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JEE Main
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Chemistry
List of top Chemistry Questions asked in JEE Main
A' formed in the above reaction is
JEE Main - 2023
JEE Main
Chemistry
Chemical Reactions
The complex with highest magnitude of crystal field splitting energy (Δ0) is
JEE Main - 2023
JEE Main
Chemistry
Classification Of Organic Compounds
Number of P-O-P bonds in H
3
PO
4
, P
4
O
10
, (HPO
3
)
3
JEE Main - 2023
JEE Main
Chemistry
p -Block Elements
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion (A): B
e
Cl
2
and MgCl
2
produce characteristic flame.
Reason (R) : The excitation energy is high in B
e
Cl
2
and MgCl
2
In the light of the above statements, choose the correct answer from the option given below
JEE Main - 2023
JEE Main
Chemistry
internal energy
During water-gas shift reaction
JEE Main - 2023
JEE Main
Chemistry
Chemical Reactions
Which of the following statement (s) is (are) correct?
(a) The pH of 1 .0 x 10-8M solution of HCl is 8
(b) The conjugate base of H2PO-4 is HPOI2-4
(c) Autoprotolysis constant of water increases with temperature
(d) When a solution of a weak monoprotic acid is treated against a strong base, at half - neutralisation point pH = (
\(\frac{1}{2}\)
)pK
a
.
Choose the correct answer from the the options given below
JEE Main - 2023
JEE Main
Chemistry
Solutions
Consider the following statements:
(A) NF3 molecule has a trigonal planar structure.
(B) Bond length of N2 is shorter than O2.
(C) Isoelectronic molecules or ions have identical bond order.
(D) Dipole moment of H2S is higher than that of water molecule.
Choose the correct answer from the option below
JEE Main - 2023
JEE Main
Chemistry
Structure of atom
Which of the following expressions is correct in case of a C
S
Cl unit cell (edge length, a) ?
JEE Main - 2023
JEE Main
Chemistry
Unit Cells
In potassium ferrocyanide, there are ____ pairs of electrons in the
\(t_{2g}\)
set of orbitals.
JEE Main - 2023
JEE Main
Chemistry
Molecular Orbital Theory
A molecule undergoes two independent first order reactions whose respective half lives are 12 min and 3 min. If both the reactions are occurring then the time taken for the 50% consumption of the reactant is _____ min. (Nearest integer)
JEE Main - 2023
JEE Main
Chemistry
Order of Reaction
\(FeO^{2-}_4+\underrightarrow{2.2v}\;Fe^{3+}\underrightarrow{+0.70v}\;Fe^{2+}\underrightarrow{-0.45v}\;Fe^0\)
\(E^0_{FeO_4^{2+}}\; is \;x × 10^{-3} V\)
. The Value of
\(x\)
is __
JEE Main - 2023
JEE Main
Chemistry
Law Of Chemical Equilibrium And Equilibrium Constant
The number of correct statement/s involving equilibria in physical process from the following is
(A) Equilibrium is possible only in a closed system at a given temperature
(B) Both the opposing processes occur at the same rate.
(C) When equilibrium is attained at a given temperature, the value of all its parameters became equal
(D) For dissolution of solids in liquids, the solubility is constant at a given temperature
JEE Main - 2023
JEE Main
Chemistry
Law Of Chemical Equilibrium And Equilibrium Constant
The degree of dissociation of monobasic acid is 0 3 By what percent is the observed depression in freezing point greater than the calculated depression in freezing point ?
