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Chemistry · 2023 · 13 Apr · Shift 1

22 questions from this JEE Main paper

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2023 · 13 Apr · Shift 1
Chemistry

Chemistry · 2023 · 13 Apr · Shift 1

22 questions from this JEE Main paper

Chemical Bonding and Molecular Structure2 questions Periodic Table and Periodicity1 questions Haloalkanes and Haloarenes1 questions Aldehydes Ketones and Carboxylic Acids1 questions Coordination Compounds1 questions Basics of Organic Chemistry1 questions Alcohols Phenols and Ethers1 questions D and F Block Elements1 questions Compounds Containing Nitrogen1 questions Hydrocarbons2 questions Biomolecules1 questions Structure of Atom1 questions Practical Organic Chemistry1 questions Some Basic Concepts of Chemistry2 questions Chemical Kinetics and Nuclear Chemistry1 questions Solutions1 questions Electrochemistry1 questions Thermodynamics1 questions Ionic Equilibrium1 questions

Q1.In which of the following processes, the bond order increases and paramagnetic character changes to diamagnetic one ?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q2.Which of the following statements are not correct? A. The electron gain enthalpy of $F$ is more negative than that of $Cl$ . B. Ionization enthalpy decreases in a group of periodic table. C. The electronegativity of an…
Chemistry · Periodic Table and Periodicity · MCQ
Q3.In the following reaction 'X' is Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q4.In the reaction given below 'A' is Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q5.The mismatched combinations are A. Chlorophyll - $C o$ B. Water hardness - $E D T A$ C. Photography $- [Ag (CN)_{2}]^{-}$ D. Wilkinson catalyst $- [(Ph_{3} P)_{3} RhCl]$ …
Chemistry · Coordination Compounds · MCQ
Q6. $ClF_{5}$ at room temperature is a:
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q7.Among the following compounds, the one which shows highest dipole moment is
Chemistry · Basics of Organic Chemistry · MCQ
Q8.2-Methyl propyl bromide reacts with $C_{2} H_{5} O^{-}$ and gives 'A' whereas on reaction with $C_{2} H_{5} OH$ it gives 'B'. The mechanism followed in these reactions and the products…
Chemistry · Alcohols Phenols and Ethers · MCQ
Q9.The pair of lanthanides in which both elements have high third - ionization energy is :
Chemistry · D and F Block Elements · MCQ
Q10.In the reaction given below 'B' is Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q11.In the above reaction, left hand side and right hand side rings are named as ' $A$ ' and 'B' respectively. They undergo ring expansion. The correct statement for this process is: Includes diagram
Chemistry · Hydrocarbons · MCQ
Q12.The products formed in the above reaction are Includes diagram
Chemistry · Biomolecules · MCQ
Q13.The energy of an electron in the first Bohr orbit of hydrogen atom is $- 2.18 \times 1 0^{- 18} J$ . Its energy in the third Bohr orbit is .
Chemistry · Structure of Atom · MCQ
Q14. $KMnO_{4}$ is titrated with ferrous ammonium sulphate hexahydrate in presence of dilute $H_{2} SO_{4}$ . Number of water molecules produced for 2 molecules of $KMnO_{4}$ is .
Chemistry · Practical Organic Chemistry · Numerical
Q15.An organic compound gives $CO_{2}$ of $CO_{2}$ and $H_{2} O$ of $H_{2} O$ on complete combustion. If the $%$ of carbon is 24 then the $%$ of hydrogen is $\times 1 0^{- 1}$ …
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q16. $t_{87.5}$ is the time required for the reaction to undergo $87.5%$ completion and $t_{50}$ is the time required for the reaction to undergo $50%$ completion. The relation between $t_{87.5}$ and $t_{50}$ …
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q17.For the given reaction The total number of possible products formed by tertiary carbocation of A is . Includes diagram
Chemistry · Hydrocarbons · Numerical
Q18. $10 mL$ of calcium hydroxide was consumed when it was reacted with $H_{2} SO_{4}$ of unknown solution of $H_{2} SO_{4}$ . Also $0.5 M HCl$ standard solution of $0.5 M HCl$ containing…
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q19.Solution of $1000 mL$ of non-electrolyte (A) prepared by dissolving it in $0.05 M$ of water exerts the same osmotic pressure as that of $0.05 M$ glucose solution at the same temperature. The empirical formula of…
Chemistry · Solutions · Numerical
Q20.A metal surface of $100 cm^{2}$ area has to be coated with nickel layer of thickness $2 A$ . A current of $Ni (NO_{3})_{2}$ was passed through a solution of $Ni (NO_{3})_{2}$ for ' $x$ …
Chemistry · Electrochemistry · Numerical
Q21. $A_{2} + B_{2} \to 2 AB .Δ H_{f}^{0} = - 200 kJ mol^{- 1}$ $AB, A_{2}$ and $B_{2}$ are diatomic molecules. If the bond enthalpies of $A_{2}, B_{2}$ …
Chemistry · Thermodynamics · Numerical
Q22. $0.050 M Ba (NO_{3})_{2}$ of $0.050 M Ba (NO_{3})_{2}$ is mixed with $0.020 M NaF . K_{Sp}$ of $0.020 M NaF . K_{Sp}$ of $BaF_{2}$ is $0.5 \times 1 0^{- 6}$ at $298 K$ …
Chemistry · Ionic Equilibrium · Numerical