ऐल्फा किरणें है - – McqOptions

MCQOPTIONS

1.	ऐल्फा किरणें है -
A.	विद्युत चुम्बकीय विकिरण
B.	ऋण आवेशित कण
C.	हाइड्रोजन के नाभिक
D.	हीलियम के नाभिक
Answer» E.

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