Alum helps in purifying water by

Question

Alum helps in purifying water by (A) forming Si complex with clay partiles (B) sulphate part which combines with the dirt and removes it (C) coagulaing the mud particles (D) making mud water soluble

Tardigrade Admin · Accepted Answer

Alum furnishes Al3+ ions which bring about coagulation of negatively charged clay particles, bacteria etc.

Q. Alum helps in purifying water by

forming Si complex with clay partiles

sulphate part which combines with the dirt and removes it

coagulaing the mud particles

making mud water soluble

Alum furnishes $A l^{3 +}$ ions which bring about coagulation of negatively charged clay particles, bacteria etc.