In a kitchen, used cooking oil can be thrown down the drain.
Question 21
What happens when
(a) cooking medium is made to flow down a drain?
(b) insecticides, motor oil, and paints are poured down the drain?
(c) tea leaves, cotton swabs, and soft old toys are thrown into the drain?
Question 18
Why should we not throw (a) Used tea leaves into the sink? (b) Cooking oil and fats down the drain?