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Chemistry · 2022 · 27 Jul · Shift 1

23 questions from this JEE Main paper

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2022 · 27 Jul · Shift 1
Chemistry

Chemistry · 2022 · 27 Jul · Shift 1

23 questions from this JEE Main paper

Some Basic Concepts of Chemistry3 questions Chemical Bonding and Molecular Structure3 questions Structure of Atom1 questions P Block Elements1 questions Solutions1 questions Periodic Table and Periodicity1 questions D and F Block Elements2 questions Basics of Organic Chemistry2 questions Alcohols Phenols and Ethers2 questions Biomolecules1 questions Compounds Containing Nitrogen1 questions Chemical Kinetics and Nuclear Chemistry1 questions Thermodynamics1 questions Ionic Equilibrium2 questions Coordination Compounds1 questions

Q1. $D$ solution of $D$ -glucose in water contains $10.8%$ of carbon by weight. The molality of the solution is nearest to (Given: Atomic Weights are, $H, 1 u; C, 12 u; O, 16 u$ …
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q2.Given below are two statements. Statement I: $O_{2}, Cu^{2 +}$ , and $Fe^{3 +}$ are weakly attracted by magnetic field and are magnetized in the same direction as magnetic field. Statement II: $NaCl$ and $H_{2} O$ …
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q3.Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Energy of $2 s$ orbital of hydrogen atom is greater than that of $2 s$ orbital of lithium. Reason R:…
Chemistry · Structure of Atom · MCQ
Q4.Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Activated charcoal adsorbs $S O_{2}$ more efficiently than $C H_{4}$ . Reason R : Gases with lower critical temperatures are…
Chemistry · P Block Elements · MCQ
Q5.Boiling point of a $2%$ aqueous solution of a non-volatile solute A is equal to the boiling point of $8%$ aqueous solution of a non-volatile solute B. The relation between molecular weights of A and B is
Chemistry · Solutions · MCQ
Q6.The incorrect statement is
Chemistry · Periodic Table and Periodicity · MCQ
Q7.Given below are two statements. Statement I : Iron (III) catalyst, acidified $K_{2} Cr_{2} O_{7}$ and neutral $KMnO_{4}$ have the ability to oxidise $I^{-}$ to $I_{2}$ independently.…
Chemistry · D and F Block Elements · MCQ
Q8.The total number of $Mn = O$ bonds in $Mn_{2} O_{7}$ is .
Chemistry · D and F Block Elements · MCQ
Q9.Given below are two statements: one is labelled as Assertion A and, the other is labelled as Reason R. Assertion A: [6] Annulene, [8] Annulene and cis-[10] Annulene, are respectively aromatic, not-aromatic and aromatic. Reason R: Planarity… Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q10.In the above reaction product B is : Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q11.A sugar 'X' dehydrates very slowly under acidic condition to give furfural which on further reaction with resorcinol gives the coloured product after sometime. Sugar 'X' is
Chemistry · Biomolecules · MCQ
Q12.In Carius method of estimation of halogen, $0.36 g$ of an organic compound gave $AgBr$ of $AgBr$ . Find out the percentage of bromine in the compound. (Molar masses : $AgBr = 188 g mol^{- 1}; Br = 80 g mol^{- 1}$ …
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q13.Match List I with List II. Choose the correct answer from the options given below: Includes table
Chemistry · Compounds Containing Nitrogen · MCQ
Q14. $0.02 M K_{2} Cr_{2} O_{7}$ of $0.02 M K_{2} Cr_{2} O_{7}$ solution is used for the titration of $Fe^{2 +}$ of $Fe^{2 +}$ solution in the acidic medium. The molarity of $Fe^{2 +}$ …
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q15. $2 NO + 2 H_{2} \to N_{2} + 2 H_{2} O$ The above reaction has been studied at $80 0^{\circ} C$ . The related data are given in the table below The order of the reaction with respect… Includes table
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q16.Amongst the following, the number of oxide(s) which are paramagnetic in nature is $Na_{2} O, KO_{2}, NO_{2}, N_{2} O, ClO_{2}, NO, SO_{2}, Cl_{2} O$ …
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q17.The molar heat capacity for an ideal gas at constant pressure is $20.785 J K^{- 1} mol^{- 1}$ . The change in internal energy is $300 K$ upon heating it from $500 K$ to $500 K$ .…
Chemistry · Thermodynamics · Numerical
Q18.According to MO theory, number of species/ions from the following having identical bond order is . $CN^{-}, NO^{+}, O_{2}, O_{2}^{+}, O_{2}^{2 +}$
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q19.At $CaF_{2}$ , the solubility of $CaF_{2}$ in water is $2.34 \times 1 0^{- 3} g /100 mL$ . The solubility product of $CaF_{2}$ is $\times 1 0^{- 8} (mol / L)^{3}$ …
Chemistry · Ionic Equilibrium · Numerical
Q20.The conductivity of a solution of complex with formula $CoCl_{3} (NH_{3})_{4}$ corresponds to 1 : 1 electrolyte, then the primary valency of central metal ion is .
Chemistry · Coordination Compounds · Numerical
Q21.In the titration of $KMnO_{4}$ and oxalic acid in acidic medium, the change in oxidation number of carbon at the end point is .
Chemistry · Ionic Equilibrium · Numerical
Q22.Optical activity of an enantiomeric mixture is $+ 12. 6^{\circ}$ and the specific rotation of $(+)$ isomer is $+ 3 0^{\circ}$ . The optical purity is $%$ .
Chemistry · Basics of Organic Chemistry · Numerical
Q23.In the following reaction The $%$ yield for reaction I is $60%$ and that of reaction II is $50%$ . The overall yield of the complete reaction is $%$ . [nearest integer] Includes diagram
Chemistry · Alcohols Phenols and Ethers · Numerical