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Chemistry · 2024 · 29 Jan · Shift 1

30 questions from this JEE Main paper

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2024 · 29 Jan · Shift 1
Chemistry

Chemistry · 2024 · 29 Jan · Shift 1

30 questions from this JEE Main paper

P Block Elements1 questions Periodic Table and Periodicity2 questions Alcohols Phenols and Ethers1 questions Hydrocarbons3 questions Compounds Containing Nitrogen1 questions Redox Reactions2 questions Practical Organic Chemistry1 questions Biomolecules2 questions Structure of Atom1 questions Chemical Bonding and Molecular Structure3 questions Coordination Compounds2 questions Thermodynamics1 questions Basics of Organic Chemistry1 questions D and F Block Elements1 questions Salt Analysis1 questions Haloalkanes and Haloarenes1 questions Electrochemistry1 questions Some Basic Concepts of Chemistry1 questions Chemical Equilibrium1 questions Chemical Kinetics and Nuclear Chemistry1 questions Aldehydes Ketones and Carboxylic Acids1 questions Solutions1 questions

Q1.Identify the incorrect pair from the following :
Chemistry · P Block Elements · MCQ
Q2.Given below are two statements : one is labelled as Assertion $A$ and the other is labelled as Reason $R$ : Assertion A : The first ionisation enthalpy decreases across a period. Reason $R$ : The increasing…
Chemistry · Periodic Table and Periodicity · MCQ
Q3.The major product(P) in the following reaction is Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q4.Identify product A and product B : Includes diagram
Chemistry · Hydrocarbons · MCQ
Q5.the arenium ion which is not involved in the bromination of Aniline is .
Chemistry · Compounds Containing Nitrogen · MCQ
Q6.Given below are two statements : Statement I : The electronegativity of group 14 elements from $Si$ to $Pb$ , gradually decreases. Statement II : Group 14 contains non-metallic, metallic, as well as metalloid elements. In…
Chemistry · Periodic Table and Periodicity · MCQ
Q7.Chlorine undergoes disproportionation in alkaline medium as shown below : $aCl_{2 (g)} + b OH_{(aq)}^{-} \to c ClO_{(aq)}^{-} + d Cl_{(aq)}^{-} + e H_{2} O_{(l)}$ …
Chemistry · Redox Reactions · MCQ
Q8.In chromyl chloride test for confirmation of $Cl^{-}$ ion, a yellow solution is obtained. Acidification of the solution and addition of amyl alcohol and $10% H_{2} O_{2}$ turns organic layer blue indicating…
Chemistry · Practical Organic Chemistry · MCQ
Q9.Type of amino acids obtained by hydrolysis of proteins is :
Chemistry · Biomolecules · MCQ
Q10.The correct set of four quantum numbers for the valence electron of rubidium atom $(Z = 37)$ is :
Chemistry · Structure of Atom · MCQ
Q11.The difference in energy between the actual structure and the lowest energy resonance structure for the given compound is
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q12.Match List I with List II Choose the correct answer from the options given below: Includes table
Chemistry · Coordination Compounds · MCQ
Q13.The final product A formed in the following multistep reaction sequence is Includes diagram
Chemistry · Hydrocarbons · MCQ
Q14.Which of the following is not correct?
Chemistry · Thermodynamics · MCQ
Q15.The interaction between $π$ bond and lone pair of electrons present on an adjacent atom is responsible for
Chemistry · Basics of Organic Chemistry · MCQ
Q16.In which one of the following metal carbonyls, $CO$ forms a bridge between metal atoms?
Chemistry · Coordination Compounds · MCQ
Q17. $KMnO_{4}$ decomposes on heating at $O_{2}$ to form $O_{2}$ along with
Chemistry · D and F Block Elements · MCQ
Q18.Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with $FeSO_{4}$ in presence of concentrated $H_{2} SO_{4}$ indicates the presence of element/s
Chemistry · Salt Analysis · MCQ
Q19.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Aryl halides cannot be prepared by replacement of hydroxyl group of phenol by halogen atom. Reason R : Phenols react with…
Chemistry · Haloalkanes and Haloarenes · MCQ
Q20.In alkaline medium, $MnO_{4}^{-}$ oxidises $I^{-}$ to
Chemistry · Redox Reactions · MCQ
Q21.The mass of zinc produced by the electrolysis of zine sulphate solution with a steady current of for 15 minutes is $\times 1 0^{- 4} g$ . (Atomic mass of zinc $= 65.4 amu$ )
Chemistry · Electrochemistry · Numerical
Q22.A solution of $H_{2} SO_{4}$ is $31.4% H_{2} SO_{4}$ by mass and has a density of $1.25 g / mL$ . The molarity of the $H_{2} SO_{4}$ solution is $M$ …
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q23.Consider the given reaction. The total number of oxygen atom/s present per molecule of the product $(P)$ is . Includes diagram
Chemistry · Hydrocarbons · Numerical
Q24.For the reaction $N_{2} O_{4 (g)} ⇄ 2 NO_{2 (g)}, K_{p} = 0.492 atm$ at $300 K . K_{c}$ for the reaction at same temperature…
Chemistry · Chemical Equilibrium · Numerical
Q25.The number of species from the following which are paramagnetic and with bond order equal to one is . $H_{2}, He_{2}^{+}, O_{2}^{+}, N_{2}^{2 -}, O_{2}^{2 -}, F_{2}, Ne_{2}^{+}, B_{2}$ …
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q26.For a reaction taking place in three steps at same temperature, overall rate constant $K = \frac{K _{1} K _{2}}{K _{3}}$ . If $Ea_{1}, Ea_{2}$ and $Ea_{3}$ are 40, 50 and $60 kJ / mol$ …
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q27.From the compounds given below, number of compounds which give positive Fehling's test is . Benzaldehyde, Acetaldehyde, Acetone, Acetophenone, Methanal, 4nitrobenzaldehyde, cyclohexane carbaldehyde.
Chemistry · Aldehydes Ketones and Carboxylic Acids · Numerical
Q28.Number of compounds with one lone pair of electrons on central atom amongst following is . $O_{3}, H_{2} O, SF_{4}, ClF_{3}, NH_{3}, BrF_{5}, XeF_{4}$
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q29.Number of compounds among the following which contain sulphur as heteroatom is . Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine
Chemistry · Biomolecules · Numerical
Q30.The osmotic pressure of a dilute solution is $7 \times 1 0^{5} Pa$ at $283 K$ . Osmotic pressure of the same solution at is $\times 1 0^{4} Nm^{- 2}$ .
Chemistry · Solutions · Numerical