Alpha rays emitted from a radioactive substance are [CBSE PMT 1999; RP – McqOptions

MCQOPTIONS

1.	Alpha rays emitted from a radioactive substance are [CBSE PMT 1999; RPET 2000]
A.	Negatively charged particles
B.	Ionised hydrogen nuclei
C.	Doubly ionised helium atom
D.	Uncharged particles having the mass equal to proton
Answer» D. Uncharged particles having the mass equal to proton

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