Which of the following substances are commonly used in a ...
Which of the following substances are commonly used in a filter?
Charcoal
Sand
Both (a) and (b)
Aluminum chloride
Correct answer is C
No explanation has been provided for this answer.
Milk digestibility is improved by using ...
Conventional tertiary treatment is ...
Calgon is used for removal of ...
Both temporary and permanent hardness of water can be removed on boiling water with ...
The methods used for biological treatment are ...
The common method(s) used for disinfection in waste water treatment plants are ...
Both temporary and permanent hardness of water can be removed by ...