32. . . . . . . . . is a by product of sewage treatment and can be decomposed to produce biogas.
33. Chernobyl disaster is the result of pollution by
34. Sullage water is-
35. Acid rain is specified when pH is
36. Consider the following assertion and reason and select the correct answer:
Assertion (A) Ozone kills microorganism in water.
Reason (R) Ozone is not radioactive.
Assertion (A) Ozone kills microorganism in water.
Reason (R) Ozone is not radioactive.