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Chemistry · 2021 · 25 Feb · Shift 1

23 questions from this JEE Main paper

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2021 · 25 Feb · Shift 1
Chemistry

Chemistry · 2021 · 25 Feb · Shift 1

23 questions from this JEE Main paper

Ionic Equilibrium1 questions Aldehydes Ketones and Carboxylic Acids3 questions Structure of Atom1 questions Hydrocarbons2 questions D and F Block Elements2 questions Haloalkanes and Haloarenes1 questions Biomolecules1 questions Chemical Bonding and Molecular Structure2 questions Some Basic Concepts of Chemistry2 questions Coordination Compounds1 questions Compounds Containing Nitrogen1 questions Basics of Organic Chemistry1 questions Thermodynamics2 questions Redox Reactions1 questions Solutions1 questions Chemical Kinetics and Nuclear Chemistry1 questions

Q1.The solubility of AgCN in a buffer solution of pH = 3 is x. The value of x is : [Assume : No cyano complex is formed; Ksp(AgCN) = 2.2 $\times$ 10 $-$ 16 and Ka(HCN) = 6.2 $\times$ 10 $-$ 10]
Chemistry · Ionic Equilibrium · MCQ
Q2.Which one of the following reactions will not form acetaldehyde?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q3.The plots of radial distribution functions for various orbitals of hydrogen atom against 'r' are given below : The correct plot for 3s orbital is : Includes diagram
Chemistry · Structure of Atom · MCQ
Q4.Identify A in the given chemical reaction. Includes diagram
Chemistry · Hydrocarbons · MCQ
Q5.Given below are two statements : Statement I : $C e O_{2}$ can be used for oxidation of aldehydes and ketones. Statement II : Aqueous solution of $E u S O_{4}$ is a strong reducing agent. In the light of the above statements, choose the correct…
Chemistry · D and F Block Elements · MCQ
Q6.Compound(s) which will liberate carbon dioxide with sodium bicarbonate solution is/are : Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q7.Identify A and B in the chemical reaction. Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q8.Which of the glycosidic linkage between galactose and glucose is present in lactose?
Chemistry · Biomolecules · MCQ
Q9.According to molecular orbital theory, the species among the following that does not exist is :
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q10.Complete combustion of 1.80 g of an oxygen containing compound ( $C_{x} H_{y} O_{z}$ ) gave 2.64 g of $C O_{2}$ and 1.08 g of $H_{2} O$ . The percentage of oxygen in the organic compound is :
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q11.The hybridization and magnetic nature of $[M n (C N)_{6}]^{4 -}$ and $[F e (C N)_{6}]^{3 -}$ , respectively are :
Chemistry · Coordination Compounds · MCQ
Q12.The major product of the following chemical reaction is : Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q13.In which of the following pairs, the outer most electronic configuration will be the same?
Chemistry · D and F Block Elements · MCQ
Q14.Which of the following reaction/s will not give p-aminoazobenzene? Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q15.Using the provided information in the following paper chromatogram : Fig : Paper chromatography for compounds A and B. the calculated Rf value of A $\times$ 10-1. Includes diagram
Chemistry · Basics of Organic Chemistry · Numerical
Q16.The reaction of cyanamide, $N H_{2} C N$ (s) with oxygen was run in a bomb calorimeter and $Δ$ U was found to be $-$ 742.24 kJ mol $-$ 1. The magnitude of $Δ$ H298 for the reaction $N H_{2} C H_{(S)} + \frac{3}{2} O_{2 (g)} \to N_{2 (g)} + O_{2 (g)} + H_{2} O_{(I)}$ …
Chemistry · Thermodynamics · Numerical
Q17.The ionization enthalpy of $N a^{+}$ formation from $N a$ (g) is 495.8 kJ mol $-$ 1, while the electron gain enthalpy of $B r$ is $-$ 325.0 kJ mol $-$ 1. Given the lattice enthalpy of $N a B r$ is $-$ 728.4 kJ mol $-$ 1. The energy for the…
Chemistry · Thermodynamics · Numerical
Q18.0.4 g mixture of $N a O H$ , $N a_{2} C O_{3}$ and some inert impurities was first titrated with $\frac{N}{10}$ $H C l$ using phenolphthalein as an indicator, 17.5 mL of $H C l$ was required at the end point. After this methyl orange was added and…
Chemistry · Redox Reactions · Numerical
Q19.In basic medium $C r O_{4}^{2 -}$ oxidises $S_{2} O_{3}^{2 -}$ to form $S O_{4}^{2 -}$ and itself changes into $C r (O H)_{4}^{-}$ . The volume of 0.154 M $C r O_{4}^{2 -}$ required to react with 40 mL of 0.25 M $S_{2} O_{3}^{2 -}$ is …
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q20.Consider the following chemical reaction. The number of sp2 hybridized carbon atom(s) present in the product is . Includes diagram
Chemistry · Hydrocarbons · Numerical
Q21.1 molal aqueous solution of an electrolyte $A_{2} B_{3}$ is 60% ionised. The boiling point of the solution at 1 atm is K. (Rounded off to the nearest integer) [Given Kb for ( $H_{2} O$ ) = 0.52 K kg mol $-$ 1]
Chemistry · Solutions · Numerical
Q22.Among the following, the number of halide(s) which is/are inert to hydrolysis is . (A) $B F_{3}$ (B) $S i C l_{4}$ (C) $P C l_{5}$ (D) $S F_{6}$
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q23.For the reaction, aA + bB $\to$ cC + dD, the plot of log k vs $\frac{1}{T}$ is given below : The temperature at which the rate constant of the reaction is 10-4 s-1 is K. (Rounded off to the nearest integer)… Includes diagram
Chemistry · Chemical Kinetics and Nuclear Chemistry · Numerical