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Chemistry · 2021 · 26 Aug · Shift 1

22 questions from this JEE Main paper
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Chemistry · 2021 · 26 Aug · Shift 1

22 questions from this JEE Main paper

Practical Organic Chemistry1 questionsD and F Block Elements2 questionsAldehydes Ketones and Carboxylic Acids2 questionsCompounds Containing Nitrogen1 questionsHaloalkanes and Haloarenes3 questionsElectrochemistry2 questionsAlcohols Phenols and Ethers1 questionsIonic Equilibrium1 questionsStructure of Atom1 questionsChemical Bonding and Molecular Structure1 questionsSolutions1 questionsChemical Equilibrium1 questionsCoordination Compounds1 questionsChemical Kinetics and Nuclear Chemistry1 questionsThermodynamics1 questionsBiomolecules1 questionsSome Basic Concepts of Chemistry1 questions
  1. Q1.Which one of the following complexes is violet in colour?
    Chemistry · Practical Organic Chemistry · MCQ
  2. Q2.Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere?
    Chemistry · D and F Block Elements · MCQ
  3. Q3.The major products formed in the following reaction sequence A and B are : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  4. Q4.The major product formed in the following reaction is : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  5. Q5.The major product formed in the following reaction is : Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  6. Q6.Given below are two statements : Statement I : The limiting molar conductivity of KCl (strong electrolyte) is higher compared to that of CH3​COOH (weak electrolyte). Statement II : Molar conductivity decreases with decrease in…
    Chemistry · Electrochemistry · MCQ
  7. Q7.The correct options for the products A and B of the following reactions are : Includes diagram
    Chemistry · Alcohols Phenols and Ethers · MCQ
  8. Q8.Given below are two statements. Statement I : In the titration between strong acid and weak base methyl orange is suitable as an indicator. Statement II : For titration of acetic acid with NaOH phenolphthalein is not a suitable indicator.…
    Chemistry · Ionic Equilibrium · MCQ
  9. Q9.Among the following compounds I-IV, which one forms a yellow precipitate on reacting sequentially with (i) NaOH (ii) dil. HNO3​ (iii) AgNO3​? Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  10. Q10.Given below are two statements. Statement I : According to Bohr's model of an atom, qualitatively the magnitude of velocity of electron increases with decrease in positive charges on the nucleus as there is no strong hold on the electron…
    Chemistry · Structure of Atom · MCQ
  11. Q11.The correct sequential addition of reagents in the preparation of 3-nitrobenzoic acid from benzene is :
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  12. Q12.Excess of isobutane on reaction with Br2​ in presence of light at 125 ∘ C gives which one of the following, as the major product?
    Chemistry · Haloalkanes and Haloarenes · MCQ
  13. Q13.AB3​ is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is ​. (Integer answer)
    Chemistry · Chemical Bonding and Molecular Structure · Numerical
  14. Q14.These are physical properties of an element (A) Sublimation enthalpy (B) Ionisation enthalpy (C) Hydration enthalpy (D) Electron gain enthalpy The total number of above properties that affect the reduction potential is ​…
    Chemistry · Electrochemistry · Numerical
  15. Q15.Of the following four aqueous solutions, total number of those solutions whose freezing point is lower than that of 0.10 M C2​H5​OH is ​ (Integer answer) (i) 0.10 M Ba3​(PO4​)2​ (ii) 0.10 M Na2​SO4​ (iii)…
    Chemistry · Solutions · Numerical
  16. Q16.The OH − concentration in a mixture of 5.0 mL of 0.0504 M NH4​Cl and 2 mL of 0.0210 M NH3​ solution is x × 10 − 6 M. The value of x is ​. (Nearest integer) [Given Kw = 1 × 10 − 14 and Kb =…
    Chemistry · Chemical Equilibrium · Numerical
  17. Q17.The number of 4f electrons in the ground statement electronic configuration of Gd2+ is ​. [Atomic number of Gd = 64]
    Chemistry · D and F Block Elements · Numerical
  18. Q18.The ratio of number of water molecules in Mohr's salt and potash alum is ​× 10 − 1. (Integer answer)
    Chemistry · Coordination Compounds · Numerical
  19. Q19.The following data was obtained for chemical reaction given below at 975 K. 2NO(g) + 2H2​(g) → N2​(g) + 2H2​O(g) The order of the reaction with respect to NO is ​. [Integer answer] Includes diagram
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  20. Q20.The Born-Haber cycle for KCl is evaluated with the following data : Δf​HΘ for KCl =− 436.7 kJ mol − 1 ; Δsub​HΘ for K = 89.2 kJ mol − 1 ; Δionization​HΘ for K = 419.0…
    Chemistry · Thermodynamics · Numerical
  21. Q21.The total number of negative charge in the tetrapeptide, Gly-Glu-Asp-Tyr, at pH 12.5 will be ​. (Integer answer)
    Chemistry · Biomolecules · Numerical
  22. Q22.An aqueous KCl solution of density 1.20 g mL − 1 has a molality of 3.30 mol kg − 1. The molarity of the solution in mol L − 1 is ​ (Nearest integer) [Molar mass of KCl = 74.5]
    Chemistry · Some Basic Concepts of Chemistry · Numerical