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Chemistry · 2020 · 6 Sep · Shift 2

17 questions from this JEE Main paper
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Chemistry · 2020 · 6 Sep · Shift 2

17 questions from this JEE Main paper

Aldehydes Ketones and Carboxylic Acids1 questionsSome Basic Concepts of Chemistry1 questionsD and F Block Elements1 questionsCompounds Containing Nitrogen1 questionsThermodynamics1 questionsBasics of Organic Chemistry1 questionsChemical Kinetics and Nuclear Chemistry1 questionsPeriodic Table and Periodicity1 questionsIonic Equilibrium1 questionsAlcohols Phenols and Ethers1 questionsCoordination Compounds1 questionsHaloalkanes and Haloarenes1 questionsSalt Analysis1 questionsChemical Equilibrium1 questionsSolutions1 questionsElectrochemistry1 questionsBiomolecules1 questions
  1. Q1.The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is : Includes table
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  2. Q2.The average molar mass of chlorine is 35.5 g mol–1. The ratio of 35Cl to 37Cl in naturally occuring chlorine is close to :
    Chemistry · Some Basic Concepts of Chemistry · MCQ
  3. Q3.Mischmetal is an alloy consisting mainly of :
    Chemistry · D and F Block Elements · MCQ
  4. Q4.Which of the following compounds can be prepared in good yield by Gabriel phthalimide synthesis?
    Chemistry · Compounds Containing Nitrogen · MCQ
  5. Q5.For a reaction, 4M(s) + nO2​(g) → 2M2​On​(s) the free energy change is plotted as a function of temperature. The temperature below which the oxide is stable could be inferred from the plot as the point at which :
    Chemistry · Thermodynamics · MCQ
  6. Q6.The IUPAC name of the following compound is : Includes diagram
    Chemistry · Basics of Organic Chemistry · MCQ
  7. Q7.The rate of a reaction decreased by 3.555 times when the temperature was changed from 40oC to 30oC. The activation energy (in kJ mol–1) of the reaction is ​. Take; R = 8.314 J mol–1 K–1 ln 3.555 = 1.268
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  8. Q8.The atomic number of Unnilunium is ​.
    Chemistry · Periodic Table and Periodicity · Numerical
  9. Q9.If the solubility product of AB2​ is 3.20 × 10–11 M3, then the solubility of AB2​ in pure water is ​× 10–4 mol L–1. [Assuming that neither kind of ion reacts with water]
    Chemistry · Ionic Equilibrium · Numerical
  10. Q10.A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass percentage of carbon in P is ​. (to the nearest integer) (Atomic mass : C = 12; H = 1; O = 16)
    Chemistry · Alcohols Phenols and Ethers · Numerical
  11. Q11.For a d4 metal ion in an octahedral field, the correct electronic configuration is :
    Chemistry · Coordination Compounds · MCQ
  12. Q12.The increasing order of the boiling points of the major products A, B and C of the following reactions will be : Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  13. Q13.Match the following : Includes table
    Chemistry · Salt Analysis · MCQ
  14. Q14.The value of KC is 64 at 800 K for the reaction N2​(g) + 3H2​(g) ⇌ 2NH3​(g) The value of KC for the following reaction is : NH3​(g) ⇌ 21​ N2​(g) + 23​ H2​(g)
    Chemistry · Chemical Equilibrium · MCQ
  15. Q15.A set of solutions is prepared using 180 g of water as a solvent and 10 g of different nonvolatile solutes A, B and C. The relative lowering of vapour pressure in the presence of these solutes are in the order : [Given, molar mass of A =…
    Chemistry · Solutions · MCQ
  16. Q16.For the given cell : Cu(s) | Cu2+(C1M) || Cu2+(C2M) | Cu(s) change in Gibbs energy (Δ G) is negative, if :
    Chemistry · Electrochemistry · MCQ
  17. Q17.Which one of the following statements is not true?
    Chemistry · Biomolecules · MCQ