhydride, F3Bรขห†โ„ขOEt2; (ii) HS(CH2)2SH, H+; (iii) Raney Ni; (iv) polyphosphoric acid
Q 12 :
TRUE statement(s) about Langmuir isotherm is(are) ?
  1. A.valid for monolayer coverage
  2. B.all adsorption sites are equivalent
  3. C.there is dynamic equilibrium between free gas and adsorbed gas
  4. D.adsorption probability is independent of occupancy at the neighbouring sites
Q 13 :
On hydrolysis, aluminium carbide produces ?
  1. A.CH4
  2. B.C2H6
  3. C.C2H4
  4. D.C2H2
Q 14 :
Carbonic anhydrase is an example of
  1. A.Hydrolysis enzyme
  2. B.Redox enzyme
  3. C.O2 transport protein
  4. D.Heme protein
Q 15 :
The CORRECT order of melting points of group 15 trifluorides is ?
  1. A.PF3 < AsF3 < SbF3 < BiF3
  2. B.BiF3 < SbF3 < PF3 < AsF3
  3. C.PF3 < SbF3 < AsF3 < BiF3
  4. D.BiF3 < AsF3 < SbF3 < PF3
Q 16 :
NaF, KF MgO and CaO are crystalline solids. They have NaCl structure. Their lattice energies vary in the order
  1. A.NaF < KF < MgO < CaO
  2. B.KF < NaF < CaO < MgO
  3. C.MgO < CaO < NaF < KF
  4. D.CaO < MgO < KF < NaF
Q 17 :
The major product formed in the following reaction is ?
    Q 18 :
    The compound that the most acidic hydrogen is ?
    1. A.H2C = CH2
    2. B.HC = CH
    3. C.H2C = C = CH2
    4. D.H3C = CH3
    Q 19 :
    The C - 2 epimer of D - glucose is ?
    1. A.D - Mannose
    2. B.D - Fructose
    3. C.D - Galactose
    4. D.D - Glucose
    Q 20 :
    The value of integral
    1. A.Zero
    2. B.1/2
    3. C.1
    4. D.2
    Q 21 :
    The number of crystal systems and the number of Bravais lattices are, respectively,
    1. A.14 and 7
    2. B.7 and 32
    3. C.32 and 14
    4. D.7 and 14
    Q 22 :
    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)
      Q 23 :
      With respect to periodic properties, the CORRECT statement is
      1. A.Electron affinity order is F > O > Cl
      2. B.First ionisation energy order Al > Mg > K
      3. C.Atomic radius order is N > P > As
      4. D.Ionic radius order is K + Ca2+ > Mg2+
      Q 24 :
      Which plot represents a spectrophotometric titration, where the titrant alone absorbs light in the visible region ?
        Q 25 :
        Among the following metal carbonyl species, the one with the highest metal-carbon back bonding is ?
        1. A.[Ti(CO)6]2-
        2. B.[V(CO)6]-
        3. C.Cr(CO)6
        4. D.[Mn(CO)6]+
        Q 26 :
        The CORRECT order of รขห†โ€ 0 (the octahedral crystal field splitting of d orbitals) values for the following anionic metal complexes is
        1. A.[Ir(CN)6]3- < [Rh(CN)6]3- < [RhI6]3- < [COI6]3-
        2. B.[COI6]3- < [RhI6]3- < [Rh(CN)6]3- < [Ir(CN)6]3-
        3. C.[COI6]3- < [Rh(CN)6]3- < [RhI6]3- < [Ir(CN)6]3-
        4. D.[Ir(CN)6]3- <[COI6]3- < [Rh(CN)6]3- < [RhI6]3-
        Q 27 :
        The decay modes of 14C and 14O are ?
        1. A.β decay
        2. B.positron emission
        3. C.β decay and positron emission, respectively
        4. D.positron emission and β decay, respectively
        Q 28 :
        Consider the following four xenon compounds: XeF2, XeF4, XeF6 and XeO3.
        The pair of xenon compounds expected to have non-zero dipole moment is
        1. A.XeF4 and XeF6
        2. B.XeF2 and XeF4
        3. C.XeF2 and XeO3
        4. D.XeF6 and XeO3
        Q 29 :
        The CORRECT order of stability for the following carbocations is ?
        1. A.I < III < IV < II
        2. B.III < II < IV < I
        3. C.II < IV < III < I
        4. D.IV < III < I < II
        Q 30 :
        Among the dimethyl cyclohexanes, which one can be obtained in enantiopure form ?

