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Chemistry · 2021 · 24 Feb · Shift 2

22 questions from this JEE Main paper

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2021 · 24 Feb · Shift 2
Chemistry

Chemistry · 2021 · 24 Feb · Shift 2

22 questions from this JEE Main paper

Hydrocarbons1 questions D and F Block Elements2 questions Basics of Organic Chemistry1 questions Structure of Atom1 questions Aldehydes Ketones and Carboxylic Acids3 questions Chemical Bonding and Molecular Structure2 questions Compounds Containing Nitrogen3 questions Coordination Compounds1 questions Biomolecules1 questions Some Basic Concepts of Chemistry2 questions Ionic Equilibrium1 questions Thermodynamics1 questions Solutions1 questions Chemical Kinetics and Nuclear Chemistry1 questions Electrochemistry1 questions

Q1.The correct order of the following compounds showing increasing tendency towards nucleophilic substitution reaction is : Includes diagram
Chemistry · Hydrocarbons · MCQ
Q2.The incorrect statement among the following is :
Chemistry · D and F Block Elements · MCQ
Q3.Which one of the following compounds is non-aromatic?
Chemistry · Basics of Organic Chemistry · MCQ
Q4.According to Bohr's atomic theory : (A) Kinetic energy of electron is $\propto \frac{Z ^{2}}{n ^{2}}$ . (B) The product of velocity (v) of electron and principal quantum number (n), $^{'} v n^{'} \propto Z^{2}$ . (C) Frequency of revolution of…
Chemistry · Structure of Atom · MCQ
Q5.Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of $H g S O_{4}$ and $H_{2} S O_{4}$ ?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q6.The correct set from the following in which both pairs are in correct order of melting point is :
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q7.What is the correct sequence of reagents used for converting nitrobenzene into m-dibromobenzene? Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q8.The calculated magnetic moments (spin only value) for species $[F e C l_{4}]^{2 -}$ , $[C o (C_{2} O_{4})_{3}]^{3 -}$ and $M n O_{4}^{2 -}$ respectively are :
Chemistry · Coordination Compounds · MCQ
Q9.Which of the following reagent is suitable for the preparation of the product in the above reaction? Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q10.What is the correct order of the following elements with respect to their density?
Chemistry · D and F Block Elements · MCQ
Q11.Match List - I and List - II. Includes table
Chemistry · Biomolecules · MCQ
Q12.The correct shape and $I - I - I$ bond angles respectively in $I_{3}^{-}$ ion are :
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q13.The diazonium salt of which of the following compounds will form a coloured dye on reaction with $β$ -Naphthol in NaOH?
Chemistry · Compounds Containing Nitrogen · MCQ
Q14.Match List - I and List - II. Choose the correct answer from the options given below : Includes table Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q15.The formula of a gaseous hydrocarbon which requires 6 times of its own volume of $O_{2}$ for complete oxidation and produces 4 times its own volume of $C O_{2}$ is CxHy. The value of y is .
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q16.The solubility product of $P b I_{2}$ is 8.0 $\times$ 10 $-$ 9. The solubility of lead iodide in 0.1 molar solution of lead nitrate is x $\times$ 10 $-$ 6. mol/L. The value of x is . (Rounded off to the nearest…
Chemistry · Ionic Equilibrium · Numerical
Q17.1.86 g of aniline completely reacts to form acetanilide. 10% of the product is lost during purification. Amount of acetanilide obtained after purification (in g) is $\times$ 10 $-$ 2.
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q18.Assuming ideal behaviour, the magnitude of log K for the following reaction at 25 $^{\circ}$ C is x $\times$ 10 $-$ 1. The value of x is . (Integer answer) $$3HC \equiv C{H_{(g)}} \rightleftharpoons…
Chemistry · Thermodynamics · Numerical
Q19. $C_{6} H_{6}$ freezes at 5.5 $^{\circ}$ C. The temperature at which a solution of 10g of $C_{4} H_{10}$ in 200g of $C_{6} H_{6}$ freeze is $^{\circ}$ C. (The molal freezing point depression constant of $C_{6} H_{6}$ is 5.12 $^{\circ}$ C/m.)
Chemistry · Solutions · Numerical
Q20.Sucrose hydrolyses in acid solution into glucose and fructose following first order rate law with a half-life of 3.33 h at 25 $^{\circ}$ C. After 9 h, the fraction of sucrose remaining is f. The value of $lo g_{10} (\frac{1}{f})$ …
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical
Q21.The magnitude of the change in oxidising power of the $M n O_{4}^{-} / M n^{2 +}$ couple is x $\times$ 10 $-$ 4 V, if the $H^{+}$ concentration is decreased from 1M to 10 $-$ 4 M at 25 $^{\circ}$ C. (Assume concentration of $M n O_{4}^{-}$ and $M n^{2 +}$ …
Chemistry · Electrochemistry · Numerical
Q22.The total number of amines among the following which can be synthesized by Gabriel synthesis is . Includes diagram
Chemistry · Compounds Containing Nitrogen · Numerical