List of top Chemistry Questions asked in JEE Main

The radius of the largest sphere which fits properly at the centre of the edge of body centred cubic unit cell is : (Edge length is represented by 'a') :

Peptization is a :

The metal that forms nitride by reacting directly with $N_2$ of air, is :

The size of the iso-electronic species $Cl^-, Ar$ and $ {Ca^{2+}}$ is affected by -

The IUPAC name of the following compound is :

An aromatic compound $'A'$ having molecular formula ${C7H6O2}$ on treating with aqueous ammonia and heating forms compound $'B'$. The compound $'B'$ on reaction with molecular bromine and potassium hydroxide provides compound $'C'$ having molecular formula ${C_6H_7N}$. The structure of $'A'$ is :

The amorphous form of silica is :

For the following reactions, equilibrium constants are given : $S\left(s\right)+O_{2}\left(g\right) $${\rightleftharpoons}$$SO_{2}\left(g\right); K_{1} =10^{52}$ $2S\left(s\right)+3O_{2}\left(g\right) $${\rightleftharpoons}$$2SO_{3}\left(g\right); K_{2} = 10^{129}$ The eqilibrium constant for the reaction, $2SO_{2}\left(g\right)+O_{2}\left(g\right)$${\rightleftharpoons}$$2SO_{3}\left(g\right)$ is :

Glucose and Galactose are having identical configuration in all the positions except position.

Which of the following compounds will show the maximum enol content?

The correct sequence of thermal stability of the following carbonates is

The complex that has highest crystal feild splitting energy $(\Delta )$, is :

If the standard electrode potential for a cell is 2 V at 300 K, the equilibrium constant (K) for the reaction ${Zn(s) + cu^{2+} (aq) <=> Zn^{2+} (aq) + Cu(s)}$ at 300 K is approximately. ${(R = 8 \; JK^{-1} \; mol^{-1} , F = 96000 \; C \; mol^{-1})}$

Hinsberg's reagent is :

Which is the most suitable reagent for the following transformation ?

The process with negative entropy change is :

The oxoacid of sulphur that does not contain bond between sulphur atoms is :

Wilkinson catalyst is :

The IUPAC name of the following compound is:

Homoleptic octahedral complexes of a metal ion '${M^{3+} }$' with three monodentate ligands and $L_1, L_2, L_3$ absorb wavelengths in the region of green, blue and red respectively. The increasing order of the ligand strength is :

Poly-$\beta$-hydroxybutyrate-co-$\beta$ hydroxyvalerate (PHBV) is a copolymer of___.

For diatomic ideal gas in a closed system, which of the following plots does not correctly describe the relation between various thermodynamic quantities ?

The number of bridging $CO$ ligand (s) and $Co - Co$ bond (s) in $ {CO_2(CO)_8}$, respectively are :

The Mond process is used for the

Two solids dissociate as follows $ {A(s) <=> B(g) + C(g) ; K_{p_1} = x \; atm^2}$ $ {D(s) <=> C(g) + E(g) ; K_{p_2} = y \; atm^2}$ The total pressure when both the solids dissociate simultaneously is :