is used as preservatives and additives to the food we eat b. evaporation d. sieving II. Choose the letter of the correct answer. 19. Salt which is the result of daily a. Distillation c, filtration make the rice clean. As well as mongo 20. The rice chaff which is separated through seeds which is separated from its cover becomes clean also. a Winnowing b. decantation c. magnetism d. Sedimentation 21. Oll refineries use to separate petrol and diesel from crude oil, a. Decantation b. distillation c. winnowing d. evaporation 22. In the sand which is used in finishing the concrete wall is separated from the pebbles a. Evaporation b. magnetism c. filtration d. sieving 23. Which of the following mixtures can be best separated using a magnet? a, water and sand b. oil and water c. sugar and salt d. sand and iron nails 24. To separate rocks into different sized particles for road building and other construction projects, which technique is applicable? a. condensation d. sieving b. evaporation d. using magnet 25. Which of these is NOT a technique in separating a mixture? a, decantation c. filtration b. dissolving d. Filtration​