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JEE Main
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Chemistry
List of top Chemistry Questions asked in JEE Main
Match List - I with List - II
Choose the correct answer from the options given below :
JEE Main - 2024
JEE Main
Chemistry
Coordination chemistry
Given below are two statements:
Statement (I): \( \text{SiO}_2 \) and \( \text{GeO}_2 \) are acidic while \( \text{SnO} \) and \( \text{PbO} \) are amphoteric in nature.
Statement (II): Allotropic forms of carbon are due to property of catenation and \( p\pi-d\pi \) bond formation.
In the light of the above statements, choose the most appropriate answer from the options given below:
JEE Main - 2024
JEE Main
Chemistry
Periodic properties
The number of radial node/s for 3p orbital is:
JEE Main - 2024
JEE Main
Chemistry
Atomic Structure
\([ \text{Co(NH}_3)_6 ]^{3+}\) and \([ \text{CoF}_6 ]^{3-}\) are respectively known as:
JEE Main - 2024
JEE Main
Chemistry
Coordination chemistry
Number of compounds which give reaction with Hinsberg's reagent is_______.
JEE Main - 2024
JEE Main
Chemistry
Amines
Given below are two statements :
Statement (I) : Dimethyl glyoxime forms a six-membered covalent chelate when treated with NiCl2 solution in presence of NH4OH.
Statement (II) : Prussian blue precipitate contains iron both in (+2) and (+3) oxidation states. In the light of the above statements,
choose the most appropriate answer from the options given below:
JEE Main - 2024
JEE Main
Chemistry
Coordination chemistry
The amount of electricity in Coulomb required for the oxidation of 1 mol of \( \text{H}_2\text{O} \) to \( \text{O}_2 \) is \[\_ \times 10^5 \, \text{C}.\]
JEE Main - 2024
JEE Main
Chemistry
Electrochemistry
The following data were obtained during the first order thermal decomposition of a gas A at constant volume:\[\text{A(g)} \rightarrow 2\text{B(g)} + \text{C(g)}\]\[\begin{array}{|c|c|c|}\hline\text{S.No} & \text{Time/s} & \text{Total pressure/(atm)} \\\hline1 & 0 & 0.1 \\2 & 115 & 0.28 \\\hline\end{array}\]The rate constant of the reaction is _____ $\times 10^{-2}$ s$^{-1}$ (nearest integer).
JEE Main - 2024
JEE Main
Chemistry
Chemical Kinetics
Solubility of calcium phosphate (molecular mass, \( M \)) in water is \( W_g \) per 100 mL at \( 25^\circ C \). Its solubility product at \( 25^\circ C \) will be approximately:
JEE Main - 2024
JEE Main
Chemistry
Ionic Equilibrium In Solution
Which among the following has highest boiling point?
JEE Main - 2024
JEE Main
Chemistry
Alcohols, Phenols and Ethers
The incorrect statement about Glucose is :
JEE Main - 2024
JEE Main
Chemistry
Biomolecules
An artificial cell is made by encapsulating \(0.2 \, \text{M}\) glucose solution within a semipermeable membrane. The osmotic pressure developed when the artificial cell is placed within a \(0.05 \, \text{M}\) solution of NaCl at 300 K is ______ \( \times 10^{-1} \, \text{bar} \). (Nearest Integer)
Given:
\(R = 0.083 \, \text{L bar mol}^{-1} \text{K}^{-1}\)
Assume complete dissociation of NaCl.
JEE Main - 2024
JEE Main
Chemistry
Colligative Properties
The ratio of \(\frac{{^{14}\text{C}}}{{^{12}\text{C}}}\) in a piece of wood is \(\frac{1}{8}\) part that of atmosphere. If the half-life of \(^{14}\text{C}\) is 5730 years, the age of the wood sample is _______ years.
JEE Main - 2024
JEE Main
Chemistry
Nuclear Chemistry
Calculate the Molarity of a Solution having density =
\(1.5\)
\(g/ml\)
.
