Chemistry-8-Radioactivity

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1.
Presence of which among the following minerals in Banana makes them slightly radioactive?
2.
Which among the following scientists had discovered Radium?
3.
Who among the following scientists had discovered Radium?
4.
How does the Isotope of Iodine, Iodine-135 plays an important role in Nuclear Power Generation?
5.
Argon is the third most common gas in the Earth’s atmosphere, at 0.93%. This gas is generated due to decay of which among the following isotopes in the Earth’s crust ?
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