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JEE Main 2019 (Online) 9th April Evening Slot

JEE Main / 30 questions

2026Tue, Apr 9, 2019 9:30 AM30 PYQs
1Aldehydes Ketones And Carboxylic Acids
In the following reaction

Rate of the reaction is the highest for :
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2Aldehydes Ketones And Carboxylic Acids
The major product of the following reaction is:
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3Aldehydes Ketones And Carboxylic Acids
p-Hydroxybenzophenone upon reaction with
bromine in carbon tetrachloride gives:
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4Biomolecules
The peptide that gives positive ceric
ammonium nitrate and carbylamine tests is :
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5Chemical Bonding And Molecular Structure
HF has highest boiling point among hydrogen
halides, because it has :
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6Chemical Bonding And Molecular Structure
Among the following species, the diamagnetic
molecule is
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7Chemical Kinetics And Nuclear Chemistry
Consider the given plot of enthalpy of the
following reaction between A and B.
A+ B \(\to\) C + D
Identify the incorrect statement.
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8Chemistry In Everyday Life
Noradrenaline is a/an
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9Compounds Containing Nitrogen
Hinsberg's reagent is :
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10Compounds Containing Nitrogen
The major products A and B for the following
reactions are, respectively:
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11Coordination Compounds
The correct statements among I to III are :
(I) Valence bond theory cannot explain the
color exhibited by transition metal
complexes.
(II) Valence bond theory can predict
quantitatively the magnetic properties of
transtition metal complexes...
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12Coordination Compounds
The maximum possible denticities of a ligand
given below towards a common transition and
inner-transition metal ion, respectively, are :
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13D And F Block Elements
The maximum number of possible oxidation
states of actinoides are shown by :
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14Electrochemistry
A solution of Ni(NO3)2 is electrolysed between
platinum electrodes using 0.1 Faraday
electricity. How many mole of Ni will be
deposited at the cathode?
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15Environmental Chemistry
The layer of atmosphere between 10 km to
50 km above the sea level is called as :
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16Gaseous State
At a given temperature T, gases Ne, Ar, Xe and
Kr are found to deviate from ideal gas
behaviour. Their equation of state is given as
\(p = {{RT} \over {V - b}}\) at T.
Here, b is the van der Waals constant. Which
gas will exhibit steepest i...
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17Hydrocarbons
Which of the following potential energy (PE)
diagrams represents the SN1 reaction?
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18Hydrocarbons
Increasing order of reactivity of the following
compounds for SN1 substitution is:
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19Ionic Equilibrium
In an acid-base titration, 0.1 M HCl solution
was added to the NaOH solution of unknown
strength. Which of the following correctly
shows the change of pH of the titraction
mixture in this experiment?
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20Isolation Of Elements
Assertion: For the extraction of iron, haematite
ore is used.
Reason: Haematite is a carbonate ore of iron.
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21Isolation Of Elements
The one that is not a carbonate ore is :
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22P Block Elements
The correct statements among I to III regarding
group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminium and gallium are
amphoteric.
(III) Oxides of indium and thalliumare basic.
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23P Block Elements
The amorphous form of silica is :
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24Polymers
Which of the following compounds is a
constituent of the polymer
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25S Block Elements
The structures of beryllium chloride in the solid
state and vapour, phase, respectively,are :
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26Solid State
10 mL of 1mM surfactant solution forms a
monolayer covering 0.24 cm2 on a polar
substrate. If the polar head is approximated as
cube, what is its edge length?
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27Solutions
Molal depression constant for a solvent is
4.0 kg mol–1. The depression in the freezing
point of the solvent for 0.03 mol kg–1 solution
of K2SO4 is :
(Assume complete dissociation of the
electrolyte)
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28Some Basic Concepts Of Chemistry
What would be the molality of 20% (mass/
mass) aqueous solution of KI?
(molar mass of KI = 166 g mol–1)
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29Structure Of Atom
Which one of the following about an electron
occupying the 1s orbital in a hydrogen atom is
incorrect ? (The Bohr radius is represented
by a0)
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30Thermodynamics
During compression of a spring the work done
is 10kJ and 2kJ escaped to the surroundings as
heat. The change in internal energy, \(\Delta\)U(inkJ)
is :
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