Nuclear Science mcq questions and answers for competitive exams

Ramya_naidu

Posted on


Nuclear Science mcq questions and answers for competitive exams UPSC SSC , SSC CGL, SSC CHSL, upsc Civils , Entrance exams Online test practice online free Quiz, mock practice online
16.
Specific gravity of uranium and plutonium is about

a
9
b
13
c
19
d
27

17.
Enrichment of uranium is done to increase the concentration of in the natural uranium.

a
U-233
b
U-235
c
U-238
d
Pu-239

18.
The wavelength of X-rays is of the order of

a
1 m
b
1 cm
c
1 angstrom
d
10 micron

19.
U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about percent.

a
3
b
50
c
85
d
97

20.
Atoms are composed of

a
Electrons only
b
Protons only
c
Electrons and nuclei
d
Electrons and protons

21.
Which of the following shows the masses of the three elementary particles in decreasing order?

a
Baryons, Mesons, Leptons
b
Leptons, Mesons, Baryons
c
Mesons, Baryons, Leptons
d
A Leptons, Baryons, Mesons

22.
The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is

a
1
b
2
c
3
d
4

23.
Which Uranium isotope is used in nuclear power plants to produce electricity?

a
U-233
b
U-234
c
U-238
d
U-239

24.
Which of the following nuclear materials is fissile?

a
Thorium-232
b
Uranium-238
c
Plutonium-239
d
None of these

25.
If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be days.

a
10
b
20
c
30
d
40

26.
The function of heavy water in a nuclear reactor is to -

a
Cool down the reactor
b
Stop the nuclear reaction
c
Increase the speed of neutrons
d
Slow down the speed of neutrons

27.
Minimum energy required to pull nucleus apart is called

a
electron affinity
b
binding energy
c
chemical energy
d
ionization energy

28.
The Satellite launching centre of Indian Space Research Organization is in -

a
Thumaba
b
Bengaluru
c
Sriharikota
d
Thiruvananthapuram

29.
Which of the following is not a naturally occurring nuclear fuel?

a
Uranium-238
b
Thorium-233
c
Plutonium-239
d
None of these

30.
Who suggested that most of the mass of the atom is located in the nucleus?

a
Bohr
b
Einstein
c
Rutherford
d
Thompson

Rate This:
NaN / 5 - 1 votes
Profile photo for Dasaradhan Gajendra