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Which of these is a carcinogen?

  • A.Cadmium
  • B.Asbestos
  • C.Benzene
  • D.All the above

Answer: D

All three - cadmium, asbestos and benzene - are carcinogens.

Asbestos fibres cause mesothelioma and lung cancer, benzene causes leukaemia, and cadmium is linked with lung and prostate cancer. All are classed as Group 1 human carcinogens by the IARC.

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