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Chemistry · 2021 · 26 Aug · Shift 2

22 questions from this JEE Main paper
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Chemistry · 2021 · 26 Aug · Shift 2

22 questions from this JEE Main paper

Alcohols Phenols and Ethers1 questionsChemical Bonding and Molecular Structure1 questionsBiomolecules1 questionsCompounds Containing Nitrogen3 questionsPeriodic Table and Periodicity1 questionsCoordination Compounds3 questionsBasics of Organic Chemistry2 questionsHaloalkanes and Haloarenes2 questionsPractical Organic Chemistry1 questionsChemical Equilibrium2 questionsThermodynamics1 questionsStructure of Atom1 questionsElectrochemistry1 questionsSome Basic Concepts of Chemistry1 questionsSolutions1 questions
  1. Q1.Which one of the following phenols does not give colour when condensed with phthalic anhydride in presence of conc. H2​SO4​ ?
    Chemistry · Alcohols Phenols and Ethers · MCQ
  2. Q2.The bond order and magnetic behaviour of O2−​ ion are respectively :
    Chemistry · Chemical Bonding and Molecular Structure · MCQ
  3. Q3.Given below are two statements : one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Sucrose is a disaccharide and a non-reducing sugar. Reason (R) : Sucrose involves glycosidic linkage between C1 of β…
    Chemistry · Biomolecules · MCQ
  4. Q4.Match List - I with List - II : Choose the most appropriate match : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  5. Q5.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Barium carbonate is insoluble in water and is highly stable. Reason (R) : The thermal stability of the carbonates…
    Chemistry · Periodic Table and Periodicity · MCQ
  6. Q6.The major product in the above reaction is : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  7. Q7.Indicate the complex/complex ion which did not show any geometrical isomerism :
    Chemistry · Coordination Compounds · MCQ
  8. Q8.Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE) value. Complexes : A[CoF6​]3−​,B[Co(H2​O)6​]2+​,C[Co(NH3​)6​]3+​andD[Co(en)3​]3+​…
    Chemistry · Coordination Compounds · MCQ
  9. Q9.Which one of the following compounds is not aromatic?
    Chemistry · Basics of Organic Chemistry · MCQ
  10. Q10.The number of stereoisomers possible for 1, 2-dimethyl cyclopropane is :
    Chemistry · Basics of Organic Chemistry · MCQ
  11. Q11.Consider the given reaction, identify 'X' and 'Y' : Includes diagram
    Chemistry · Compounds Containing Nitrogen · MCQ
  12. Q12.Consider the given reaction, the product A is : Includes diagram
    Chemistry · Haloalkanes and Haloarenes · MCQ
  13. Q13.In the sulphur estimation, 0.471 g of an organic compound gave 1.44 g of barium sulphate. The percentage of sulphur in the compound is ​%. (Nearest integer) (Atomic Mass of Ba = 137 u)
    Chemistry · Practical Organic Chemistry · Numerical
  14. Q14.The equilibrium constant Kc at 298 K for the reaction A + B ⇌ C + D is 100. Starting with an equimolar solution with concentrations of A, B, C and D all equal to 1M, the equilibrium concentration of D is ​…
    Chemistry · Chemical Equilibrium · Numerical
  15. Q15.For water Δ vap H = 41 kJ mol − 1 at 373 K and 1 bar pressure. Assuming that water vapour is an ideal gas that occupies a much larger volume than liquid water, the internal energy change during evaporation of water is ​…
    Chemistry · Thermodynamics · Numerical
  16. Q16.A metal surface is exposed to 500 nm radiation. The threshold frequency of the metal for photoelectric current is 4.3 × 1014 Hz. The velocity of ejected electron is ​× 105 ms − 1 (Nearest integer)…
    Chemistry · Structure of Atom · Numerical
  17. Q17.For the galvanic cell, Zn(s) + Cu2+ (0.02 M) → Zn2+ (0.04 M) + Cu(s), Ecell = ​× 10 − 2 V. (Nearest integer) [Use : ECu/Cu2+0​=− 0.34 V, EZn/Zn2+0​= + 0.76 V, F2.303RT​=0.059V…
    Chemistry · Electrochemistry · Numerical
  18. Q18.100 mL of Na3​PO4​ solution contains 3.45 g of sodium. The molarity of the solution is ​× 10 − 2 mol L − 1. (Nearest integer) [Atomic Masses - Na : 23.0 u, O : 16.0 u, P : 31.0 u]
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  19. Q19.The overall stability constant of the complex ion [Cu(NH3​)4​]2+ is 2.1 × 1013. The overall dissociations constant is y × 10 − 14. Then y is ​. (Nearest integer)
    Chemistry · Coordination Compounds · Numerical
  20. Q20.83 g of ethylene glycol dissolved in 625 g of water. The freezing point of the solution is ​ K. (Nearest integer) [Use : Molal Freezing point depression constant of water = 1.86 K kg mol − 1] Freezing Point of…
    Chemistry · Solutions · Numerical
  21. Q21.The reaction rate for the reaction [PtCl4​]2−+ H2​O ⇌[Pt(H2​O)Cl3​]− + Cl− was measured as a function of concentrations of different species. It was observed that dt−d[[PtCl4​]2−]​=4.8×10−5[[PtCl4​]2−]−2.4×10−3[[Pt(H2​O)Cl3​]−][Cl−]…
    Chemistry · Chemical Equilibrium · Numerical
  22. Q22.A chloro compound "A". (i) forms aldehydes on ozonolysis followed by the hydrolysis. (ii) when vaporized completely 1.53 g of A, gives 448 mL of vapour at STP. The number of carbon atoms in a molecule of compound A is ​…
    Chemistry · Haloalkanes and Haloarenes · Numerical