Thermal neutrons can cause fission in 

(1) U235          

(2) U238

(3) Pu238        

(4) Th232

Subtopic:  Mass-Energy Equivalent |
 70%
From NCERT
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When neutrons are bombarded on nucleus of U23592, the number of emitted neutrons will be 

(1) 1         

(2) 2

(3) 3         

(4) 4

Subtopic:  Mass-Energy Equivalent |
 63%
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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 |
 86%
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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 |
 63%
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