As compared C12 atom, C14 atom has

(1) Two extra protons and two extra electrons

(2) Two extra protons but no extra electrons

(3) Two extra neutrons and no extra electrons

(4) Two extra neutrons and two extra electrons

Subtopic:  Mass-Energy Equivalent |
 65%
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If m, mn and mp are the masses of XAZ nucleus, neutron and proton respectively 

(1) m<A-Zmn+Zmp       

(2) m=A-Zmn+Zmp

(3) m=A-Zmp+Zmn        

(4) m>A-Zmn+Zmp

Subtopic:  Mass-Energy Equivalent |
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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 |
 66%
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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 |
 60%
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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 |
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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 |
 70%
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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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