1.
The density of proton is approximately ___
2.
Which particle does NOT take part in beta decay?
3.
The mass of proton is approximately equal to ___
5.
The density of neutron is approximately ___
6.
The correct decay of neutron is ___
7.
The reaction n → p + π⁻ indicates ___
8.
Photoelectric effect proves that electrons exhibit ___
9.
Positive rays are also known as ___
10.
The charge of proton is equal in magnitude to that of electron because of ___
11.
The mass of neutron is about ___
12.
Neutron is the best projectile because ___
13.
Electron leaves its orbit for max duration of ___
14.
Which of the following is wrong about proton?
15.
The stability of nucleus is mainly due to ___
16.
The proton mass in amu is approximately ___
17.
Which of the following is correct for mesons?
18.
Which of the following increases the mass number of a nucleus?
19.
The main reason for late discovery of neutron was ___
20.
An isolated neutron undergoes disintegration because ___
21.
Which experiment proved that electron has a definite mass?
22.
Which particle has no charge but has mass?
23.
The mass of proton is approximately how many times the mass of electron?
24.
The e/m value of proton changes with ___
25.
The e/m ratio of positive rays is maximum in ___
26.
The charge on proton in esu is ___
27.
Which sub-atomic particle was the last to be discovered?
28.
The term “proton” was coined by ___
29.
A neutron can be converted into proton when ___
30.
The decay of neutron produces a neutrino to conserve ___
31.
The proton was discovered by ___
32.
Mesons (π-mesons) are responsible for ___
33.
Which of the following is false?
34.
Mesons exist in the region of ___
35.
The deflection of positive rays in a discharge tube depends on ___
36.
The first evidence of atomic nucleus came from ___
37.
The range of nuclear force is about ___
38.
The e/m ratio of proton is ___
39.
The particle nature of electron was confirmed by which experiment?
40.
Which particle is responsible for emission of beta rays?
41.
Which statement about neutron is wrong?
42.
The proton behaves as a stable particle because ___
43.
The component most responsible for nuclear density is ___
44.
Which discovery is associated with scintillation effect on ZnS screen?
45.
Which particle has the highest penetrating ability?
