First experimental observation of nuclear fission was done by ____________________?

Related Mcqs:

1. 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

2. The phenomenon of nuclear fission is opposite to that of__________________?

   A. Radioactive decay
   B. Thermionic emission
   C. Nuclear fusion
   D. Combustion

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

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

4. The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is_____________________?

   A. Less
   B. More
   C. Same
   D. Much more

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

   A. 1100
   B. 2200
   C. 3300
   D. 4400

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

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

7. 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

8. 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

9. 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

10. 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