1.
Positrons are also called ___
2.
Mesons are made of ___
3.
Kaons differ from pions because they contain ___
4.
n → n + π⁰ indicates emission of which particle?
5.
In Moseley’s equation ν = a(Z – b), the term “b” represents ___
6.
v-particles were discovered by ___
7.
In Moseley’s equation, frequency is proportional to ___
8.
Kaons include which charge states?
9.
Up and down quarks combine to form ___
10.
Which constant in Moseley’s law depends on metal nature?
11.
Moseley’s law relates X-ray frequency to ___
12.
Kaons belong to which category of particles?
13.
According to the text, neutrino spins ___
14.
Which particle is highly unstable and produces γ-rays on annihilation?
15.
Positrons were discovered by ___
16.
Atomic number of an atom is equal to ___
17.
Which property is same for all isotopes of an element?
18.
Which of the following is a meson?
19.
Up quark has a charge of ___
20.
Which of the following is NOT a v-particle?
21.
Periodic properties depend mainly on ___
22.
Which describes v-particles?
23.
Which fact about atomic number is correct?
24.
Which pair has opposite spin direction?
25.
π-mesons are also known as ___
26.
Atomic number determines the ___ of an element.
27.
Neutrinos are characterized by which property?
28.
Mass of a π-meson is approximately how many times the mass of an electron?
29.
Quarks possess which unique property?
30.
Which particle has fractional charge?
31.
Quark “flavour” refers to ___
32.
Antiprotons were discovered by ___
33.
Moseley’s law helped establish which concept?
34.
A neutron is composed of ___
35.
For ions, atomic number equals ___
36.
The charge of a proton arises due to ___
37.
Which particle is not a lepton?
38.
Which discovery involved p–p and p–n collisions?
39.
π⁰ is produced mainly in reactions involving ___
40.
Pions belong to which interaction primarily?
41.
Colour charge exists in ___
42.
Neutral pions (π⁰) were discovered by which scientist?
43.
Down quark has a charge of ___
44.
Which is NOT true about atomic number?
45.
Who proposed the existence of neutrino?
