16 Which one of the following is not a true statement about

16. Which one of the following is not a true statement about water purification.
a. water can be desalinated by reverse osmosis
b. water can be desalinated by distillation (Incorrect)
c. water can be purified by chlorination
d. water can be purified by nitration
e. water can be purified by adding aluminum sulfate
f. water can be purified by addition calcium hydroxide

Solution

Water can be purified by nitrate removal but not adding nitrates and therefore water cannot be purified using nitration. Except that all the other statements are true.

Therefore d. Water can be purified by nitration is the answer.