On what basis atmosphere is divided in four regions:-

The melting point of sodium chloride is:-

Formula mas of potassium Sulphate K₂SO₄ is:

It is pure cellular

Copper sulphate has  water of crystallization

When reaction ceases to proceed it is called:

According to Lewis concept, acid  is a substance which can:-

Second period contains number of periods:-

Which one of the following is not example of open chain hydrocarbons

Bleaching powder is the example of:-

Percentage by weight of hydrogen in ocean is:

The Molar Mas of H2SO4 is:

The number of elements in 6th period is:

When reaction ceases to proceed it is called:

The percentage of Oxygen in human body is:

Nelson cell Is used to prepared caustic soda along with gases which of the following gas is produced at cathode

Molarity is the number of mole of solute dissolve in

Gases are the lightest form of matter and their densities are expressed in term of:

Percentage of methane in natural gas is:-

Acid react with metal sulphides to liberate

P-subshell can accommodate electrons:-

The electronegativity of chlorine is:

The atomic mass of fluorine is:

How much electrons can be accommodated in M-Shell: