List of top Chemistry Questions

A1 is more reactive than Fe but A1 is less'-easily corroded than Fe because

The catalyst used in the manufacture of polyethene by Zeigler method is

The osmotic pressure of a solution can be increased by

The number of hydroxyl groups in pyrophosphoric acid is

The solubility of AgCl will be minimum in

When $I_2$ is dissolved in $CCI_4$ the colour that results is

The number of unpaired electrons in $Zn^{2+}$ is

Reduction of 2-butyne with sodium in liquid ammonia gives predominantly

Which one of the following on oxidation gives a ketone?

Which of the following fertilizers has the highest nitrogen percentage ?

When $CuSO_4 $ is electrolysed using platinum electrodes?

What is formed when a primary alcohol undergoes catalytic dehydrogenation?

In the fluorite structure, the coordination number of $ Ca^{2+}$ ion is

Which one of the following has the smallest heat of hydrogenation per mole ?

Equal weights of ethane and hydrogen are mixed in an empty container at $25^\circ$ C. The fraction of the total pressure exerted by hydrogen is

Increasing order of acidic strength among p-methoxy phenol (I), p-methyl phenol (II) and p-nitrophenol (III) is

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

Strength hydrogen bonding is shown by

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

Hydrogen bond is strongest in

HBr reacts fastest with

Electronic configuration of calcium atom can be written as

For carbylamine reaction, we need hot alc. KOH and

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

Sugarcane on reaction with nitric acid gives