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Chemistry · 2020 · 8 Jan · Shift 2

19 questions from this JEE Main paper

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2020 · 8 Jan · Shift 2
Chemistry

Chemistry · 2020 · 8 Jan · Shift 2

19 questions from this JEE Main paper

Alcohols Phenols and Ethers1 questions Periodic Table and Periodicity1 questions Aldehydes Ketones and Carboxylic Acids1 questions Chemical Kinetics and Nuclear Chemistry1 questions Basics of Organic Chemistry1 questions Hydrocarbons3 questions Coordination Compounds3 questions Thermodynamics1 questions Electrochemistry1 questions Structure of Atom2 questions Biomolecules1 questions Ionic Equilibrium1 questions Chemical Bonding and Molecular Structure1 questions P Block Elements1 questions

Q1.Among the compounds A and B with molecular formula $C_{9} H_{18} O_{3}$ , A is having higher boiling point the B. The possible structures of A and B are :
Chemistry · Alcohols Phenols and Ethers · MCQ
Q2.The increasing order of the atomic radii of the following elements is :- (a) C (b) O (c) F (d) Cl (e) Br
Chemistry · Periodic Table and Periodicity · MCQ
Q3.An unsaturated hydrocarbon X absorbs two hydrogen molecules on catalytic hydrogenation and also gives following reaction : B(3 - oxo - hexanedicarboxylic acid) X will be :- Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q4.Consider the following plots of rate constant versus $\frac{1}{T}$ for four different reactions. Which of the following orders is correct for the activation energies of these reactions? Includes diagram
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q5.Kjeldahl's method cannot be used to estimate nitrogen for which of the following compounds?
Chemistry · Basics of Organic Chemistry · MCQ
Q6.The major product [B] in the following sequence of reactions is :- Includes diagram
Chemistry · Hydrocarbons · MCQ
Q7.Complexes ( $M L_{5}$ ) of metals Ni and Fe have ideal square pyramidal and trigonal bipyramidal grometries, respectively. The sum of the 90°, 120° and 180° L-M-L angles in the two complexes is .
Chemistry · Coordination Compounds · Numerical
Q8.At constant volume, 4 mol of an ideal gas when heated from 300 K to 500K changes its internal energy by 5000 J. The molar heat capacity at constant volume is .
Chemistry · Thermodynamics · Numerical
Q9.In the following sequence of reactions the maximum number of atoms present in molecule 'C' in one plane is . (A is a lowest molecular weight alkyne) Includes diagram
Chemistry · Hydrocarbons · Numerical
Q10.For an electrochemical cell $S n$ (s) | $S n^{2 +}$ (aq,1M)|| $P b^{2 +}$ (aq,1M)| $P b$ (s) the ratio $\frac{[ S n ^{2 +} ]}{[ P b ^{2 +} ]}$ when this cell attains equilibrium is . (Given…
Chemistry · Electrochemistry · Numerical
Q11.The correct order of the calculated spin-only magnetic moments of complexs (A) to (D) is: (A) $N i (C O)_{4}$ (B) $[N i (H_{2} O)_{6}]$ $C l_{2}$ (C) $N a_{2} [N i (C N)_{4}]$ (D) $P d C l_{2} (P P h_{3})_{2}$
Chemistry · Coordination Compounds · MCQ
Q12.Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (z), the sum of (x), (y) an (z) is :
Chemistry · Structure of Atom · MCQ
Q13.Two monomers in maltose are :
Chemistry · Biomolecules · MCQ
Q14.The major product in the following reaction is: Includes diagram
Chemistry · Hydrocarbons · MCQ
Q15.Among (a) – (d) the complexes that can display geometrical isomerism are : (a) $[P t (N H_{3})_{3} C l]^{+}$ (b) $[P t (N H_{3}) C l_{5}]^{-}$ (c) $[P t (N H_{3})_{2} C l (N O_{2})]$ (d) $[P t (N H_{3})_{4} C l B r]^{2 +}$
Chemistry · Coordination Compounds · MCQ
Q16.The radius of the second Bohr orbit, in terms of the Bohr radius, a0, in $L i^{2 +}$ is :
Chemistry · Structure of Atom · MCQ
Q17.For the following Assertion and Reason, the correct option is : Assertion : The pH of water increases with increase in temperature. Reason : The dissociation of water into $H^{+}$ and $O H^{-}$ is an exothermic reaction.
Chemistry · Ionic Equilibrium · MCQ
Q18.Arrange the following bonds according to their average bond energies in descending order : C–Cl, C–Br, C–F, C–I
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q19.A metal (A) on heating in nitrogen gas gives compound B. B on treatment with $H_{2} O$ gives a colourless gas which when passed through $C u S O_{4}$ solution gives a dark blue-violet coloured solution. A and B respectively, are :
Chemistry · P Block Elements · MCQ