Question

An α-particle is bombarded on ¹⁴N. As a result, a ¹⁷O nucleus is formed and a particle is emitted. This particle is a
(a) neutron
(b) proton
(c) electron
(d) positron.

Answer 1

(b) proton

If an alpha particle is bombarded on a nitrogen (N-14) nucleus, an oxygen (O-17) nucleus and a proton are released.
According to the conservation of mass and charge,
${}_2{}^{4}He+{}_7{}^{14}N\to {}_6{}^{17}O+{}_1{}^{1}p$
So, the emitted particle is a proton.