List of top Chemistry Questions

The volume of carbon dioxide gas evolved at S.T.P. by heating $7.3\, gm$ of $Mg \left( HCO _{3}\right)_{2}$ will be
The rotenone is
The oxidation number of oxygen atom in $O^{2-}_2$ ion is
The number of unpaired electron in Ni2+ is ?
The number of unpaired electrons in ferrous ion(Z = 26) is
The law of mass action was given by
The incomplete combustion of $CH_4$ gives
The important ore of aluminium is
The heat produced by a $100\, W$ heater in $2\, min$. is equal to
The element, with atomic number $118$, will be
Nessler?? reagent is used in the test of
Euchlorine is produced by heating a mixture of
Carbon dioxide is isostructural with which of the following ?
Atom bomb is based on the principle of
How many gm of silver will be displaced from a solution of $AgNO_3$ by $4\, gm$ of magnesium?
What is the correct bond angle in dimethyl ether?
In the presence of an acid, hydrolysis of methyl cyanide produces
The number of $P ??OH$ bonds and the oxidation state of phosphorus atom in pyrophosphoric acid $(H_4P_2O_7)$ respectively are
Two different gases enclosed in different flasks $A$ and $B$ at same temperature and pressure were found to contain same number of molecules. The ratio of volumes of the flasks $A$ and $B$ must be
In order to protect, iron from corrosion, the iron is coated with
By the electrolysis of aqueous solution of $CuSO_{4}$, the products obtained at both the electrodes are
Phenol undergoes Kolbe?? reaction whereas ethanol does not. Phenoxide ion is more basic than ethoxide ion.
Which of the following does not exist?
Which of the following species, is planar?
Copper sulphate dissolves in ammonical solution to give deep blue colour. The colour is due to the formation of: