On the bombardment of neutron with Boron. α-particle is emitted and product nuclei formed is

(1) C126         

(2) Li63

(3) Li73           

(4) Be94

Subtopic:  Mass-Energy Equivalent |
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The average kinetic energy of the thermal neutrons is of the order of 

(1) 0.03 eV         

(2) 3 eV 

(3) 3 KeV           

(4) 3 MeV

Subtopic:  Mass-Energy Equivalent |
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Which of the following isotopes is normally fissionable ?

(1) U23892             

(2) Np23993

(3) U23592             

(4) He42

Subtopic:  Mass-Energy Equivalent |
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The process by which a heavy nucleus splits into light nuclei is known as 

(1) Fission           

(2) α-decay

(3) Fusion             

(4) Chain reaction

Subtopic:  Mass-Energy Equivalent |
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The explosion of the atomic bomb takes place due to

1. Nuclear fission           

2. Nuclear fusion

3. Scattering               

4. Thermionic emission

Subtopic:  Mass-Energy Equivalent |
 79%
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In nuclear reaction \({}_{2}^{4}\mathrm{He}+ {}_{Z}^{A}\mathrm{X}\rightarrow {}_{Z+2}^{A+3}\mathrm{X}+\mathrm{B},\) \(\mathrm {B}\) denotes:
1. Electron
2. Positron
3. Proton
4. Neutron

Subtopic:  Types of Decay |
 64%
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Energy generation in stars is mainly due to

(1) Chemical reactions               

(2) Fission of heavy nuclei

(3) Fusion of light nuclei             

(4) Fusion of heavy nuclei

Subtopic:  Mass-Energy Equivalent |
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Fusion reaction is initiated with the help of 

(1) Low temperature         

(2) High temperature

(3) Neutrons                     

(4) Any particle

Subtopic:  Mass-Energy Equivalent |
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When a Be49 atom is bombarded with α particles, one of the product of nuclear transmutation is C612. The other is 

(1) e-10           

(2) H11

(3) D12            

(4) n01

Subtopic:  Mass-Energy Equivalent |
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During the nuclear fusion reaction 

(1) A heavy nucleus breaks into two fragments by itself

(2) A light nucleus bombarded by thermal neutrons breaks up

(3) A heavy nucleus bombarded by thermal neutrons breaks up

(4) Two light nuclei combine to give a heavier nucleus and  possibly other products

Subtopic:  Mass-Energy Equivalent |
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