Question

Salim takes 100 g of water each in four identical containers P, Q, R and S and mixes the following in them. 5 g of salt in container P 5 g of honey in container Q 5 g of coconut oil in container R 5 g of chalk powder in container S He then places all the containers in the Sun for five hours.From which container is the LEAST amount of water likely to evaporate?A.Container P B. Container Q C. Container R D. Container S

Answer 1

least evaporation will take place from container R i,e it contains coconut oil because oil will float on top and therefore sunlight will not water directly

Answer 2

Coconut oil because oil will not let water get evaporated as it covers water from top