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Chemistry · 2021 · 20 Jul · Shift 2

24 questions from this JEE Main paper
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Chemistry · 2021 · 20 Jul · Shift 2

24 questions from this JEE Main paper

Basics of Organic Chemistry2 questionsCompounds Containing Nitrogen2 questionsAldehydes Ketones and Carboxylic Acids2 questionsIonic Equilibrium1 questionsStructure of Atom2 questionsHydrocarbons3 questionsCoordination Compounds3 questionsBiomolecules1 questionsChemical Bonding and Molecular Structure1 questionsSalt Analysis1 questionsPractical Organic Chemistry1 questionsThermodynamics1 questionsSolutions1 questionsSome Basic Concepts of Chemistry1 questionsChemical Kinetics and Nuclear Chemistry1 questionsElectrochemistry1 questions
  1. Q1.Which one of the following pairs of isomers is an example of metamerism?
    Chemistry · Basics of Organic Chemistry · MCQ
  2. Q2.In the above reactions, product A and product B respectively are : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  3. Q3.The major product (P) in the following reaction is : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  4. Q4.A solution is 0.1 M in Cl − and 0.001 M in CrO 42−​. Solid AgNO3​ is gradually added to it. Assuming that the addition does not change in volume and Ksp(AgCl) = 1.7 × 10 − 10 M2 and Ksp(Ag2​CrO4​) = 1.9 × 10 −…
    Chemistry · Ionic Equilibrium · MCQ
  5. Q5.Outermost electronic configuration of a group 13 element, E, is 4s2, 4p1. The electronic configuration of an element of p-block period-five placed diagonally to element, E is :
    Chemistry · Structure of Atom · MCQ
  6. Q6.Metallic sodium does not react normally with :
    Chemistry · Hydrocarbons · MCQ
  7. Q7.Spin only magnetic moment of an octahedral complex of Fe2+ in the presence of a strong field ligand in BM is :
    Chemistry · Coordination Compounds · MCQ
  8. Q8.Which one of the following species doesn't have a magnetic moment of 1.73 BM, (spin only value)?
    Chemistry · Coordination Compounds · MCQ
  9. Q9.Which one of the following statements is not true about enzymes?
    Chemistry · Biomolecules · MCQ
  10. Q10.The hybridisations of the atomic orbitals of nitrogen in NO 2−​, NO 2+​ and NH 4+​ respectively are.
    Chemistry · Chemical Bonding and Molecular Structure · MCQ
  11. Q11.Benzene on nitration gives nitrobenzene in presence of HNO3​ and H2​SO4​ mixture, where :
    Chemistry · Hydrocarbons · MCQ
  12. Q12.Consider the above reaction, compound B is : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  13. Q13.Major product P of above reaction, is : Includes diagram
    Chemistry · Hydrocarbons · MCQ
  14. Q14.Cu2+ salt reacts with potassium iodide to give
    Chemistry · Salt Analysis · MCQ
  15. Q15.In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of :
    Chemistry · Practical Organic Chemistry · MCQ
  16. Q16.The correct order of their reactivity towards hydrolysis at room temperature is : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  17. Q17.For a given chemical reaction A → B at 300 K the free energy change is − 49.4 kJ mol − 1 and the enthalpy of reaction is 51.4 kJ mol − 1. The entropy change of the reaction is ​ JK − 1 mol − 1.
    Chemistry · Thermodynamics · Numerical
  18. Q18.The wavelength of electrons accelerated from rest through a potential difference of 40 kV is x × 10 − 12 m. The value of x is ​. (Nearest integer) Give : Mass of electron = 9.1 × 10 − 31 kg Charge…
    Chemistry · Structure of Atom · Numerical
  19. Q19.The vapour pressures of A and B at 25 ∘ C are 90 mm Hg and 15 mm Hg respectively. If A and B are mixed such that the mole fraction of A in the mixture is 0.6, then the mole fraction of B in the vapour phase is x × 10 − 1.…
    Chemistry · Solutions · Numerical
  20. Q20.4g equimolar mixture of NaOH and Na2​CO3​ contains x g of NaOH and y g of Na2​CO3​. The value of x is ​ g. (Nearest integer)
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  21. Q21.When 0.15 g of an organic compound was analyzed using Carius method for estimation of bromine, 0.2397 g of AgBr was obtained. The percentage of bromine in the organic compound is ​. (Nearest integer) [Atomic mass :…
    Chemistry · Basics of Organic Chemistry · Numerical
  22. Q22.PCl5​(g)→PCl3​(g)+Cl2​(g) In the above first order reaction the concentration of PCl5​ reduces from initial concentration 50 mol L − 1 to 10 mol L − 1 in 120 minutes at 300 K. The rate constant for the reaction at 300 K…
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  23. Q23.An aqueous solution of NiCl2​ was heated with excess sodium cyanide in presence of strong oxidizing agent to form [Ni(CN)6​]2−. The total change in number of unpaired electrons on metal centre is ​.
    Chemistry · Coordination Compounds · Numerical
  24. Q24.Potassium chlorate is prepared by electrolysis of KCl in basic solution as shown by following equation. 6OH− + Cl−→ ClO3−​ + 3H2​O + 6e− A current of xA has to be passed for 10h to produce 10.0g of potassium chlorate. The…
    Chemistry · Electrochemistry · Numerical