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Chemistry · 2020 · 9 Jan · Shift 1

22 questions from this JEE Main paper
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Chemistry · 2020 · 9 Jan · Shift 1

22 questions from this JEE Main paper

Aldehydes Ketones and Carboxylic Acids1 questionsThermodynamics1 questionsChemical Bonding and Molecular Structure1 questionsCoordination Compounds2 questionsIonic Equilibrium1 questionsHydrocarbons2 questionsChemical Kinetics and Nuclear Chemistry1 questionsBasics of Organic Chemistry1 questionsPeriodic Table and Periodicity3 questionsSolutions1 questionsCompounds Containing Nitrogen2 questionsElectrochemistry1 questionsSome Basic Concepts of Chemistry2 questionsStructure of Atom1 questionsRedox Reactions1 questionsHaloalkanes and Haloarenes1 questions
  1. Q1.Identify (A) in the following reaction sequence : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  2. Q2.If enthalpy of atomisation for Br2​(1) is x kJ/mol and bond enthalpy for Br2​ is y kJ/mol, the relation between them :
    Chemistry · Thermodynamics · MCQ
  3. Q3.If the magnetic moment of a dioxygen species is 1.73 B.M, it may be :
    Chemistry · Chemical Bonding and Molecular Structure · MCQ
  4. Q4.[Pd(F)(Cl)(Br)(I)]2– has n number of geometrical isomers. Then, the spin-only magnetic moment and crystal field stabilisation energy [CFSE] of [Fe(CN)6​]n–6, respectively, are: [Note : Ignore the pairing energy]
    Chemistry · Coordination Compounds · MCQ
  5. Q5.The Ksp for the following dissociation is 1.6 × 10–5 PbCl2(s)​⇋Pb(aq)2+​+2Cl(aq)−​ Which of the following choices is correct for a mixture of 300 mL 0.134 M Pb(NO3​)2​ and 100 mL 0.4 M NaCl ?
    Chemistry · Ionic Equilibrium · MCQ
  6. Q6.The correct order of heat of combustion for following alkadienes is : Includes diagram
    Chemistry · Hydrocarbons · MCQ
  7. Q7.For the following reactions A700K​ProductolimitsAcatalyst⟶500K​Productolimits it was found that Ea is decreased by 30 kJ/mol in the…
    Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
  8. Q8.The increasing order of basicity for the following intermediates is (from weak to strong) Includes diagram
    Chemistry · Basics of Organic Chemistry · MCQ
  9. Q9.The electronic configurations of bivalent europium and trivalent cerium are (atomic number : Xe = 54, Ce = 58, Eu = 63)
    Chemistry · Periodic Table and Periodicity · MCQ
  10. Q10.How much amount of NaCl should be added to 600 g of water (ρ = 1.00 g/mL) to decrease the freezing point of water to – 0.2 °C ? ​. (The freezing point depression constant for water = 2K kg mol–1)
    Chemistry · Solutions · Numerical
  11. Q11.The mass percentage of nitrogen in histamine is ​.
    Chemistry · Compounds Containing Nitrogen · Numerical
  12. Q12.108 g of silver (molar mass 108 g mol–1) is deposited at cathode from AgNO3​(aq) solution by a certain quantity of electricity. The volume (in L) of oxygen gas produced at 273 K and 1 bar pressure from water by the same quantity of…
    Chemistry · Electrochemistry · Numerical
  13. Q13.The molarity of HNO3​ in a sample which has density 1.4 g/mL and mass percentage of 63% is ​. (Molecular Weight of HNO3​ = 63)
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  14. Q14.The hardness of a water sample containing 10–3 M MgSO4​ expressed as CaCO3​ equivalents (in ppm) is ​. (molar mass of MgSO4​ is 120.37 g/mol)
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  15. Q15.The de Broglie wavelength of an electron in the 4th Bohr orbit is :
    Chemistry · Structure of Atom · MCQ
  16. Q16.The major product (Y) in the following reactions is : Includes diagram
    Chemistry · Hydrocarbons · MCQ
  17. Q17.Complex X of composition Cr(H2​O)6​Cln has a spin only magnetic moment of 3.83 BM. It reacts with AgNO3​ and shows geometrical isomerism. The IUPAC nomenclature of X is :
    Chemistry · Coordination Compounds · MCQ
  18. Q18.The compound that cannot act both as oxidising and reducing agent is :
    Chemistry · Redox Reactions · MCQ
  19. Q19.Which of these will produce the highest yield in Friedel Crafts reaction?
    Chemistry · Haloalkanes and Haloarenes · MCQ
  20. Q20.The major product Z obtained in the following reaction scheme is : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  21. Q21.The acidic, basic and amphoteric oxides, respectively, are :
    Chemistry · Periodic Table and Periodicity · MCQ
  22. Q22.B has a smaller first ionization enthalpy than Be. Consider the following statements : (I) It is easier to remove 2p electron than 2s electron (II) 2p electron of B is more shielded from the nucleus by the inner core of electrons than the…
    Chemistry · Periodic Table and Periodicity · MCQ