Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Chemistry · 2021 · 31 Aug · Shift 2

21 questions from this JEE Main paper
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /JEE Main
  3. /Papers
  4. /2021 · 31 Aug · Shift 2
  5. /Chemistry

Chemistry · 2021 · 31 Aug · Shift 2

21 questions from this JEE Main paper

Basics of Organic Chemistry1 questionsD and F Block Elements3 questionsAldehydes Ketones and Carboxylic Acids2 questionsElectrochemistry1 questionsCompounds Containing Nitrogen2 questionsBiomolecules1 questionsCoordination Compounds1 questionsThermodynamics1 questionsPeriodic Table and Periodicity1 questionsHaloalkanes and Haloarenes1 questionsHydrocarbons1 questionsSolutions1 questionsIonic Equilibrium1 questionsChemical Kinetics and Nuclear Chemistry1 questionsSome Basic Concepts of Chemistry1 questionsChemical Bonding and Molecular Structure1 questionsPractical Organic Chemistry1 questions
  1. Q1.Arrange the following conformational isomers of n-butane in order of their increasing potential energy : Includes diagram
    Chemistry · Basics of Organic Chemistry · MCQ
  2. Q2.The Eu2+ ion is a strong reducing agent in spite of its ground state electronic configuration (outermost) : [Atomic number of Eu = 63]
    Chemistry · D and F Block Elements · MCQ
  3. Q3.The structures A and B formed in the following reaction are : [Ph = − C6​H5​] Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  4. Q4.In which one of the following sets all species show disproportionation reaction?
    Chemistry · D and F Block Elements · MCQ
  5. Q5.Match List - I with List - II Choose the most appropriate answer from the options given below : Includes table
    Chemistry · Electrochemistry · MCQ
  6. Q6.The major products A and B formed in the following reaction sequence are : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  7. Q7.Which of the following is not an example of fibrous protein?
    Chemistry · Biomolecules · MCQ
  8. Q8.For the reaction given below :- The compound which is not formed as a product in the reaction is a : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  9. Q9.Spin only magnetic moment in BM of [Fe(CO)4​(C2​O4​)]+ is :
    Chemistry · Coordination Compounds · MCQ
  10. Q10.The incorrect expression among the following is :
    Chemistry · Thermodynamics · MCQ
  11. Q11.Match List - I with List - II : Choose the most appropriate answer from the options given below : Includes table
    Chemistry · Periodic Table and Periodicity · MCQ
  12. Q12.The major product of the following reaction is : Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  13. Q13.For the following sequence of reactions, the correct products are : Includes diagram
    Chemistry · Hydrocarbons · MCQ
  14. Q14.Identify correct A, B and C in the reaction sequence given below : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  15. Q15.1.22 g of an organic acid is separately dissolved in 100 g of benzene (Kb = 2.6 K kg mol − 1) and 100 g of acetone (Kb = 1.7 K kg mol − 1). The acid is known to dimerize in benzene but remain as a monomer in acetone. The boiling point…
    Chemistry · Solutions · Numerical
  16. Q16.The value of magnetic quantum number of the outermost electron of Zn+ ion is ​.
    Chemistry · D and F Block Elements · Numerical
  17. Q17.The pH of a solution obtained by mixing 50 mL of 1 M HCl and 30 mL of 1 M NaOH is x × 10 − 4. The value of x is ​. (Nearest integer) [log 2.5 = 0.3979]
    Chemistry · Ionic Equilibrium · Numerical
  18. Q18.For the reaction A → B, the rate constant k(in s − 1) is given by log10​k=20.35−T(2.47×103)​ The energy of activation in kJ mol − 1 is ​. (Nearest integer) [Given : R =…
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  19. Q19.Sodium oxide reacts with water to produce sodium hydroxide. 20.0 g of sodium oxide is dissolved in 500 mL of water. Neglecting the change in volume, the concentration of the resulting NaOH solution is ​× 10…
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  20. Q20.According to molecular orbital theory, the number of unpaired electron(s) in O22−​ is :
    Chemistry · Chemical Bonding and Molecular Structure · Numerical
  21. Q21.The transformation occurring in Duma's method is given below : C2​H7​N+(2x+2y​)CuO→xCO2​+2y​H2​O+2z​N2​+(2x+2y​)Cu The value of y is ​…
    Chemistry · Practical Organic Chemistry · Numerical