List of top Chemistry Questions

The reaction of $H_2 O_ 2$ with hydrogen sulphide is an example of ................ reaction.
Which of the following is a nitric acid anhydride?
The angle between the overlapping of one s-orbital and one p-orbital is
Equilateral shape has
An ideal solution is formed when its components
Which one is formed when sodium phenoxide is heated with ethyl iodide?
At STP, the density of $CCl_4$ vapour in g/L will be nearest to
The spectrum of helium is expected to be similar to that of
Which one of the following compounds does not exist ?
In 3p-orbital, the number of spherical nodes is
One litre hard water contains 12.00 mg $Mg^{2+}$. Milliequivalents of washing soda required to remove its hardness is
The outermost electronic configuration of the most electronegative element is
The atomic nucleus contains
Which of the following is optically inactive?
The first ionisation potential of Na, Mg, Al and Si are in the
The equivalent weight of MnSO$_4$ is half of its molecular weight, when it converts to
In which mode of expression, the concentration of a solution remains independent of temperature?
For the reaction , $ CO ( g) + H_2 O ( g) \rightleftharpoons \, CO_2 \, ( g) + H_2 \, ( g ) $ at a given temperature, the equilibrium amount of $CO_2 (g)$ can be increased by
Which one of the following is the true covalent oxide of iodine ?
RNA does not possess
Keto-enol tautomerism is observed in
Calorific value is in order
Which one is formed when sodium phenoxide is heated with ethyl iodide?
What is the weight of oxygen required for the complete combustion of 2.8 kg of ethylene?
Lucas reagent is