List of top Chemistry Questions asked in JEE Main

Ba+2 cannot be precipitated as?

Which of the following is a set of essential amino acids?

$2$ g of a base whose equivalent weight is $40$ reacts with $3g$ of an acid. The equivalent weight of the acid is:

Which of the following compounds will not give Hinsberg's test

Given:
(i) ${Cu}^{2+}+2e^{-}\to Cu,E^0=0.337V$
(ii) ${Cu}^{2+}+e^{-}\to {Cu}^{+},E^0=0.153$
Standard electrode potential, $E^{\circ }$ for the reaction, $Cu+e^{-}\to Cu$, will be (in volts):

Identify the correct Lewis dot structure of NO^-₂.

Number of π bonds present in product B is:

Product B is:

Chemical formula of compound present in tooth enamel?

S-I: Sulphur exists as S8 while oxygen exists as O2.
S-II: In oxygen, pπ-pπ bonding occurs while it is not effective in sulphur.

One litre solution of 0.2 M glucose is separated with its pure solvent with semi-permeable membrane, 0.1 moles of NaCl is added to the solution. The change in osmotic pressure of solution will be at 300 K _____ . (take R = 0.083)

Which of the following statements is incorrect?

Which among the following have a single unpaired electron?
N₂, 0₂, CN^-, O₂^-, C₂^2- , N^2-

An aromatic compound 'A' C7H6Cl2  gives white precipitate on boiling with AgNO3 solution and yields C7H7OCl on treatment with NaOH.  'A' on oxidation gives a monochloro benzoic acid which affords only one mononitroderivative.  The compound A is:

The number of bridging \(CO\) ligands and \(Co-Co\) bonds in \(Co_2(CO)_8\), respectively are:

Consider the following reaction: The product is

The correct order of atomic radii is:

At equilibrium the concentrations of ${\mathrm{N}}_2=3.0\times {10}^{-3}\mathrm{M},{\mathrm{O}}_2=4.2\times {10}^{-3}\mathrm{M}$ and $\mathrm{NO}=2.8\times {10}^{-3}\mathrm{M}$ in a sealed vessel at $800\mathrm{K}$. What will be ${\mathrm{K}}_{\mathrm{C}}$ for the reaction ${\mathrm{N}}_{2(\mathrm{g})}+{\mathrm{O}}_{2(\mathrm{g})}\leftrightharpoons 2{\mathrm{NO}}_{(\mathrm{g})}?$

If $K_{sp}$ of ${Ag}_2{CO}_3$ is $8\times {10}^{-12},$ the molar solubility of ${Ag}_2{CO}_3$ in $0.1MAgN{O}_3$ is:

Which of the following are amongst the few carbon-containing compounds NOT classified as organic?

For a certain reaction, ΔH_r is 400 kJ/mol and ΔS=0.2 kJ/mol K. Above what minimum temperature in Kelvin, the reaction becomes spontaneous.

The molarity of NaCl solution is 3 M. Calculate the morality of the solution. (Given density of the solution = 1.25 g/mL)

Choose the correct statement(s):
A Beryllium oxide is purely acidic in nature
B Beryllium carbonate is kept in the atmosphere of $CO _2$
C Beryllium sulphate is readily soluble in water
D Beryllium shows anomalous behavior
Choose the correct answer from the options given below:

Which of the following is a functional isomer of Dimethyl ether?