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Chemistry · 2021 · 1 Sep · Shift 2

23 questions from this JEE Main paper

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2021 · 1 Sep · Shift 2
Chemistry

Chemistry · 2021 · 1 Sep · Shift 2

23 questions from this JEE Main paper

Aldehydes Ketones and Carboxylic Acids3 questions Chemical Kinetics and Nuclear Chemistry1 questions Compounds Containing Nitrogen2 questions Coordination Compounds3 questions Basics of Organic Chemistry1 questions D and F Block Elements2 questions Hydrocarbons1 questions Haloalkanes and Haloarenes1 questions Chemical Bonding and Molecular Structure2 questions Ionic Equilibrium1 questions Thermodynamics1 questions Some Basic Concepts of Chemistry2 questions Structure of Atom1 questions Electrochemistry1 questions Biomolecules1 questions

Q1.Experimentally reducing a functional group cannot be done by which one of the following reagents?
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q2.Which one of the following given graphs represents the variation of rate constant (k) with temperature (T) for an endothermic reaction?
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q3.Identify A in the following reaction. Includes diagram
Chemistry · Compounds Containing Nitrogen · MCQ
Q4.In the following sequence of reactions a compound A, (molecular formula $C_{6} H_{12} O_{2}$ ) with a straight chain structure gives a $C_{4}$ carboxylic acid. A is : Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q5.The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (Mz+) are $-$ 0.8 $Δ$ 0 and 3.87 BM, respectively. Identify (Mz+) :
Chemistry · Coordination Compounds · MCQ
Q6.Which one of the following compounds is aromatic in nature?
Chemistry · Basics of Organic Chemistry · Multiple correct
Q7.In the given chemical reaction, colors of the $F e^{2 +}$ and $F e^{3 +}$ ions, are respectively : 5 $F e^{2 +}$ + MnO $_{4}^{-}$ + 8H+ $\to$ $M n^{2 +}$ + 4 $H_{2} O$ + 5 $F e^{3 +}$
Chemistry · D and F Block Elements · MCQ
Q8.The stereoisomers that are formed by electrophilic addition of bromine to trans-but-2-ene is/are :
Chemistry · Hydrocarbons · MCQ
Q9.In the following sequence of reactions, The compounds B and C respectively are :- Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q10.Given below are two statements : Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion. Statement II : The nucleophilic addition of hydrogen cyanide to…
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q11.Which one of the following gives the most stable Diazonium salt?
Chemistry · Compounds Containing Nitrogen · MCQ
Q12.The potassium ferrocyanide solution gives a Prussian blue colour, when added to :
Chemistry · Coordination Compounds · MCQ
Q13.Number of paramagnetic oxides among the following given oxides is . $L i_{2} O$ , $C a O$ , $N a_{2} O_{2}$ , $K O_{2}$ , $M g O$ and $K_{2} O$
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q14.Identify the element for which electronic configuration in +3 oxidation state is [Ar] $3 d_{5}$ :
Chemistry · D and F Block Elements · MCQ
Q15.The molar solubility of $Z n (O H)_{2}$ in 0.1 M $N a O H$ solution is x $\times$ 10 $-$ 18 M. The value of x is (Nearest integer) (Given : The solubility product of $Z n (O H)_{2}$ is 2 $\times$ 10 $-$ 20)
Chemistry · Ionic Equilibrium · Numerical
Q16.For the reaction, 2 $N O_{2}$ (g) $⇌$ $N_{2} O_{4}$ (g), when $Δ$ S = $-$ 176.0 JK $-$ 1 and $Δ$ H = $-$ 57.8 kJ mol $-$ 1, the magnitude of $Δ$ G at 298 K for the reaction is kJ mol $-$ 1.…
Chemistry · Thermodynamics · Numerical
Q17.The sum of oxidation states of two silver ions in $[A g (N H_{3})_{2}]$ $[A g (C N)_{2}]$ complex is .
Chemistry · Coordination Compounds · Numerical
Q18.The number of atoms in 8g of sodium is x $\times$ 1023. The value of x is . (Nearest integer) [Given : NA = 6.02 $\times$ 1023 mol $-$ 1 Atomic mass of Na = 23.0 u]
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q19.If 80 g of copper sulphate $C u S O_{4}$ . 5 $H_{2} O$ is dissolved in deionised water to make 5L of solution. The concentration of the copper sulphate solution is x $\times$ 10 $-$ 3 mol L $-$ 1. The value of x is .…
Chemistry · Some Basic Concepts of Chemistry · Numerical
Q20.A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x $\times$ 1020. The value of x is . [Given : h = 6.63 $\times$ 10 $-$ 34 Js and c =…
Chemistry · Structure of Atom · Numerical
Q21.The spin-only magnetic moment value of $B_{2}^{+}$ species is $\times$ 10 $-$ 2 BM. (Nearest integer) [Given : $3$ = 1.73]
Chemistry · Chemical Bonding and Molecular Structure · Numerical
Q22.If the conductivity of mercury at 0 $^{\circ}$ C is 1.07 $\times$ 106 S m $-$ 1 and the resistance of a cell containing mercury is 0.243 $Ω$ , then the cell constant of the cell is x $\times$ 104 m $-$ 1. The value of x is …
Chemistry · Electrochemistry · Numerical
Q23.A peptide synthesized by the reactions of one molecule each of Glycine, Leucine, Aspartic acid and Histidine will have peptide linkages.
Chemistry · Biomolecules · Numerical