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