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

Graphite cannot be classified as ______.

Which of the following cannot be regarded as molecular solid?

(i) SiC (Silicon carbide)

(ii) AlN

(iii) Diamond

(iv) I₂

Which of the following is a quantitative description of the solution?

When a solute is present in trace quantities the following expression is used:

Molarity of liquid HCl will be if the density of the solution is 1.17 gm/cc.

1 M, 2.5 litre NaOH solution is mixed with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of the resultant solution:

An X molal solution of a compound in benzene has mole fraction of solute equal to 0.2. The value of X is ____________.

The molarity of the solution containing 7.1 g of Na₂SO₄ in 100 ml of aqueous solution is ____________.

4.0 g of NaOH is dissolved in 100 ml solution. The normality of the solution is ____________.

The molarity of pure water is ____________.

An aqueous solution of glucose is 10% in strength. The volume in which 1 g mole of it is dissolved, will be:

10 g of NaCl is dissolved in 106 g of the solution. Its concentration is ____________.

On adding a solute to a solvent having vapour pressure 0.80 atm, vapour pressure reduces to 0.60 atm. Mole fraction of solute is:

2.5 litres of NaCl solution contain 5 moles of the solute. What is the molarity?

The mole fraction of the solute in one molal aqueous solution is ____________.

5 ml of N HCl, 20 ml of N/2 H₂SO₄ and 30 ml of N/3 HNO₃ are mixed together and volume made to one litre. The normality of the resulting solution is:

25 ml of a solution of barium hydroxide on titration with a 0.1 molar solution of hydrochloric acid gave a titre value of 35 ml. The molarity of barium hydroxide solution was ______.

Mole fraction of the solute in a 1.00 molal aqueous solution is ____________.

What is the normality of a 1 M solution of H₃PO₄?

The volume of 4 N HCl and 10 N HCl required to make 1 litre of 6 N HCl are ____________.