Organic pollutants include I. DDT II. HCl III. Pathogenic microorganisms IV. Oils The correct option is (a) I and IV (b) II and III

B) mineralization

C) Micro – Arthropoda

C) Leeuwenhoek

(A) Parasites

(B) Pathogens

(C) Lazzaro Spallanzani

A) There are high chances of getting infected with the disease.

(c) Steam distillation

1. All solids that settle during primary treatment are called primary sludge. 2. During secondary treatment the effluent is passed into a settling tank where the bacterial ‘floes’ are allowed to...

(iv) Both assertion and reason are correct statements and reason is correct explanation of assertion.