Question

MCQ : Radioactivity was discovered by

  • Category: Matter: Atomic structure
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Answer

Question

Radioactivity was discovered by

  1. Rutherford
  2. Becquerel
  3. Marie Curie
  4. Pierre Curie

Answer

Henri Becquerel

Explanation

Radioactivity was discovered by Henri Becquerel in 1896. While investigating the properties of fluorescent materials, he accidentally discovered that uranium salts emitted penetrating rays that could expose photographic plates.

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