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प्रश्न
Which of the following is not a human-made source of radiation pollution?
विकल्प
X-ray waste
Nuclear plants
Mining
Cosmic rays
MCQ
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उत्तर
Cosmic rays
Explanation:
Cosmic rays are a natural source of radiation coming from outer space, whereas X‑ray waste, nuclear power plants, and mining are listed as human-made (man‑made) sources of radiation pollution.
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