Question

Disease caused by eating fish inhabiting mercury contaminated water is:

• A. Hiroshima episode
• B. Minamata disease
• C. Bright’s disease
• D. Osteosclerosis

Hint:

Heavy metal pollution effects:
Mercury → Minamata disease
Cadmium → Itai-itai disease
Lead → Neurological disorders Always link the metal with its characteristic disease.

Answer 1

The Correct Option is B

Step 1: Identify the pollutant involved. The question refers to fish living in mercury-contaminated water. Mercury, especially in the form of methyl mercury, enters aquatic food chains.
Step 2: Understand bioaccumulation.
Mercury accumulates in aquatic organisms.
Concentration increases at higher trophic levels.
Humans consuming contaminated fish receive toxic doses.
Step 3: Recall the disease associated with mercury poisoning. Minamata disease is a neurological disorder caused by methyl mercury poisoning. It was first identified in Minamata, Japan, due to industrial mercury discharge into water bodies.
Step 4: Eliminate incorrect options.
Hiroshima episode: Related to nuclear radiation.
Bright’s disease: A kidney disorder.
Osteosclerosis: Abnormal hardening of bones.
Hence, the correct answer is \[ \boxed{\text{Minamata disease}} \]