The energy released in a typical nuclear fusion reaction is approximately 

(1) 25 MeV           

(2) 200 MeV

(3) 800 MeV         

(4) 1050 MeV

Subtopic:  Mass-Energy Equivalent |
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Which one of the following nuclear reactions is a source of energy in the sun 

(1) Be49+He24C612+n0-1

(2) He23+He23He24+H11+H11

(3) Ba56144+Kr5692U92235+n0-1

(4) Fe2656+Ca48112W74167+n0-1

Subtopic:  Mass-Energy Equivalent |
 82%
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Which of these is a fusion reaction 

(1) H13+H12He24+n01

(2) U92238Pb82206+8He24+6β-10

(3) C712C612+β++γ

(4) None of these

Subtopic:  Mass-Energy Equivalent |
 87%
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In a nuclear fission reaction 

(1) Two light nuclei combine to produce a heavier nucleus

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

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

(4) A heavy nucleus breaks up by itself

Subtopic:  Mass-Energy Equivalent |
 75%
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Hydrogen bomb is based on which of the following phenomenon

(1) Nuclear fission             

(2) Nuclear fusion

(3) Radioactive decay       

(4) None of these

Subtopic:  Mass-Energy Equivalent |
 66%
From NCERT
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The number of neutrons released when U23592 undergoes fission by absorbing n01 and Ba56144+Kr3689are formed, is 

(1) 0           

(2) 1

(3) 2         

(4) 3

Subtopic:  Mass-Energy Equivalent |
 68%
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Which of the following particle has similar mass to electron

(1) Proton             

(2) Neutron

(3) Positron           

(4) Neutrino

Subtopic:  Mass-Energy Equivalent |
 78%
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Neutrino is a particle, which is 

(1) Charged and has spin

(2) Charged and has no spin

(3) Charge less and has spin

(4) Charge less and has no spin

Subtopic:  Mass-Energy Equivalent |
 64%
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To generate a power of 3.2 mega watt, the number of fissions of U235 per minute is
(Energy released per fission = 200MeV, 1eV=1.6×10-19 J 

(1) 6×1018        

(2) 6×1017

(3) 1017             

(4) 6×1016

Subtopic:  Nuclear Energy |
 54%
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The average number of prompt neutrons produced per fission of U235 is 

(1) More than 5         

(2) 3 to 5

(3) 2 to 3                 

(4) 1 to 2

Subtopic:  Mass-Energy Equivalent |
 68%
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