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JEE Main
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Chemistry
List of top Chemistry Questions asked in JEE Main
The set of meta directing functional groups from the following sets is:
JEE Main - 2024
JEE Main
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
The functional group that shows negative resonance effect is:
JEE Main - 2024
JEE Main
Chemistry
Resonance
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
Following Kjeldahl's method, 1g of organic compound released ammonia that neutralized 10 mL of 2M H\(_2\)SO\(_4\). The percentage of nitrogen in the compound is _________.%.
JEE Main - 2024
JEE Main
Chemistry
Some basic concepts of chemistry
For a certain reaction at 300 K, \( K = 10 \), then \( \Delta G^\circ \) for the same reaction is \[- \, \_ \times 10^{-1} \, \text{kJ mol}^{-1}.\](Given \( R = 8.314 \, \text{JK}^{-1} \text{mol}^{-1} \))
JEE Main - 2024
JEE Main
Chemistry
Thermodynamics
The number of tripeptides formed by three different amino acids using each amino acid once is ______.
JEE Main - 2024
JEE Main
Chemistry
Biomolecules
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
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
Select the compound from the following that will show intramolecular hydrogen bonding.
JEE Main - 2024
JEE Main
Chemistry
Hydrogen Bonding
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
Acid D formed in above reaction is :
JEE Main - 2024
JEE Main
Chemistry
Organic Reactions
Match List - I with List - II
Choose the correct answer from the options given below :
JEE Main - 2024
JEE Main
Chemistry
Coordination chemistry
The strongest reducing agent amont the following is:
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
Which of the following compounds show colour due to d-d transition?
JEE Main - 2024
JEE Main
Chemistry
coordination compounds
Total number of isomeric compounds (including stereoisomers) formed by monochlorination of 2-methylbutane is________.
JEE Main - 2024
JEE Main
Chemistry
Hydrocarbons
\([ \text{Co(NH}_3)_6 ]^{3+}\) and \([ \text{CoF}_6 ]^{3-}\) are respectively known as:
JEE Main - 2024
JEE Main
Chemistry
Coordination chemistry
Which among the following has highest boiling point?
JEE Main - 2024
JEE Main
Chemistry
Alcohols, Phenols and Ethers
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
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