M.Sc. Bio-Physics (PU-CET P.G) 2019 Panjab University Entrance Exam With Answers

Practice Mode:
45.

α-particle consists of:

A: 2 protons and 2 neutrons only
B: 2 electrons, 2 protons and 2 neutrons
C: 2 electrons and 4 protons only
D: 2 protons only

The answer is: A