Quiz: Cobalt and Cancer

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1. Q1.How do health agencies classify cobalt metal?

   AA known human carcinogen (strongest evidence)BA possible human carcinogen (weaker evidence)CNot classifiable — evidence is inconclusiveDA probable (likely) human carcinogen

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2. Q2.According to this article, how are people most often exposed to cobalt metal?

   AThere is no known way for people to be exposed to itBBreathing cobalt dust or fumes in certain industriesCOnly by taking a prescription medicine for itDOnly through contact with the eyes

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3. Q3.Cobalt metal is most strongly linked to which cancer?

   Abrain tumorsBchildhood leukemiaCA suspected link to lung cancerDmelanoma of the skin

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4. Q4.What does it mean that cobalt metal is classified as a carcinogen?

   AThat it can cause cancer under some conditions — a hazard, not a measure of personal riskBThat everyone exposed to it is certain to get cancerCThat it has been banned in every countryDThat there is no way to reduce exposure to it

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This quiz checks understanding of educational content only. It is not medical advice. Read: Cobalt and Cancer.