. Name the process associated with the following

Name the process associated with the following

(a) Dry ice is kept at room temperature and at  one atmospheric pressure.

(b) A drop of ink placed on the surface of water contained in a glass spreads throughout the water.

(c) A potassium permanganate crystal is in a beaker and water is poured into the beaker with stirring.

(d) A acetone bottle is left open and the bottle becomes empty.

(e) Milk is churned to separate cream from it.

(f) Settling of sand when a mixture of sand and water is left undisturbed

for some time.

(g) Fine  beam  of light  entering through a small  hole  in  a dark  room, illuminates the particles in its paths