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Minamata and Itai-Itai diseases caused by metallic water pollution are caused by the following metals respectively:
  • a)
    Hg and Cd
  • b)
    Hg and Ni
  • c)
    Hg and Cu
  • d)
    Hg and Zn 
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Minamata and Itai-Itai diseases caused by metallic water pollution are...
Minamata disease:
  • Minamata disease is sometimes referred to as Chisso-Minamata disease.
  • The disease Minamata was first discovered in 1956 in Japan.
  • It is a neurological syndrome caused by severe mercury poisoning.
  • It is methylmercury (MeHg) poisoning that occurred in humans who ingested fish and shellfish contaminated by MeHg discharged in wastewater.
  • Symptoms include ataxia, numbness in the hands and feet, general muscle weakness, narrowing of the field of vision, and damage to hearing and speech. 
Itai-Itai:
  • Itai-Itai, which literally translates to ‘it hurts, it hurts’ is the name given to cadmium poisoning.
  • This name was given to the disease by the locals of Toyama Prefecture of Japan in 1912.
  • This disease was recognized as the Four Big Pollution Diseases of Japan.
  • Cadmium is a naturally occurring toxic heavy metal.
  • It is an extremely toxic industrial and environmental pollutant classified as a human carcinogen.
  • It is used in the manufacturing of NiCd rechargeable batteries.
Thus, Minamata and Itai-Itai diseases caused by metallic water pollution are caused by Hg and Cd metals respectively.
Additional Information
Brief details about the diseases caused by environmental degradation: 
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Minamata and Itai-Itai diseases caused by metallic water pollution are caused by the following metals respectively:a)Hg and Cdb)Hg and Nic)Hg and Cud)Hg and ZnCorrect answer is option 'A'. Can you explain this answer?
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