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Chemistry · 2020 · 3 Sep · Shift 2

21 questions from this JEE Main paper
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Chemistry · 2020 · 3 Sep · Shift 2

21 questions from this JEE Main paper

Coordination Compounds2 questionsAlcohols Phenols and Ethers1 questionsChemical Kinetics and Nuclear Chemistry1 questionsAldehydes Ketones and Carboxylic Acids3 questionsD and F Block Elements1 questionsHaloalkanes and Haloarenes2 questionsIonic Equilibrium1 questionsCompounds Containing Nitrogen1 questionsPeriodic Table and Periodicity2 questionsStructure of Atom1 questionsSome Basic Concepts of Chemistry3 questionsBiomolecules1 questionsSolutions1 questionsElectrochemistry1 questions
  1. Q1.The d-electron configuration of [Ru(en)3​]Cl2​ and [Fe(H2​O)6​]Cl2​ , respectively are :
    Chemistry · Coordination Compounds · MCQ
  2. Q2.Consider the following reaction : The product 'P' gives positive ceric ammonium nitrate test. This is because of the presence of which of these –OH group(s)? Includes diagram
    Chemistry · Alcohols Phenols and Ethers · MCQ
  3. Q3.For the reaction 2A + 3B + 23​ C → 3P, which statement is correct ?
    Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
  4. Q4.Complex A has a composition of H12​O6​Cl3​Cr. If the complex on treatment with conc.H2​SO4​ loses 13.5% of its original mass, the correct molecular formula of A is : [Given: atomic mass of Cr = 52 amu and Cl = 35 amu]
    Chemistry · Coordination Compounds · MCQ
  5. Q5.Consider the following molecules and statements related to them : (a) (B) is more likely to be crystalline than (A) (b) (B) has higher boiling point than (A) (c) (B) dissolves more readily than (A) in water Identify the correct option from… Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  6. Q6.The compound A in the following reaction is : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  7. Q7.The incorrect statement is :
    Chemistry · D and F Block Elements · MCQ
  8. Q8.The increasing order of the reactivity of the following compound in nucleophilic addition reaction is : Propanal, Benzaldehyde, Propanone, Butanone
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  9. Q9.The decreasing order of reactivity of the following compounds towards nucleophilic substitution (SN2) is : Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  10. Q10.The major product in the following reaction is : Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  11. Q11.100 mL of 0.1 M HCl is taken in a beaker and to it 100 mL of 0.1 M NaOH is added in steps of 2 mL and the pH is continuously measured. Which of the following graphs correctly depicts the change in pH?
    Chemistry · Ionic Equilibrium · MCQ
  12. Q12.Three isomers A, B and C (mol. formula C8​H11​N) give the following results : R has lower boiling point than S A, B and C, respectively are : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  13. Q13.The five successive ionization enthalpies of an element are 800, 2427, 3658, 25024 and 32824 kJ mol–1. The number of valence electrons in the element is :
    Chemistry · Periodic Table and Periodicity · MCQ
  14. Q14.Consider the hypothetical situation where the azimuthal quantum number, l, takes values 0, 1, 2, ....., n + 1, where n is the principal quantum number. Then, the element with atomic number :
    Chemistry · Structure of Atom · MCQ
  15. Q15.Among the statements (I – IV), the correct ones are: (I) Be has smaller atomic radius compared to Mg. (II) Be has higher ionization enthalpy than Al. (III) Charge/radius ratio of Be is greater than that of Al. (IV) Both Be and Al form…
    Chemistry · Periodic Table and Periodicity · MCQ
  16. Q16.The strengths of 5.6 volume hydrogen peroxide (of density 1 g/mL) in terms of mass percentage and molarity (M), respectively, are: (Take molar mass of hydrogen peroxide as 34 g/mol)
    Chemistry · Some Basic Concepts of Chemistry · MCQ
  17. Q17.The number of groups present in a tripeptide Asp–Glu–Lys is ​. Includes diagram
    Chemistry · Biomolecules · Numerical
  18. Q18.6.023 × 1022 molecules are present in 10 g of a substance 'x'. The molarity of a solution containing 5 g of substance 'x' in 2 L solution is ​ × 10-3
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  19. Q19.If 250 cm3 of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution containing 1.65 g of a protein B, at 298 K, the ratio of the molecular masses of A and B is…
    Chemistry · Solutions · Numerical
  20. Q20.The volume (in mL) of 0.1 N NaOH required to neutralise 10 mL of 0.1 N phosphinic acid is ​.
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  21. Q21.An acidic solution of dichromate is electrolyzed for 8 minutes using 2A current. As per the following equation Cr2​O72−​ + 14H+ + 6e– → 2Cr3+ + 7H2​O The amount of Cr3+ obtained was 0.104 g. The efficiency of the…
    Chemistry · Electrochemistry · Numerical