List of top Chemistry Questions

The electronic configuration of a dipositive ion $M^{2+}$ is 2, 8, 14 and its mass number is 56. The number of neutrons present is

The electronic configuration $1s^2,2s^2, 2p^6, 3s^1$ and $3p^1$ is correctly describe by

The electron affinity of Noble gases is

The correct order of acidity for the following compounds is

The calorific value of fat is

The basicity of $H_3PO_4$ is

The aqueous solution of which of the following has maximum pH ?

The acid used in lead storage cells is

Sweet spirit of nitre is

Sulphuric acid provides a simple example of

Species Plantarum and Systema Naturae were written by

Smoke is an example of :

Small liquid droplets dispersed in another liquid is called

$SiO_2$ is a/an

$SiH_4 + NaOH + H_2O-------> X + 3H_2 X$ in the above reaction is

Select the species acting as reductant and oxidant in the following. $ {PCl3 + Cl2 -> PCl5}$

Sea divers go deep in the sea water with a mixture of which of the following gases?

Red colour complex ion formed on adding $FeCl_3$ to S.E. (sodium extract) when N and S both are present in organic compound is

A unit in nucleic acid which contains ??ase-sugar phosphate??unit is called

In colloid particles, range of diameter is

Total volume of atoms present in a face centred cubic unit cell of a metal is ( $ r= $ atomic radius)

Moderate electrical conductivity is shown by

Identify the correct statements from the following a) Li and Mg form solid hydrogen carbonates b) LiCl and $ {MgCl_2}$ are soluble in ethanol c) $ {KO_2}$ is soluble in water and liberates $ {O_2}$ and $ {H2O_2}$

Calculate the volume (in L) of hydrogen gas liberated at $27^{\circ}C$ and 760 mm pressure during the treatment of 1.2 g of magnesium with excess hydrochloric acid [Atomic mass of Mg = 24]

Match the column I and column II and mark the appropriate choice.