\(\%(w/w)\)
of Solute is
\(36\%\)
and Molecular weight of Solute is
\(36\)
\(g/mol\)
JEE Main - 2024
JEE Main
Chemistry
Mole concept and Molar Masses
Match List I with List II
List-I
List-II
A. Melting point [K]
I. Tl > In > Ga > Al > B
B. Ionic Radius [M
3
/pm]
II. B > Tl > Al ≈ Ga ≈ In
C. Δ
i
H
1
[kJ mol
-1
]
III. Tl > In > Al > Ga > B
D. Atomic Radius [pm]
IV. B > Al > Tl > In > Ga
Choose the correct answer from the options given below:
JEE Main - 2024
JEE Main
Chemistry
Periodic properties
Consider the following reaction:\[3\text{PbCl}_2 + 2(\text{NH}_4)_3\text{PO}_4 \rightarrow \text{Pb}_3(\text{PO}_4)_2 + 6\text{NH}_4\text{Cl}\]If 72 mmol of PbCl\(_2\) is mixed with 50 mmol of (\(\text{NH}_4\))\(_3\)PO\(_4\), then the amount of \(\text{Pb}_3(\text{PO}_4)_2\) formed is ______ mmol (nearest integer).
JEE Main - 2024
JEE Main
Chemistry
Stoichiometry and Stoichiometric Calculations
In the lewis dot structure for \(NO^{-}_{2}\), total number of valence electrons around nitrogen is .......
JEE Main - 2024
JEE Main
Chemistry
Chemical bonding and molecular structure
In a borax bead test under hot condition, a metal salt (one from the given) is heated at point B of the flame, resulted in green colour salt bead. The spin-only magnetic moment value of the salt is ............. BM (Nearest integer)
[Given atomic number of Cu = 29, Ni = 28,Mn = 25, Fe = 26]
JEE Main - 2024
JEE Main
Chemistry
Qualitative Analysis
Given below are two statements :
Statement I : The higher oxidation states are more stable down the group among transition elements unlike p-block elements.
Statement II : Copper can not liberate hydrogen from weak acids.
In the light of the above statements, choose the correct answer from the options given below
JEE Main - 2024
JEE Main
Chemistry
Oxidation Number And Oxidation States
The metals that are employed in the battery industries are
A. Fe
B. Mn
C. Ni
D. Cr
E. Cd
Choose the correct answer from the options given below:
JEE Main - 2024
JEE Main
Chemistry
Electrochemistry
According to IUPAC system, the compound
JEE Main - 2024
JEE Main
Chemistry
Nomenclature Of Organic Compounds
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A): SN$_2$ reaction of C$_6$H$_5$CH$_2$Br occurs more readily than the SN$_2$ reaction of CH$_3$CH$_2$Br.
Reason (R): The partially bonded unhybridized p-orbital that develops in the trigonal bipyramidal transition state is stabilized by conjugation with the phenyl ring.
In the light of the above statements, choose the most appropriate answer from the options given below:
JEE Main - 2024
JEE Main
Chemistry
Reaction Mechanisms & Synthesis
Number of compounds from the following which cannot undergo Friedel-Crafts reactions is :____
toluene, nitrobenzene, xylene, cumene, aniline, chlorobenzene, m-nitroaniline, m-dinitrobenzene
JEE Main - 2024
JEE Main
Chemistry
Organic Chemistry
In the given TLC, the distance of spot \( A \) and \( B \) are 5 cm and 7 cm, from the bottom of the TLC plate, respectively. The \( R_f \) value of \( B \) is \( x \times 10^{-1} \) times more than \( A \). The value of \( x \) is _________ .
JEE Main - 2024
JEE Main
Chemistry
Surface Chemistry
Number of moles of
\(H^+\)
required by
\(1\)
mole
\(MnO_4^-\)
to oxidize oxalate ion to
\(CO_2\)
is ____ .
JEE Main - 2024
JEE Main
Chemistry
Mole concept and Molar Masses
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