List of top Chemistry Questions asked in JEE Main

The total number of octahedral void(s) per atom present in a cubic close packec structure is :-

Dissolving $120 \,g$ of a compound of (mol. wt. $60$) in $1000 \,g$ of water gave a solution of density $1.12 \,g/mL$. The molarity of the solution is :

Similarity in chemical properties of the atoms of elements in a group of the Periodic table is most closely related to :

Which series of reactions correctly represents chemical relations related to iron and its compound?

Among the following oxoacids, the correct decreasing order of acidic strength is

Which of the following statements about $Na_2O_2$ is not correct?

For the reaction, 3A + 2B $\to$ C + D, the differential rate law can be written as :

The correct order of bond dissociation energy among $N_2, O_2, O_2^-$ is shown in which of the following arrangements ?

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is

For the reaction, $ SO_2 ( g) + \frac{1}{2} O_2 \, ( g) \rightleftharpoons SO_3 \, ( g) $ if $ K_P = K_C \, ( RT)^x $ X where, the symbols have usual meaning, then the value of x is (assuming ideality)

The octahedral complex of a metal ion $M^{3+} $ with four monodentate ligands $L_1,L_2,L_3 \, and \, L_4 $ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is

In a monoclinic unit cell, the relation of sides and angles are respectively :

Which of the following series correctly represents relations between the elements from X to Y?
\(X\to Y\)

In a face centered cubic lattice atoms $A$ are at the corner points and atoms $B$ at the face centered points. If atom $B$ is missing from one of the face centered points, the formula of the ionic compound is :

Which one of the following has largest ionic radius?

The amount of oxygen in $3.6$ moles of water is :

Aminoglycosides are usually used as :

The conjugate base of hydrazoic acid is :

The appearance of colour in solid alkali metal halides is generally due to :

The ratio mass of oxygen and nitrogen of a particular gaseous mixture is $1 : 4$ The ratio of number of their molecule is

$CsCl$ crystallises in body centred cubic lattice. If 'a' is its edge length, then which of the following expressions is correct?

The rate coefficient $(k)$ for a particular reactions is $1.3 \times 10^{-4}\, M^{-1}\, s^{-1}$ at $100^{\circ}C$, and $1.3 \times 10^{-3}\,M^{-1}s^{-1}$ at $150^{\circ}C$ What is the energy of activation $(E_{a})$ (in $kJ$) for this reaction ? ($R =$ molar gas constant $= 8.314 \,JK^{-1}\,mol^{-1})$

In which of the following exothermic reactions, the heat liberated per mole is the highest ?

Arrange in the correct order of stability (decreasing order) for the following molecules :

\(12\, g\) of a nonvolatile solute dissolved in \(108\, g\) of water produces the relative lowering of vapor pressure of \(0.1.\)The molecular mass of the solute is :