The chemical used for coagulation in water purification is
-
Aluminium tetraoxosulphate (VI)
- Copper tetraoxosulphate (VI)
- Sodium tetraoxosulphate (VI)
- Calcium tetraoxosulphate (VI)
The correct answer is: A
Explanation
The most common chemical used for coagulation in water purification is aluminum tetraoxosulphate(VI), also known as alum.
CuSO\(_4\) is used as a fungicide, algaecide, herbicide, root killer, and soil additive. It can also be used to protect plants during seed treatment.
Na\(_2\)SO\(_4\) is used to dry organic liquids. As a filler in powdered home laundry detergents.
CaSO\(_4\) is used in tofu(a food prepared by coagulating soy milk and then pressing the resulting curds into solid white blocks of varying softness) as a coagulant.
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