The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about ______________ metres/second?

Related Mcqs:

1. Velocity of the thermal neutron (< 0.025 eV) used for fission of U-235 is around _____________ m/sec?

   A. 1
   B. 2200
   C. 3 × 1011
   D. 9 × 1021

2. The number of neutrons accompanying the formation of 54Xe139 and 38Sr94 from the absorption of a slow neutron by 92U235, followed by nuclear fission is __________________?

   A. 1
   B. 2
   C. 3
   D. 4

3. Thermal neutrons which are used to cause the fission of U-235 have energy _____________ eV?

   A. < 0.025
   B. > 1
   C. 1-25
   D. > 200

4. Heavy water used in the nuclear reactors to slow down the speed of neutrons is __________________?

   A. Highly purified water
   B. A compound of oxygen and deuterium
   C. Water having dissolved salts of heavy metals
   D. None of these

5. Critical energy should be _______________ the neutron binding energy of the atom in order to initiate a nuclear fission?

   A. Equal to
   B. Less than
   C. More than
   D. Either more or less

6. An element having large number of ______________ is most easily subjected to nuclear fission?

   A. Protons
   B. Electrons
   C. Neutrons
   D. Nucleons

7. Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is_______________?

   A. 3
   B. 235
   C. 200
   D. 92

8. Energy produced in the nuclear fission is of the order of _____________ MeV?

   A. 20
   B. 200
   C. 1000
   D. 2000

9. Which of the following accounts for the maximum energy release in the nuclear fission process ?

   A. Kinetic energy of fission products
   B. Radioactive decay of fission products
   C. Instantaneous release of γ-rays
   D. Kinetic energy of neutrons

10. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is ___________________?

    A. 1
    B. 0.5
    C. 2
    D. 4