List of top Chemistry Questions

In zone refining method, the molten zone
$2$-acetoxy benzoic acid is
The ratio of rates of diffusion of helium and methane under same conditions of temperature and pressure will be
Which is necessary for conversion of butane-$2$-one into propanoic acid?
The number of radial nodes of $3\,s$ and $2\,p$ orbital are
Adsorption of gases on solid surface is exothermic since
A sodium salt on treatment with $ MgCl_{2}$ gives white precipitate on heating. The anion of sodium salt is
The acid having $ O-O $ bond is
In solid $CuSO_{4} \cdot 5H_{2}O$ copper is coordinated to number of water molecules
In Oppenauer's oxidation,
In an isobaric process, when temperature changes from $T_1$ to $T_2$, $\Delta S$ is equal to
If heavy water is taken as solvent instead of normal water while performing Cannizaro reaction, the products of the reaction are
The standard emf of a cell involving one electron charge is found to be $0.591\, V$ at $25^{\circ} C$. The equilibrium constant of the reaction is $\left(1\, F =96500\, C\, mol ^{-1}, R=8.314\, J\, K ^{-1} mol ^{-1}\right)$
A buffer solution is used in
The geometry of sulphate ion is
Which of the following orbital diagram violates Faults exclusion principle?
Which of the following is an aromatic compound?
In the following reaction, $C _{2} H _{5} OH + CH _{3} COOH \xrightarrow[- H _{2} O ]{\text { Conc. } H _{2} SO _{4}} CH_3COOC_2H_5 \,\,\,\, C_2H_5OH$ acts as
By which of the following processes, pure nitrogen gas is prepared?
$HCl $ molecule contains
Which represents the correct order of first ionisation potential of third period elements?
The $C-H$ bond distance is the longest in
Formula of microcosmic salt is
Formation of alcohol by oxymercuration- demercuration of alkenes
Calculate the wavelength (in nanometer) associated with a proton moving at $1.0 \times 10^3ms^{-1}$ (Mass of proton $= 1.67 \times 10^{-27}\, kg$ and $h = 6.63 \times 10^{-34}\, Js$ ) :