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Chemistry · 2021 · 27 Aug · Shift 1

22 questions from this JEE Main paper
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Chemistry · 2021 · 27 Aug · Shift 1

22 questions from this JEE Main paper

Alcohols Phenols and Ethers2 questionsAldehydes Ketones and Carboxylic Acids1 questionsChemical Bonding and Molecular Structure2 questionsCompounds Containing Nitrogen2 questionsPractical Organic Chemistry3 questionsD and F Block Elements2 questionsBiomolecules1 questionsHaloalkanes and Haloarenes1 questionsP Block Elements1 questionsSome Basic Concepts of Chemistry1 questionsChemical Kinetics and Nuclear Chemistry1 questionsStructure of Atom1 questionsSolutions1 questionsCoordination Compounds1 questionsThermodynamics1 questionsChemical Equilibrium1 questions
  1. Q1.In the following sequence of reactions, the final product D is : Includes diagram
    Chemistry · Alcohols Phenols and Ethers · MCQ
  2. Q2.The structure of the starting compound P used in the reaction given below is : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  3. Q3.Match List - I with List - II : Choose the most appropriate answer from the options given below : Includes diagram
    Chemistry · Chemical Bonding and Molecular Structure · MCQ
  4. Q4.Match items of List-I with those of List-II : Choose the most appropriate answer from the options given below : Includes table
    Chemistry · Chemical Bonding and Molecular Structure · MCQ
  5. Q5.The major product of the following reaction is : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  6. Q6.Which of the following is not a correct statement for primary aliphatic amines?
    Chemistry · Compounds Containing Nitrogen · MCQ
  7. Q7.Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is :
    Chemistry · Practical Organic Chemistry · MCQ
  8. Q8.The nature of oxides V2​O3​ and CrO is indexed as 'X' and 'Y' type respectively. The correct set of X and Y is :
    Chemistry · D and F Block Elements · MCQ
  9. Q9.Out of following isomeric forms of uracil, which one is present in RNA?
    Chemistry · Biomolecules · MCQ
  10. Q10.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Synthesis of ethyl phenyl ether may be achieved by Williamson synthesis. Reason (R) : Reaction of bromobenzene with…
    Chemistry · Alcohols Phenols and Ethers · MCQ
  11. Q11.In the following sequence of reactions the P is : Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  12. Q12.In polythionic acid, H2​Sx​O6​ (x = 3 to 5) the oxidation state(s) of sulphur is/are :
    Chemistry · P Block Elements · MCQ
  13. Q13.In Carius method for estimation of halogens, 0.2 g of an organic compound gave 0.188 g of AgBr. The percentage of bromine in the compound is ​. (Nearest integer) [Atomic mass : Ag = 108, Br = 80]
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  14. Q14.The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person's blood stream is 2K2​Cr2​O7​+8H2​SO4​+3C2​H6​O→2Cr2​(SO4​)3​+3C2​H4​O2​+2K2​SO4​+11H2​O…
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  15. Q15.The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is equal to xma02​h2​. The value of 10x is ​. (a0 is radius of Bohr's orbit) (Nearest integer) [Given : π = 3.14]
    Chemistry · Structure of Atom · Numerical
  16. Q16.1 kg of 0.75 molal aqueous solution of sucrose can be cooled up to − 4 ∘ C before freezing. The amount of ice (in g) that will be separated out is ​. (Nearest integer) [Given : Kf(H2​O) = 1.86 K kg mol −…
    Chemistry · Solutions · Numerical
  17. Q17.1 mol of an octahedral metal complex with formula MCl3​ . 2L on reaction with excess of AgNO3​ gives 1 mol of AgCl. The denticity of Ligand L is ​. (Integer answer)
    Chemistry · Coordination Compounds · Numerical
  18. Q18.The number of moles of CuO, that will be utilized in Dumas method for estimation nitrogen in a sample of 57.5 g of N, N-dimethylaminopentane is ​× 10 − 2. (Nearest integer)
    Chemistry · Practical Organic Chemistry · Numerical
  19. Q19.The number of f electrons in the ground state electronic configuration of Np (Z = 93) is ​. (Nearest integer)
    Chemistry · D and F Block Elements · Numerical
  20. Q20.200 mL of 0.2 M HCl is mixed with 300 mL of 0.1 M NaOH. The molar heat of neutralization of this reaction is − 57.1 kJ. The increase in temperature in ∘ C of the system on mixing is x × 10 − 2. The value of x is ​…
    Chemistry · Thermodynamics · Numerical
  21. Q21.The number of moles of NH3​, that must be added to 2L of 0.80 M AgNO3​ in order to reduce the concentration of Ag+ ions to 5.0 × 10 − 8 M (Kformation for [Ag(NH3​)2​]+ = 1.0 × 108) is ​.…
    Chemistry · Chemical Equilibrium · Numerical
  22. Q22.When 10 mL of an aqueous solution of KMnO4​ was titrated in acidic medium, equal volume of 0.1 M of an aqueous solution of ferrous sulphate was required for complete discharge of colour. The strength of KMnO4​ in grams per litre is ​×…
    Chemistry · Practical Organic Chemistry · Numerical