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 :
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:
bromine in carbon tetrachloride gives:
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4Biomolecules
The peptide that gives positive ceric
ammonium nitrate and carbylamine tests is :
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 :
halides, because it has :
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6Chemical Bonding And Molecular Structure
Among the following species, the diamagnetic
molecule is
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.
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:
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...
(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 :
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 :
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?
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 :
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...
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?
diagrams represents the SN1 reaction?
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18Hydrocarbons
Increasing order of reactivity of the following
compounds for SN1 substitution is:
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?
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.
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.
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
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 :
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?
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)
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)
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)
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 :
is 10kJ and 2kJ escaped to the surroundings as
heat. The change in internal energy, \(\Delta\)U(inkJ)
is :
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