रेडियोधर्मी पदार्थ उत्सर� – McqOptions

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1.	रेडियोधर्मी पदार्थ उत्सर्जित करता है -
A.	गामा किरण
B.	बीटा किरण
C.	अल्फा किरण
D.	उपर्युक्त सभी
Answer» E.

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