List of top Chemistry Questions

The acid having $ O-O $ bond is
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 $h = 6.63 \times 10^{-34}\, Js$ ) :
The $S-S-S$ bond angle in $S_8$ molecule is $105^{\circ}$. $S_8$ has a V-shape.
Millon?? test is a test for identification of proteins. Millon?? reagent is a solution of mercurous nitrate and mercuric nitrate in nitric acid containing little nitrous acid.
Bleaching powder is a mixed salt. In the presence of $COCl _{2}$, bleaching powder decomposes to give $CaCl _{2}$ and $O _{2}$.
Among the alkali metals, lithium salts exhibit the least electrical conductance in aqueous solutions. Smaller the radius of the hydrated cation, lower is the electrical conductance in aqueous solutions.
A compound with delocalised electrons is more stable than that compound would be if all its electrons were localised. The extra stability, a compound gains as a result of having delocalised electrons, is called delocalisation energy.
$1.575\, g\, H _{2} C _{2} O _{4} \cdot 2 H _{2} O$ in $250 \,mL$ solution makes it $0.1 \,N$. $H _{2} C _{2} O _{4} \cdot 2 H _{2} O$ is a dihydrate organic acid.
Which one of the following impurities present in colloidal solution cannot be remove by electrodialysis?
When sucrose is heated with conc. $ HNO_{3},$ the product formed is