JEE Main - 2023
JEE Main
Chemistry
Laws of thermodynamics
The number of incorrect statement/s about the black body from the following is _______
(A) Emit or absorb energy in the form of electromagnetic radiation
(B) Frequency distribution of the emitted radiation depends on temperature
(C) At a given temperature, intensity vs frequency curve passes through a maximum value
(D) The maximum of the intensity vs frequency curve is at a higher frequency at higher temperature compared to that at lower temperature
JEE Main - 2023
JEE Main
Chemistry
Gibbs Free Energy
Match List I with List II
List-I
Polymer
List-II
Type/ Class
(A)
Nylon-2-Nylon-6
(I)
Thermosetting polymer
(B)
Buna-N
(II)
Biodegradable polymer
(C)
Urea-formaldehyde
(III)
Synthetic rubber resin
(D)
Dacron
(IV)
Polyester
Choose the correct answer from the options given below:
JEE Main - 2023
JEE Main
Chemistry
Polymers
Isomeric amines with molecular formula C
8
H
11
N give the following tests
Isomer (P) ⇒ Can be prepared by Gabriel phthalimide synthesis
Isomer (Q) ⇒ Reacts with Hinsberg’s reagent to give solid insoluble in NaOH
Isomer (R) ⇒ Reacts with HONO followed by β-naphthol in NaOH to give red dye.
Isomers (P), (Q) and (R) respectively are
JEE Main - 2023
JEE Main
Chemistry
Stereoisomers
Suitable reaction condition for preparation of Methyl phenyl ether is
JEE Main - 2023
JEE Main
Chemistry
Classification Of Organic Compounds
The major product ‘P’ formed in the given reaction is
JEE Main - 2023
JEE Main
Chemistry
Law Of Chemical Equilibrium And Equilibrium Constant
The pair of compounds from the following pairs having both the compounds with net non-zero dipole moment is
JEE Main - 2023
JEE Main
Chemistry
Classification Of Organic Compounds
Using column chromatography, mixture of two compounds ‘A’ and ‘B’ was separated. ‘A’ eluted first, this indicates ‘B’ has
JEE Main - 2023
JEE Main
Chemistry
Classification Of Organic Compounds
Match the following List-I and List-II:
List-I
Industry
List-II
Waste Generated
(A)
Steel Plants
(I)
Gypsum
(B)
Thermal Power Plants
(II)
Fly ash
(C)
Fertilizer industries
(III)
Slag
(D)
Ppaer mills
(IV)
Bio-degradable Wastes
Choose the correct answer from the options given below:
JEE Main - 2023
JEE Main
Chemistry
Environmental Chemistry
Which of the following statements are correct?
(A) The M
3+
/M
2+
reduction potential for iron is greater than manganese
(B) The higher oxidation states of first row dblock elements get stabilized by oxide ion.
(C) Aqueous solution of Cr
2+
can liberate hydrogen from dilute acid.
(D) Magnetic moment of V
2+
is observed between 4.4-5.2 BM Choose the correct answer from the options given below:
JEE Main - 2023
JEE Main
Chemistry
Classification of elements and periodicity in properties
Given below are two reactions, involved in the commercial production of dihydrogen (H
2
). The two reactions are carried out at temperature “T
1
” and “T
2
” respectively
\(C(S)+H_2O(g)\underrightarrow {T_1}\;CO(g)+H_2(g)\)
\(CO(g)+H_2O(g)\underrightarrow{T_2}\;CO_2(g)+H_2(g)\)
The temperature
\(T_1\)
and
\(T_2\)
are correctly related as
JEE Main - 2023
JEE Main
Chemistry
Law Of Chemical Equilibrium And Equilibrium Constant
Number of molecules and moles in 2.8375 litre of O
2
at STP.
JEE Main - 2023
JEE Main
Chemistry
States of matter
At what
\(pH\)
, given half cell
\(MnO _4^{-}(01 M ) \mid Mn ^{2+}(0001 M )\)
will have electrode potential of
\(1.282\, V\)
? (Nearest Integer)
(Given:
\(E _{ MnO _{4}^-| Mn ^{2+}}^{ o }=154 \,V , \frac{2303 RT }{ F }=0059\, V\)
)
JEE Main - 2023
JEE Main
Chemistry
Galvanic Cells
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