Mp denotes the mass of a proton and Mn that of a neutron. A given nucleus, of binding energy B, contains Z protons and N neutrons. The mass M(N, Z) of the nucleus is given by (c is the velocity of light) 
(a) M(N,Z)=NMn+ZMp-Bc2
(b) M(N,Z)=NMn+ZMp+Bc2
(c) M(N,Z)=NMn+ZMp-B/c2
(d) M(N,Z)=NMn+ZMp+B/c2

Concept Questions :-

Mass-energy equivalent
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Complete the reaction
n+U92235Ba56144+...+3n
(a) Kr3689       (b) Kr3690
(c) Kr3691       (d) Kr3692

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Radioactivity
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1 atomic mass unit is equal to 
(a) 125 (mass of F2 molecules)
(b) 114 (mass of N2 molecules)
(c) 112 (mass of one C-atom)
(d) 116 (mass of O2 molecules)

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Mass-energy equivalent
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The nucleus U92234 splits exactly in half in a fission reaction in which two neutrons are released. The resultant nuclei are

(a) Pd46116         (b) Rh45117
(c) Rh45116       (d) Pd46117

Concept Questions :-

Radioactivity
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A nucleus is bombarded with a high speed neutron so that resulting nucleus is a radioactive one. This phenomenon is called 
(a) Artificial radioactivity          (b) Fusion
(c) Fission                               (d) Radioactivity

Concept Questions :-

Radioactivity
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Which of the following cannot cause fission in a heavy nucleus 
(a) α-particle          (b) Proton
(c) Deutron             (d) Laser rays

Concept Questions :-

Radioactivity
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 If the mass number of an atom is A = 40 and its electron configuration is 1s22s22p63s23p6, the number of neutrons and protons in its nucleus will be 
(a) 22, 18            (b) 18, 22
(c) 20, 20            (d) 18, 18

Concept Questions :-

Mass-energy equivalent
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Which of the following is most unstable
(a) Electrons           (b) Protons
(c) Neutrons           (d) α-particle

Concept Questions :-

Radioactivity
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The nuclei of which one of the following pairs of nuclei are isotones 
(a) Se3474, Ca3171           (b) Mo4292, Zr4092
(c) Sr3881, Sr3886             (d) Ca2040, S1632

Concept Questions :-

Nuclear binding energy
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Fission of nuclei is possible because the binding energy per nucleon in them 
1. Increases with mass number at high mass numbers
2. Decreases with mass number at high mass numbers
3. Increases with mass number at low mass numbers
4. Decreases with mass number at low mass numbers

Concept Questions :-

Nuclear reactor
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