1.
The particle nature of electron was confirmed by which experiment?
2.
Neutron is the best projectile because ___
3.
Which of the following is correct for mesons?
4.
Which sub-atomic particle was the last to be discovered?
5.
The e/m ratio of proton is ___
6.
Which particle has the highest penetrating ability?
7.
Which experiment proved that electron has a definite mass?
8.
Which particle is responsible for emission of beta rays?
9.
The proton behaves as a stable particle because ___
10.
A neutron can be converted into proton when ___
11.
The density of proton is approximately ___
12.
The H-atom has no ___
13.
The proton mass in amu is approximately ___
14.
Mesons exist in the region of ___
15.
The correct decay of neutron is ___
16.
The mass of neutron is about ___
17.
Positive rays are also known as ___
18.
The stability of nucleus is mainly due to ___
19.
The component most responsible for nuclear density is ___
20.
Which particle does NOT take part in beta decay?
21.
Which of the following is false?
22.
Which statement about neutron is wrong?
23.
Mesons (π-mesons) are responsible for ___
24.
The range of nuclear force is about ___
25.
Which particle has no charge but has mass?
26.
The term “proton” was coined by ___
27.
The proton was discovered by ___
28.
Which of the following is wrong about proton?
29.
The density of neutron is approximately ___
30.
The first evidence of atomic nucleus came from ___
31.
The e/m value of proton changes with ___
32.
The charge of proton is equal in magnitude to that of electron because of ___
33.
Which of the following increases the mass number of a nucleus?
34.
An isolated neutron undergoes disintegration because ___
35.
The deflection of positive rays in a discharge tube depends on ___
36.
The reaction n → p + π⁻ indicates ___
37.
The main reason for late discovery of neutron was ___
38.
The e/m ratio of positive rays is maximum in ___
39.
Electron leaves its orbit for max duration of ___
40.
Which discovery is associated with scintillation effect on ZnS screen?
41.
The mass of proton is approximately equal to ___
42.
The decay of neutron produces a neutrino to conserve ___
43.
The charge on proton in esu is ___
44.
The mass of proton is approximately how many times the mass of electron?
45.
Photoelectric effect proves that electrons exhibit ___
