Science (English Medium) Class 12 - CBSE Question Bank Solutions

Rate of reaction for the combustion of propane is equal to:

\[\ce{C3H8_{(g)} + 5O2_{(g)} -> 3CO2_{(g)} + 4H2O_{(g)}}\]

What is the order of a reaction which has a rate expression; Rate = `"k"["A"]^(3/2)["B"]^1`?

Molecularity of a reaction _____________.

Which of the following statement is true for order of a reaction?

The substance that gets adsorbed on the surface of the solid is called ____________.

Water vapours are adsorbed by:

Adsorption is accompanied by:

The phenomenon in which adsorption and absorption take place simultaneously is called ____________.

Metals which occur in their native state in nature:

Metal which is found in free state is:

Which among the following statement is correct?

The most abundant metal on earth is:

The sulphide ore of iron is ____________.

Carbonate ore of iron is ____________.

Elements having +5 oxidation state is ____________.

[Ar]3d¹⁰4s²4p³ is the electronic configuration of ____________.

The most common oxidation states of nitrogen are ____________.

In which of the following compound, nitrogen shows the oxidation state of +5?

Maximum covalency of nitrogen is ______.

Which among the following forms basic oxide?