Absorption/scattering cross-section of an element is expressed in “barn”, which is equivalent to___________________?

Related Mcqs:

1. One ‘amu’ is equivalent to___________________?

   A. 9.31 MeV
   B. 931 eV
   C. 931 Mev
   D. 931 J

2. The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?

   A. A + Z
   B. A – Z
   C. A
   D. Z

3. The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ______________ gm?

   A. 1/4
   B. 1/8
   C. 1/2
   D. 1/16

4. Which is used as a coolant in nuclear reactor due to its high capture cross-section ?

   A. H2
   B. N2
   C. He
   D. CO2

5. Radioactivity of an isotope is expressed in______________________?

   A. Barn
   B. MeV
   C. Curie
   D. Ergs

6. 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

7. Thorium-232 (a fertile material) on absorption of a neutron gets converted into ___________ , which is a fissile material?

   A. Thorium-233
   B. Uranium-235
   C. Uranium-233
   D. Plutonium-239

8. Energy equivalent to one atomic mass unit (amu) is ______________ MeV?

   A. 9.31
   B. 93.1
   C. 931
   D. 9310

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

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

10. The atomic number of an element is equal to the number of ______________ present in its atom?

    A. Neutrons
    B. Electrons
    C. Protons
    D. Either B. or C.