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Chemistry · 2020 · 9 Jan · Shift 2

20 questions from this JEE Main paper
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Chemistry · 2020 · 9 Jan · Shift 2

20 questions from this JEE Main paper

Aldehydes Ketones and Carboxylic Acids2 questionsHaloalkanes and Haloarenes1 questionsPeriodic Table and Periodicity1 questionsPractical Organic Chemistry1 questionsSome Basic Concepts of Chemistry1 questionsD and F Block Elements2 questionsChemical Kinetics and Nuclear Chemistry1 questionsSolutions1 questionsThermodynamics1 questionsChemical Bonding and Molecular Structure1 questionsCoordination Compounds2 questionsP Block Elements1 questionsCompounds Containing Nitrogen2 questionsIonic Equilibrium1 questionsChemical Equilibrium1 questionsBasics of Organic Chemistry1 questions
  1. Q1.In the following reaction A is : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  2. Q2.Which of the following reactions will not produce a racemic product?
    Chemistry · Haloalkanes and Haloarenes · MCQ
  3. Q3.The first and second ionisation enthalpies of a metal are 496 and 4560 kJ mol–1, respectively. How many moles of HCl and H2​SO4​, respectively, will be needed to react completely with 1 mole of the metal hydroxide ?
    Chemistry · Periodic Table and Periodicity · MCQ
  4. Q4.A, B and C are three biomolecules. The results of the tests performed on them are given below:  A  B  C ​ Molisch’s  Test ​ Positive  Positive  Negative ​ Barfoed  Test ​ Negative  Positive  Negative ​ Biuret  Test ​ Negative  Negative  Positive ​​…
    Chemistry · Practical Organic Chemistry · MCQ
  5. Q5.Consider the following reactions The mass percentage of carbon in A is ​. Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · Numerical
  6. Q6.10.30 mg of O2​ is dissolved into a liter of sea water of density 1.03 g/mL. The concentration of O2​ in ppm is ​.
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  7. Q7.The sum of the total number of bonds between chromium and oxygen atoms in chromate and dichromate ions is ​.
    Chemistry · D and F Block Elements · Numerical
  8. Q8.A sample of milk splits after 60 min. at 300 K and after 40 min. at 400 K when the population of lactobacillus acidophilus in it doubles. The activa tion energy (in kJ/ mol) for this process is closest to ​.…
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  9. Q9.A cylinder containing an ideal gas (0.1 mol of 1.0 dm3) is in thermal equilibrium with a large volume of 0.5 molal aqueous solution of ethylene glycol at its freezing point. If the stoppers S1​ and S2​ (as shown in the figure) are… Includes diagram
    Chemistry · Solutions · Numerical
  10. Q10.The true statement amongst the following is :
    Chemistry · Thermodynamics · MCQ
  11. Q11.The number of sp2 hybrid orbitals in a molecule of benzene is :
    Chemistry · Chemical Bonding and Molecular Structure · MCQ
  12. Q12.The isomer(s) of [Co(NH3​)4​Cl2​] that has/have a Cl–Co–Cl angle of 90°, is/are :
    Chemistry · Coordination Compounds · MCQ
  13. Q13.The reaction of H3​N3​B3​Cl3​ (A) with LiBH4​ in tetrahydrofuran gives inorganic benzene (B). Further, the reaction of (A) with (C) leads to H3​N3​B3​(Me)3​. Compounds (B) and (C) respectively, are :
    Chemistry · P Block Elements · MCQ
  14. Q14.Consider the following reactions, The compound [P] is : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  15. Q15.5 g of zinc is treated separately with an excess of (a) dilute hydrochloric acid and (b) aqueous sodium hydroxide. The ratio of the volumes of H2​ evolved in these two reactions is :
    Chemistry · D and F Block Elements · MCQ
  16. Q16.The solubility product of Cr(OH)3​ at 298 K is 6.0 × 10–31. The concentration of hydroxide ions in a saturated solution of Cr(OH)3​ will be :
    Chemistry · Ionic Equilibrium · MCQ
  17. Q17.The decreasing order of basicity of the following amines is : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  18. Q18.In the figure shown below reactant A (represented by square) is in equilibrium with product B (represented by circle). The equilibrium constant is : Includes diagram
    Chemistry · Chemical Equilibrium · MCQ
  19. Q19.Which of the following has the shortest C−Cl bond?
    Chemistry · Basics of Organic Chemistry · MCQ
  20. Q20.The correct order of the spin-only magnetic moments of the following complexes is : (I) [Cr(H2​O)6​]Br2​ (II) Na4​[Fe(CN)6​] (III) Na3​[Fe(C2​O4​)3​] (Δ 0 > P) (IV) (Et4​N)2​[CoCl4​]
    Chemistry · Coordination Compounds · MCQ