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Question

Artificial radioactivity was discovered by:

A
Rontegen
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B
Becquerel
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C
Marie Curie
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D
Irene Joliot Curie
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Solution

The correct option is D Irene Joliot Curie
Artificial or induced radio activity was discovered by Irene Joliot Curie and her husband Frederic Joliot in 1934. and this is also known as man-made radio activity.
The phenomenon by which even light elements are made radioactive by artificial or induced methods is called artificial radioactivity.
So answer is D.

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