Question 5
Water polluted by various human activities causes a number of water-borne diseases. Which of the following is not a water-borne disease? (a) Cholera (b) Typhoid (c) Asthma (d) Dysentery
The usual disease caused by the excessive drinking of alcohol over a long period fo time is :
(a) diabetes (b) cataract (c) cirrhosis (d) arthritis
AIDS disease is caused by :
(a) bacteria (b) virus (c) worms (d) protozoa