Pollution of Air & Water

Pollution of air and water Worksheet-4

Multiple-Choice Question:

11. A persistent insecticide is-

(A) Organophosphates                (B) Carbamates

(C) Thiocarbmates                       (D) Chlorinated hydrocarbons

12. An organochlorine insecticide is -

(A) DDT/aldrin                            (B) Malathion

(C) Tetraethyl pyrophosphate   (D) Thiocarbnamate

Pollution of air and water Worksheet-5

Multiple-Choice Question:

21. Oil slick causes mass scale death of fish due to-

(A) Clogging of gills

(B) Non-availability of oxygen in water

(C) Non-availability of food

(D) Disruption of food chain

Pollution of air and water Worksheet-6

Multiple-Choice Question:

31. Which of these play important role in causing air pollution?

(A) Thermal power plant           (B) Agricultural practice

(C) Automobiles                           (D) Industries

(E) Oil spill

32. Which of these are adverse effects of air pollution on human?

(A) Blood pressure increases/decreases

(B) Life span decreases