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Chemistry · 2023 · 25 Jan · Shift 1

23 questions from this JEE Main paper
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Chemistry · 2023 · 25 Jan · Shift 1

23 questions from this JEE Main paper

Periodic Table and Periodicity1 questionsHydrocarbons1 questionsAlcohols Phenols and Ethers2 questionsBiomolecules1 questionsHaloalkanes and Haloarenes1 questionsSalt Analysis2 questionsAldehydes Ketones and Carboxylic Acids1 questionsSome Basic Concepts of Chemistry2 questionsStructure of Atom1 questionsBasics of Organic Chemistry2 questionsRedox Reactions1 questionsIonic Equilibrium1 questionsElectrochemistry1 questionsSolutions1 questionsThermodynamics1 questionsD and F Block Elements1 questionsCoordination Compounds1 questionsChemical Kinetics and Nuclear Chemistry1 questionsChemical Bonding and Molecular Structure1 questions
  1. Q1.Inert gases have positive electron gain enthalpy. Its correct order is :
    Chemistry · Periodic Table and Periodicity · MCQ
  2. Q2.The correct sequence of reagents for the preparation of Q and R is : Includes diagram
    Chemistry · Hydrocarbons · MCQ
  3. Q3.In the cumene to phenol preparation in presence of air, the intermediate is
    Chemistry · Alcohols Phenols and Ethers · MCQ
  4. Q4.Match items of Row I with those of Row II. Row I : Row II : (i) α-D-(−)-Fructofuranose(ii) β-D-(−)-Fructofuranose (iii) α-D-(−) Glucopyranose (iv) β-D-(−)-Glucopyranose Correct match… Includes diagram
    Chemistry · Biomolecules · MCQ
  5. Q5.The compound which will have the lowest rate towards nucleophilic aromatic substitution on treatment with OH − is
    Chemistry · Haloalkanes and Haloarenes · MCQ
  6. Q6.Match List I with List II Choose the correct answer from the options given below : Includes table
    Chemistry · Salt Analysis · MCQ
  7. Q7.Identify the product formed (A and E) Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  8. Q8.'25 volume' hydrogen peroxide means
    Chemistry · Some Basic Concepts of Chemistry · MCQ
  9. Q9.The radius of the 2nd orbit of Li2+ is x. The expected radius of the 3rd orbit of Be3+ is
    Chemistry · Structure of Atom · MCQ
  10. Q10.Which of the following conformations will be the most stable?
    Chemistry · Basics of Organic Chemistry · MCQ
  11. Q11.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Acetal / Ketal is stable in basic medium. Reason R : The high leaving tendency of alkoxide ion gives the stability to…
    Chemistry · Alcohols Phenols and Ethers · MCQ
  12. Q12.The correct order in aqueous medium of basic strength in case of methyl substituted amines is :
    Chemistry · Basics of Organic Chemistry · MCQ
  13. Q13.Match the List-I with List-II : Correct match is - Includes table
    Chemistry · Salt Analysis · MCQ
  14. Q14.The density of a monobasic strong acid (Molar mass 24.2 g/mol) is 1.21 kg/L. The volume of its solution required for the complete neutralization of 25 mL of 0.24 M NaOH is ​× 10 −2 mL (Nearest integer)
    Chemistry · Redox Reactions · Numerical
  15. Q15.A litre of buffer solution contains 0.1 mole of each of NH 3​ and NH 4​ Cl. On the addition of 0.02 mole of HCl by dissolving gaseous HCl, the pH of the solution is found to be ​× 10 −3(Nearest…
    Chemistry · Ionic Equilibrium · Numerical
  16. Q16.Consider the cell Pt(s)∣H2​(g)(1atm)∣H+(aq,[H+]=1)∣∣Fe3+(aq),Fe2+(aq)∣Pt(s) Given EFe3+/Fe2+o​=0.771V and EH+/1/2H2​o​=0V,T=298K…
    Chemistry · Electrochemistry · Numerical
  17. Q17.The osmotic pressure of solutions of PVC in cyclohexanone at 300 K are plotted on the graph. The molar mass of PVC is ​ g mol −1 (Nearest integer) (Given : R = 0.083 L atm K −1 mol −1) Includes diagram
    Chemistry · Solutions · Numerical
  18. Q18.In sulphur estimation, 0.471 g of an organic compound gave 1.4439 g of barium sulphate. The percentage of sulphur in the compound is ​ (Nearest Integer) (Given : Atomic mass Ba: 137 u, S: 32 u, O: 16 u)
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  19. Q19.An athlete is given 100 g of glucose (C 6​ H 12​ O 6​) for energy. This is equivalent to 1800kJ of energy. The 50% of this energy gained is utilized by the athlete for sports activities at the event. In order to avoid storage of…
    Chemistry · Thermodynamics · Numerical
  20. Q20.How many of the following metal ions have similar value of spin only magnetic moment in gaseous state? ​ (Given : Atomic number V, 23; Cr, 24; Fe, 26; Ni, 28) V 3+, Cr 3+, Fe 2+, Ni 3+
    Chemistry · D and F Block Elements · Numerical
  21. Q21.The number of paramagnetic species from the following is ​. [Ni(CN)4​]2−,[Ni(CO)4​],[NiCl4​]2−[Fe(CN)6​]4−,[Cu(NH3​)4​]2+[Fe(CN)6​]3−and[Fe(H2​O)6​]2+…
    Chemistry · Coordination Compounds · Numerical
  22. Q22.For the first order reaction A → B, the half life is 30 min. The time taken for 75% completion of the reaction is ​ min. (Nearest integer) Given : log 2 = 0.3010 log 3 = 0.4771 log 5 = 0.6989
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
  23. Q23.The total number of lone pairs of electrons on oxygen atoms of ozone is ​.
    Chemistry · Chemical Bonding and Molecular Structure · Numerical