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