AIIMS 2008
- Exam
- AIIMS
- Year
- 2008
- Subject
- Botany
- Chapter
- Environmental Issues
AIIMS 2008 · Botany · Environmental Issues
Assertion : Dimethyl mercury is a highly persistent pollutant that...
Assertion : Dimethyl mercury is a highly persistent pollutant that accumulates in food chains.
Reason : Mercury pollution is responsible for minamata.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion
- BIf both assertion and reason are true but reason is not the correct explanation of assertion
- CIf assertion is true but reason is false
- DIf both assertion and reason are false.
Correct answer
B. If both assertion and reason are true but reason is not the correct explanation of assertion
Step-by-step solution
Mercury is an important toxic pollutant. It is changed to water soluble dimethyl mercury which undergoes biomagnification, i.e., accumulates in the body of organisms inhabiting in the water. Eating poisoned animals causes deformity known as minamata disease which is characterized by diarrhoea, impairment of various senses, numbness of lips, blurring of vision, mental dearrangement and death.