(a) It is a physical change because water is converted from its liquid state to gaseous state because of the sun’s heat.
(b) It is a physical change because water in the radiator is converted from a liquid state to gaseous state.
(c) It is a chemical change because combustion of kerosene occurs and new products are formed.
(d) It is a chemical change because there is a reaction between the citric acid in the lemon and the compounds of tea resulting in formation of new products.
(e) It is a physical change because the cream suspended in the milk is separated by churning.