List of top Chemistry Questions

Phosgene is a common name for
1 cc $N_2O$ at NTP contains
Which one of the following can exhibit cis-trans-isomerism?
The oxidation state of Cr in $K_2Cr_2O_7 $ is
Bleaching powder is obtained by the action of chlorine gas and
The ionisation energy of hydrogen atom is 13.6 eV, the ionisation energy of a singly ionised helium atom would be
The compound whose aqueous solution has the highest $P^H$ is
Hypo is used in photography to
The Cl-C-Cl angle in 1,1,2,2-tetrachloroethene and tetrachloromethane will be about
How many chain isomers could be obtained from the alkane, C$_6H_{14} $?
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
Which one is formed when sodium phenoxide is heated with ethyl iodide?
An ideal solution is formed when its components
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