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Chemistry · 2023 · 1 Feb · Shift 2

23 questions from this JEE Main paper
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Chemistry · 2023 · 1 Feb · Shift 2

23 questions from this JEE Main paper

Chemical Bonding and Molecular Structure1 questionsBiomolecules3 questionsHydrocarbons1 questionsAldehydes Ketones and Carboxylic Acids2 questionsPractical Organic Chemistry1 questionsD and F Block Elements3 questionsChemical Equilibrium1 questionsStructure of Atom1 questionsP Block Elements1 questionsElectrochemistry2 questionsCoordination Compounds2 questionsAlcohols Phenols and Ethers1 questionsSolutions1 questionsThermodynamics1 questionsSome Basic Concepts of Chemistry1 questionsChemical Kinetics and Nuclear Chemistry1 questions
  1. Q1.O−O bond length in H2​O2​ is X​ than the O−O bond length in F2​O2​. The O−H bond length in H2​O2​…
    Chemistry · Chemical Bonding and Molecular Structure · MCQ
  2. Q2.All structures given below are of vitamin C. Most stable of them is :
    Chemistry · Biomolecules · MCQ
  3. Q3.'X' is : Includes diagram
    Chemistry · Hydrocarbons · MCQ
  4. Q4.In a reaction, reagents 'X' and 'Y' respectively are : Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  5. Q5.Given below are two statements : Statement I : Sulphanilic acid gives esterification test for carboxyl group. Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection. In the light of the above…
    Chemistry · Practical Organic Chemistry · MCQ
  6. Q6.Which element is not present in Nessler's reagent?
    Chemistry · D and F Block Elements · MCQ
  7. Q7.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : α-halocarboxylic acid on reaction with dil. NH3​ gives good yield of α-amino carboxylic…
    Chemistry · Biomolecules · MCQ
  8. Q8.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Cu2+ in water is more stable than Cu+. Reason (R) : Enthalpy of hydration for Cu2+…
    Chemistry · D and F Block Elements · MCQ
  9. Q9.The effect of addition of helium gas to the following reaction in equilibrium state, is : PCl5​(g)⇌PCl3​(g)+Cl2​(g)
    Chemistry · Chemical Equilibrium · Multiple correct
  10. Q10.Which one of the following sets of ions represents a collection of isoelectronic species? (Given : Atomic Number : F:9,Cl:17,Na=11,Mg=12,Al=13,K=19,Ca=20,Sc=21)
    Chemistry · Structure of Atom · MCQ
  11. Q11.For electron gain enthalpies of the elements denoted as Δeg​H, the incorrect option is :
    Chemistry · P Block Elements · MCQ
  12. Q12.Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A) : An aqueous solution of KOH when used for volumetric analysis, its concentration should be checked before…
    Chemistry · Electrochemistry · MCQ
  13. Q13.The complex cation which has two isomers is :
    Chemistry · Coordination Compounds · MCQ
  14. Q14.The structures of major products A, B and C in the following reaction are sequence. Includes diagram
    Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
  15. Q15.The graph which represents the following reaction is : Includes diagram
    Chemistry · Alcohols Phenols and Ethers · MCQ
  16. Q16.Among following compounds, the number of those present in copper matte is ​. A. CuCO3​ B. Cu2​S C. Cu2​O D. FeO
    Chemistry · D and F Block Elements · Numerical
  17. Q17.1×10−5 M AgNO3​ is added to 1 L of saturated solution of AgBr. The conductivity of this solution at 298 K is ​×10−8 S m−1…
    Chemistry · Electrochemistry · Numerical
  18. Q18.Testosterone, which is a steroidal hormone, has the following structure. The total number of asymmetric carbon atom/s in testosterone is ​. Includes diagram
    Chemistry · Biomolecules · Numerical
  19. Q19.20% of acetic acid is dissociated when its 5 g is added to 500 mL of water. The depression in freezing point of such water is ​×10−3∘C. Atomic mass of C,H…
    Chemistry · Solutions · Numerical
  20. Q20.0.3 g of ethane undergoes combustion at 27∘C in a bomb calorimeter. The temperature of calorimeter system (including the water) is found to rise by 0.5∘C. The heat evolved during combustion…
    Chemistry · Thermodynamics · Numerical
  21. Q21.The molality of a 10%(v/v) solution of di-bromine solution in CCl4​ (carbon tetrachloride) is 'x'. x=​×10−2 M. (Nearest integer) [Given : molar mass of Br2​=160 g mol−1…
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  22. Q22.The spin only magnetic moment of [Mn(H2​O)6​]2+ complexes is ​ B.M. (Nearest integer) (Given : Atomic no. of Mn is 25)
    Chemistry · Coordination Compounds · Numerical
  23. Q23.A →B The above reaction is of zero order. Half life of this reaction is 50 min. The time taken for the concentration of A to reduce to one-fourth of its initial value is ​…
    Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical