Q64
For purifying drinking water alum is used
A.
for coagulation of mud particles
AnswerB.
to remove gases
C.
to kill bacteria
D.
to remove salts
Answer: Option A
Solution
Answer: Option A
Solution:
For purifying drinking water alum is used for coagulation of mud particles. Aluminium Sulfate, Shortly known as Alum, when added to raw water reacts with the bicarbonate alkalinities present in water and forms a gelatinous precipitate. The water over this sediment is almost clean other than some fine particles dissolved in it.