Atoms and Nuclei Test

Result

Atoms and Nuclei Test - 114

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

In the nudear reaction ₆C¹¹ → ₅B¹¹ + β⁺ X, what doesX stand for

A
An electron

B
A proton

C
A neutron

D
A neutrino

Solution
Question 2
4 / -1

The operation of a nuclear reactor is said to be critical, if the multiplication factor (k) has a value

A
1

B
1.5

C
2.1

D
2.5
Question 3
4 / -1

The energy released in a typical nuclear fusion reaction is approximately

A
25 MeV

B
200 MeV

C
800 MeV

D
1050 MeV
Question 4
4 / -1

Which one of the following nuclear reactions is a source of energy in the sun?

A

B

C

D
Question 5
4 / -1

Heavy water is used as moderator in a nuclear reactor. The function of the moderator is

A
To control the energy released in the reactor

B
To absorb neutrons and stop chain reaction

C
To cool the reactor faster

D
To slow down the neutrons to thermal energies
Question 6
4 / -1

Nuclear fission experiments show that the neutrons split the uranium nuclei into two fragments of about same size. This process is accompanied by the emission of several

A
Protons and positrons

B
α–particles

C
Neutrons

D
Protons and α–particles
Question 7
4 / -1

₁H¹ + ₁H¹ + ₁H² → X + ₊₁e⁰ + energy. The emitted particle is

A
Neutron

B
Proton

C
α–particle

D
Neutrino

Solution
Question 8
4 / -1

A free neutron decays into a proton, an electron and

A
A neutrino

B
An antineutrino

C
An alpha particle

D
A beta particle

Solution
Question 9
4 / -1

Which of the following is used as a moderator in nuclear reactors?

A
Uranium

B
Heavy water

C
Cadmium

D
Plutonium
Question 10
4 / -1

When a slow neutron goes sufficiently close to a U²³⁵ nucleus, then the process that takes place is

A
Fission of U²³⁵

B
Fusion of neutron

C
Fusion of U²³⁵

D
First (a) then (b)