Question

Read the following statements :
(i) There are many man made technologies that are more efficient than the microbial treatment of sewage.
(ii) Primary treatment of waste water is the biological treatment
(iii) Activate sludge digesters are a part of the secondary treatment.
Choose the correct option from below.
a.All are correct
b.(i) and (iii) are correct
c.Only (ii) correct
d.Only (iii) is correct

Answer 1

Explanation:

a)All are correct is the correct answer