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 answer is option (c).
Asthma is not a water-borne disease. It is caused by polluted air. Cholera, typhoid, dysentery are caused by polluted water. The consumption of polluted water leads to these diseases. Also, the contaminated water leads to the growth of harmful microbes, flies and mosquitoes which results in the spreading of these diseases.