A suspension of chalk in water can be prepared by;
(a) placing a piece of chalk in water.
(b) placing powdered chalk in water.
(c) placing powdered chalk in water and then vigrously shaking.
(d) placing powdered chalk in HCl.
The correct option is c.
on dissolving chalk powder in water , a suspension is obtained. The mixture is stirred for sometime to ensure the uniform dispersion of chalk powder in water.
Suspension is a heterogeneous mixture of particles from which the particles settle down with time. Chalk powder does not dissolve in water at all. It just form a suspension in water and after some time settle down under the influence of gravity.
on dissolving chalk powder in water , a suspension is obtained. The mixture is stirred for sometime to ensure the uniform dispersion of chalk powder in water.
Suspension is a heterogeneous mixture of particles from which the particles settle down with time. Chalk powder does not dissolve in water at all. It just form a suspension in water and after some time settle down under the influence of gravity.