| 1 |
The building blocks of protons and neutrons are called. |
- A. Ions
- B. Electrons
- C. Positrons
- D. quarks
|
| 2 |
The background radiation to which we are exposed, on the average is. |
- A. 1 mSv per year
- B. 2 mSv per year
- C. 3 mSv per year
- D. 4 mSv per year
|
| 3 |
The charge on Beta particle is |
- A. +e
- B. -e
- C. -2e
- D. None of these
|
| 4 |
Circulation of blood is studied by radio isotope. |
- A. Cobalt -60
- B. Phosphorus -32
- C. Sodium -24
- D. Iodine -131
|
| 5 |
The moderator used in a nuclear reactor |
- A. Sodium
- B. Uranium
- C. Graphite
- D. Cadmium
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| 6 |
The binding energy per nucleon is maximum for |
- A. Helium
- B. Iron
- C. Potassium
- D. Radium
|
| 7 |
The mass of protons is: |
- A. 1.675 x 10<sup>-27</sup> kg
- B. 1.693 x 10<sup>-27</sup> kg
- C. 1.673 x 10<sup>-31</sup> kg
- D. 1.673 x 10<sup>-27</sup> kg
|
| 8 |
Cobalt -60 is the source for |
- A. Alpha rays
- B. Gama rays
- C. Beta rays
- D. Neutron
|
| 9 |
amu = |
- A. 1.06 x 10<sup>-27</sup> kg
- B. 1.6606 x 10<sup>-27</sup> kg
- C. 1.520 x 10<sup>-21</sup> kg
- D. 1.6606 x 10<sup>-31</sup> kg
|
| 10 |
Materials can be identified by measuring their |
- A. Mass
- B. Half life
- C. Both a and b
- D. None of a,b,c
|