Nuclei

Binding energy of a certain nucleus is 18 108 J. How much is the difference between total mass of all the nucleons and nuclear mass of the given nucleus:

1. 20 g
2. 2 g
3. 10 g
4. 0.2 g

If M0 is the mass of isotope 125B, Mp and Mn are the masses of proton and neutron, then nuclear binding energy of isotope is:

1. (5Mp + 7Mn - M0)C2
2. (M0 - 5Mp - 7Mn)C2
3. (M0 - 5Mp)C2
4. (M0 - 12Mn)C2

In a hypothetical fission reaction 92X236 56Y141 + 36Z92 + 3R The identity of emitted particles (R) is :

1. Proton
2. Neutron
3. Electron
4. -radiations

If three helium nuclei combine to form a carbon nucleus then the energy released in this reaction is 10-2 MeV. (Given 1 u = 931 MeV/c2, atomic mass of helium = 4.002603 u)

Which of the following nuclear fragments corresponding to nuclear fission between neutron (01n ) and uranium isotope (92235U ) is correct :

1. 56140Xe+3894Sr+301n
2. 51153Sb+4199Nb+301n
3. 56144Ba+3689Kr+401n
4. 56144Ba+3689Kr+301n

The disintegration energy Q for the nuclear fission of 235U 140Ce + 94Zr + n is MeV. Given atomic masses of 235U : 235.0439 u; 140Ce : 139.9054 u, 94Zr : 93.9063 u; n : 1.0086 u, Value of c2 = 931 MeV/u.

The radius of a nucleus of mass number 64 is 4.8 fermi. Then the mass number of another nucleus having radius of 4 fermi is 1000x, where x is .

From the statements given below : Choose the correct answer from the options given below :

1. (B), (C), (D), (E) only
2. (A), (C), (D), (E) only
3. (A), (B), (C), (E) only
4. (A), (B), (C), (D) only

The mass defect in a particular reaction is 0.4 g. The amount of energy liberated is n 107 kWh, where n= . (speed of light =3 108 m/s)

The mass number of nucleus having radius equal to half of the radius of nucleus with mass number 192 is :

1. 32
2. 24
3. 20
4. 40