Question

classify each of the following a physical or chemical change give reason a drive off a shirt in the sun

Answer 1

Here the given situation undergoes c
physical state.
Because,
By driving off a shirt in sun, which is wet, soon the water molecules present in it gets evaporated when it is left in sun for some time.

Answer 2

(a) Drying of a shirt in the sun is a physical change because evaporation of water takes place but no change occurs in the composition of the substance.

(b) Rising of hot air over a radiator is a physical change because it is involving the only movement of air, no change in the composition of air.

(c) Burning of kerosene in a lantern is a chemical change because kerosene burns to form carbon dioxide and water vapour.

(d) Change in the colour of black tea on adding lemon juice to it is a chemical change as a new substance with chemical properties are formed.

(e) Churning of milk cream to get butter is a physical change as there is no change in composition. Only the separation of components takes place by the physical phenomenon called centrifugation.