Q. Drinking of mineral water with very low level of pesticides (about 0.02 ppm) for long periods may
A) Produce immunity against mosquito
B) Cause leukaemia (blood cancer) in most people
C) Cause cancer of the intestine
D) Lead to accumulation of pesticide residues in body fat
Explanation
In India, prolonged use of 13-13 $ppm\$of DDT (pesticide) can be detected in the body fat of the people, highest in the world. Most toxic pollutants such as pesticides do not degrade easily and, therefore accumulate within the body of an organism specially in fat deposited portion. This process is known as biochemical concentration.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.