List of top Chemistry Questions

In the reaction, $8 Al +3 Fe _{3} O _{4} \longrightarrow 4 Al _{2} O _{3}+9 Fe$ the number of electrons transferred from the reductant to the oxidant is
Peptisation involves
Which of the following has an ester linkage?
A metal has bcc structure and the edge length of its unit cell is $3.04\, ?$. The volume of the unit cell in $cm^3$ will be
The correct statement for the molecule, $CsI_3$ is
Among the following organic acids, the acid present in rancid butter 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 :
For the compounds $CH_3Cl, \, CH_3Br,\,CH_3I$ and $CH_3F,$ the correct order of increasing $C$-halogen bond length is :
Considering the basic strength of amines in aqueous solution, which one has the smallest $pK_b$ value?
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)
Which one of the following acids does not exhibit optical isomerism?
$K_{c}$ for the the reaction, $\left[ Ag ( CN )_{2}\right]^{-} \rightleftharpoons Ag ^{+}+2 CN ^{-}$, the equillibrium constant at $25^{\circ} C$ is $4.0 \times 10^{-19}$, then the silver ion concentration in a solution which was originally $0.1$ molar in $KCN$ and $0.03$ molar in $AgNO _{3}$ is :
For $K_4[Fe(CN)_6]$, coordination number and oxidation state are respectively
What happens when an inert gas is added to an equilibrium keeping volume unchanged ?
If $m$ and $e$ are the mass and charge of the revolving electron in the orbit of radius $r$ for hydrogen atom, the total energy of the revolving electron will be :
The total number of octahedral void(s) per atom present in a cubic close packec structure is :-
The most suitable reagent for the conversion of $RCH_2OH \to RCHO$ is
In the Victor-Meyer's test, the colour given by $1^{\circ}$, $2^{\circ}$and $3^{\circ}$ alcohols are respectively :
The pair of compounds that can exist together is:
Magnetic moment 2.83 BM is given by which of the following ions?
(At. nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)
Of the following 0.10 m aqueous solutions, which one will exhibit the largest freezing point depression?
If a is the length of the side of a cube , the distance between the body centred atom and one corner atom in the cube will be
Among the following sets of reactants which one produces anisole ?
Calculate the energy in joule corresponding to light of wavelength 45 nm:
(Planck’s constant h = 6.63 × 10-34 Js; speed of light c = 3 × 108 ms-1)
Artificial sweetener which is stable under cold conditions only is: