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Nuclei Test - 5...

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  • Question 1
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    Consider the following reaction:
    $${ _{  }^{ 1 }{ H } }_{ 2 }+{ _{  }^{ 1 }{ H } }_{ 2 }\rightarrow { _{ 1 }^{  }{ He } }^{ 4 }+Q$$
    If $$m({ _{ 1 }^{  }{ H } }^{ 2 })=2.0141u$$; $$m({ _{ 2 }^{  }{ He } }^{ 4 })=4.0024u$$, the energy $$Q$$ released (in MeV) in this fusion reacion is

  • Question 2
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    In the nuclear reaction
    $${ _{ 1 }^{  }{ H } }^{ 2 }+{ _{ 1 }^{  }{ H } }^{ 2 }\rightarrow { _{ 2 }^{  }{ He } }^{ 3 }+{ _{ 0 }^{  }{ n } }^{ 1 }$$
    if the mass of the deuterium atom $$=2.014741a.m.u$$, mass of $${ _{ 2 }^{  }{ He } }^{ 3 }=3.016977a.m.u$$ and mass of neutron $$=1.008987a.m.u$$, then the $$Q$$ value of the reaction is nearly

  • Question 3
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    Binding energy per nucleon for $${C}^{12}$$ is $$7.68MeV$$ and for $${C}^{13}$$ is $$7.74MeV$$. The energy required to remove a neutron from $${C}^{13}$$ is

  • Question 4
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    Binding energy per nucleon of $${ _{ 1 }^{  }{ H } }^{ 2 }$$ and $${ _{ 2 }^{  }{ He } }^{ 4 }$$ are $$1.1MeV$$ and $$7.0MeV$$, respectively. Energy released in the process $${ _{ 1 }^{  }{ H } }^{ 2 }+{ _{ 1 }^{  }{ H } }^{ 2 }\rightarrow{ _{ 2 }^{  }{ He } }^{ 4 }$$ is

  • Question 5
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    When a nucleus in an atom undergoes radioactive decay, the electronic energy levels of the atom

  • Question 6
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    Tritium is an isotope of hydrogen whose nucleus Triton contains $$2$$ neutrons and $$1$$ proton. Free neutrons decay into $$p+\vec { e } +\vec { v } $$.  If one of the neutrons in Triton decays, it would transform into $${ _{ 2 }^{  }{ He } }^{ 3 }$$. This does not happen. This is because

  • Question 7
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    Heavy stable nucleus have more neutrons than protons. This is because of the fact that

  • Question 8
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    The particle used in nuclear fission for bombardment is:

  • Question 9
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    Nuclear binding energy is equivalent to 

  • Question 10
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    The accepted unit of atomic and molecular mass is:

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