For a nucleus to be stable, the correct relation between neutron number N and Proton number Z is

(a) N > Z             (b) N = Z 
(c) N < Z             (d) NZ

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Mn and MP represent mass of neutron and proton respectively. If an element having atomic mass M has N-neutron and Z-proton, then the correct relation will be

(a) M<NMn+ZMp          (b) M>NMn+ZMp
(c) M=NMn+ZMp          (d) M=NMn+Mp

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If a H2 nucleus is completely converted into energy, the energy produced will be around

(a) 1 MeV                (b) 938 MeV
(c) 9.38 MeV           (d) 238 MeV

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The radius of a nucleus of a mass number A is directly proportional to

(a)A3              (b) A
(c) A2/3          (d) A1/3

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As compared C12 atom, C14 atom has

(a) Two extra protons and two extra electrons
(b) Two extra protons but no extra electrons
(c) Two extra neutrons and no extra electrons
(d) Two extra neutrons and two extra electrons

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If m, mn and mp are the masses of XAZ nucleus, neutron and proton respectively 
(a) m<A-Zmn+Zmp        (b) m=A-Zmn+Zmp
(c) m=A-Zmp+Zmn        (d) m>A-Zmn+Zmp

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On the bombardment of neutron with Boron. α-particle is emitted and product nuclei formed is
(a) C126          (b) Li63
(c) Li73           (d) Be94

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The average kinetic energy of the thermal neutrons is of the order of 
(a) 0.03 eV         (b) 3 eV 
(c) 3 KeV            (d) 3 MeV

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Which of the following isotopes is normally fissionable ?

(a) U23892              (b) Np23993
(c) U23592              (d) He42

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The process by which a heavy nucleus splits into light nuclei is known as 
(a) Fission            (b) α-decay
(c) Fusion             (d) Chain reaction

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