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Chemistry · 2021 · 18 Mar · Shift 2

22 questions from this JEE Main paper
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Chemistry · 2021 · 18 Mar · Shift 2

22 questions from this JEE Main paper

Biomolecules1 questionsBasics of Organic Chemistry1 questionsCompounds Containing Nitrogen3 questionsHaloalkanes and Haloarenes2 questionsD and F Block Elements1 questionsCoordination Compounds1 questionsPeriodic Table and Periodicity1 questionsStructure of Atom1 questionsRedox Reactions1 questionsAldehydes Ketones and Carboxylic Acids3 questionsSome Basic Concepts of Chemistry1 questionsChemical Bonding and Molecular Structure1 questionsElectrochemistry1 questionsChemical Equilibrium1 questionsChemical Kinetics and Nuclear Chemistry1 questionsIonic Equilibrium1 questionsSolutions1 questions
  1. Q1.Deficiency of vitamin K causes :
    Chemistry · Biomolecules · MCQ
  2. Q2.In the following molecule, Hybridisation of Carbon a, b, and c respectively are : Includes diagram
    Chemistry · Basics of Organic Chemistry · MCQ
  3. Q3.Consider the given reaction, percentage yield of : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  4. Q4.Given below are two statements : Statement I : C2​H5​OH and AgCN both can generate nucleophile. Statement II : KCN and AgCN both will generate nitrile nucleophile with all reaction conditions. Choose the most appropriate option :
    Chemistry · Haloalkanes and Haloarenes · MCQ
  5. Q5.The oxide that shows magnetic property is :
    Chemistry · D and F Block Elements · MCQ
  6. Q6.In the reaction of hypobromite with amide, the carbonyl carbon is lost as :
    Chemistry · Compounds Containing Nitrogen · MCQ
  7. Q7.The secondary valency and the number of hydrogen bonded water molecule(s) in CuSO4​ . 5H2​O, respectively, are :
    Chemistry · Coordination Compounds · MCQ
  8. Q8.The first ionization energy of magnesium is smaller as compared to that of elements X and Y, but higher than that of Z. The elements X, Y and Z, respectively, are :
    Chemistry · Periodic Table and Periodicity · MCQ
  9. Q9.Given below are two statements : Statement I : Bohr's theory accounts for the stability and line spectrum of Li+ ion. Statement II : Bohr's theory was unable to explain the splitting of spectral lines in the presence of a magnetic…
    Chemistry · Structure of Atom · MCQ
  10. Q10.The oxidation states of nitrogen in NO, NO2​, N2​O and NO 3−​ are in the order of :
    Chemistry · Redox Reactions · MCQ
  11. Q11.An organic compound "A" on treatment with benzene sulphonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is :
    Chemistry · Compounds Containing Nitrogen · MCQ
  12. Q12.Main products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are :
    Chemistry · Haloalkanes and Haloarenes · MCQ
  13. Q13.Consider the above reaction, the product 'X' and 'Y' respectively are : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  14. Q14.In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula [Ag(NH3​)2​]+ per aldehyde group to form silver mirror is ​. (Round off to the Nearest Integer).
    Chemistry · Aldehydes Ketones and Carboxylic Acids · Numerical
  15. Q15.10.0 mL of Na2​CO3​ solution is titrated against 0.2 M HCl solution. The following titre values were obtained in 5 readings : 4.8 mL, 4.9 mL, 5.0 mL, 5.0 mL and 5.0 mL Based on these readings, and convention of titrimetric estimation…
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  16. Q16.The number of species below that have two lone pairs of electrons in their central atom is ​. (Round off to the Nearest Integer). SF4​, BF 4−​, ClF3​, AsF3​, PCl5​, BrF5​, XeF4​, SF6​
    Chemistry · Chemical Bonding and Molecular Structure · Numerical
  17. Q17.Consider the above reaction where 6.1 g of Benzoic acid is used to get 7.8 g of m-bromo benzoic acid. The percentage yield of the product is ​ (Round off to the Nearest Integer). [Given : Atomic masses : C : 12.0… Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · Numerical
  18. Q18.The molar conductivities at infinite dilution of barium chloride, sulphuric acid and hydrochloric acid are 280, 860 and 426 S cm2 mol − 1 respectively. The molar conductivity at infinite dilution of barium sulphate is ​…
    Chemistry · Electrochemistry · Numerical
  19. Q19.The gas phase reaction 2A(g)⇌A2​(g) at 400 K has Δ Go = + 25.2 kJ mol-1. The equilibrium constant KC for this reaction is ​× 10 − 2. (Round off to the Nearest Integer). [Use :…
    Chemistry · Chemical Equilibrium · Numerical
  20. Q20.A reaction has a half life of 1 min. The time required for 99.9% completion of the reaction is ​ min. (Round off to the Nearest Integer). [Use : ln 2 = 0.69; ln 10 = 2.3]
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  21. Q21.The solubility of CdSO4​ in water is 8.0 × 10 − 4 mol L − 1. Its solubility in 0.01 M H2​SO4​ solution is ​× 10 − 6 mol L − 1. (Round off to the Nearest Integer). (Assume that solubility is…
    Chemistry · Ionic Equilibrium · Numerical
  22. Q22.A solute A dimerizes in water. The boiling point of a 2 molal solution of A is 100.52 ∘ C. The percentage association of A is ​. (Round off to the Nearest Integer). [Use : Kb for water = 0.52 K kg mol − 1…
    Chemistry · Solutions · Numerical