List of top Chemistry Questions

Electronic configuration of calcium atom can be written as

Elements of which of the following groups will form anions most readily?

The correct value of the gas constant 'R' is close to

$H_3PO_2$ is the molecular formula of an acid of phosphorous. Its name and basicity respectively are

The energy of an electron in the $nth$ Bohr orbit of H - atom is

Bakelite is a product of the reaction between

When phenol is treated with excess of bromine water, it gives

A is a lighter phenol and B is an aromatic carboxylic acid. Separation of a mixture of A and B can be carried out easily by using a solution of

At its melting point ice is lighter than water because

Strength hydrogen bonding is shown by

Water gas is produced by

Which one is a colligative property?

Sugarcane on reaction with nitric acid gives

0.1M solution of which one of these substances will be basic?

Methanol is industrially prepared by

For carbylamine reaction, we need hot alc. KOH and

HBr reacts fastest with

Among the following compound one that is most reactive towards electrophilic nitration is

An ideal gas cannot be liquefied because

How many isomers of $C_5 H_{11} OH$ will be primary alcohols?

Hydrogen bond is strongest in

When chlorine is passed over dry slaked lime at room temperature ,the main reaction product is

Which of the following bonds will be most polar ?

Number of electrons shared in the formation of nitrogen molecule is

Ligand in a complex salt are