          Section B

          Q 31 :
          The correct statement(s) about the following species is(are) ?
          1. A.I and II are resonance structures
          2. B.I and III are resonance structures
          3. C.II and III are diastereomers
          4. D.III is a tautomer of I
          Q 32 :
          Consider the following reaction :

          Among the following, the compound(s) whose osazone derivative(s) will have the same melting point as that of X is(are)
            Q 33 :
            The appropriate regents required for carrying out the following transformation are
            1. A.(i) PCC, CH2Cl2; (ii) PH3P = CHCO2Et; (iii) aq. NaOH, heat, then acidify
            2. B.(i) Cro3, H2SO4, aq. Acetone (ii) Ac2O, NaOAc
            3. C.(i) MnO2; (ii) CH2(CO2H)2, piperidine, pyridine
            4. D.(i) PCC, CH2Cl2; (ii) BrCH2CO2C(CH3)3, Zn (iii) H3O+, heat
            Q 34 :
            The protein(s) that belong to the class of the blue copper proteins is (are) ?
            1. A.ceruloplasmin
            2. B.superoxide dismutase
            3. C.hemocyanin
            4. D.azurin
            Q 35 :
            The ion(s) that exhibit only charge transfer bands in the absorption spectra (UV - visible region) is(are)
            1. A.[Cr(C2O4)3]3-
            2. B.[CrO4]2-
            3. C.[ReO4]-
            4. D.[NiO2]2-
            Q 36 :
            The type(s) of interaction(s) that hold layers of graphite together is(are) ?
            1. A. stacking
            2. B.van der Waals
            3. C.hydrogen bonding
            4. D.Coulombic
            Q 37 :
            The 3pz orbital has ?
            1. A.one radial node
            2. B.two radial nodes
            3. C.one angular node
            4. D.two angular nodes
            Q 38 :
            The diatomic molecules(s) that has(have) two π-type bonds is(are)
            1. A.B2
            2. B.C2
            3. C.N2
            4. D.O2
            Q 39 :
            The “heme” containing protein (s)is/are ?
            1. A.cytochrome C
            2. B.hemocyanin
            3. C.hemerythrin
            4. D.myoglobin
            Q 40 :
            Among the following, the species having see - saw shape is/are ?
            1. A.SF4
            2. B.XeF4

            Section C

            Q 41 :
            Among the following, the number of molecules that are aromatic is ____.
              Q 42 :
              The number of all possible isomers for the molecular formula C6H14 is___.
                Q 43 :
                Hydrolysis of 15.45 g of benzonitrile produced 10.98 g of benzoic acid. The percentage yield of acid formed is___.
                  Q 44 :
                  A cetic acid content in commercial vinegar was analyzed by titrating against 1.5 M NaOH solution. A 20 mL vinegar sample required 18 mL of titrant to give endpoint. The concentration of acetic acid in the vinegar (in mol L-1) is___.
                    Q 45 :
                    The bond order of Be2 molecule is ____.
                      Q 46 :
                      The number of P – H bonds in hypophosphorus acid is ___.
                        Q 47 :
                        The isotope undergoes one alpha and one beta particle emission sequentially to form an isotope “X”. The number of neutrons in “X” is___.
                          Q 48 :
                          In a diffraction experiment with X - rays of wavelength 1.54 Å, a diffraction line corresponding to 2θ = 20.8º is observed. The inter - planar separation in Å is ____.
                            Q 49 :
                            The potential energy of interaction between two ions in an ionic compound is given by kJ mol-1. Assuming that CaCl2 is linear molecule of length 5.6 Å, the potential energy for CaCl2 molecule in kJ mol-1 is ___.
                              Q 50 :
                              The enthalpy of formation for CH4(g), C(g) and H(g) are -75, 717 and 218 kJ mol-1, respectively. The enthalpy of C – H bond in kJ mol-1 is ____.

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