List of top Chemistry Questions

In a given atom no two electrons can have the same values of all the four quantum numbers. This is called
In compound ' X - all the bond angles are exactly 109$^{\circ}$28', 'X - is
Aqueous solution of acetic acid contains
In a closed flask of 5 L, 1.0 g of $H_2$ is heated from 300 to 600 K. Which statement is not correct?
The basic unit of nucleic acid is
The bleaching action of chlorine is due to
The correct order of decreasing polarisability of the ions is
Which of the following aqueous solution has minimum freezing point?
Which would quickly absorb oxygen?
In sodium fusion test of organic compounds, the nitrogen of the organic compound is converted into
An $sp^3$ hybrid orbital contains
Cinnabar is an ore of
For orthorhombic system axial ratios are $a \ne b \ne c$ and the axial angles are
Oleum is
On hydrolysis of starch, we finally get
The transition elements have a general electronic configuration.
Phosphine may be produced by adding lo water some
The relative lowering of the vapour pressure is equal to the ratio between the number of
Which overlap is involved in HCl molecule ?
The oxidation state of the most electronegative element in the products of the reaction. $ BaO_2 $ with dil, $ H_2SO_4 $ are
The reaction which proceed in the forward direction is
Natural rubber is a polymer of
As the atomic number of halogens increases the halogens
AgCl dissolves in $NH_4OH$ due to the formation of
Which of the following is the most stable carbocation (carbonium ion)?