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

Order of increasing melting points among H₂O_(s), C_(s), CS₂ and Sn is ____________.

What type of interaction hold the molecules together in a polar molecular solid?

Ionization enthalpy is lowest in ____________.

Which among the following is an example of non-polar molecule?

Silicon carbide is an example of ____________.

London forces are present in ____________.

MgO has the structure of NaCl. The coordination number of the ions in MgO is ____________.

The hardest substance among the following is:

Molality of a solution relates the ____________.

Molarity of the solution is ____________.

The sum of all mole fraction for a mixture is always equal to ____________.

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 impurities associated with an ore is known as ____________.

Which technique utilizes the density difference between the ore and the impurity to concentrate the ore is:

The diagram shows a schematic representation of

In laboratory ammonia is prepared by heating:

Ammonia has a higher boiling point and is less volatile because of ____________.