question_answer 29)

  Which one of the following diseases is not due to contamination of water? (a) Hepatitis-B   (b) jaundice                        (c) Cholera                          (d) Typhoid

Answer:

                  Hepatitis-B is initially not caused by contamination of water but by the exposure to Infectious agents on the other hand, jaundice, cholera and typhoid are water and food borne diseases which are the caused the by contamination of food item.