| 1 |
I amu = |
- A. 9.31 MeV
- B. 931 MeV
- C. 9.031 MeV
- D. None of above
|
| 2 |
When gama rays are emitted, the nuclear mass. |
- A. Decreases by 4 units
- B. Does not change
- C. Increases by 2 units
- D. Increase by 1 unit
|
| 3 |
Mass of meason is |
- A. Greater then proton
- B. Less than proton
- C. Equal to proton
- D. Equal to neutron
|
| 4 |
Binding energy per nucleus for uranium is above: |
- A. 6.7 Mev
- B. 7.7 Mev
- C. 6.9 MeV
- D. 7.9 MeV
|
| 5 |
The moderator used in a nuclear reactor |
- A. Sodium
- B. Uranium
- C. Graphite
- D. Cadmium
|
| 6 |
There is no charge in A and Z of any radioactive element by the emission of. |
- A. Alpha particle
- B. Beta particle
- C. Gama particle
- D. X- rays
|
| 7 |
The potential difference between the top and bottom of a cloud chamber is of the order of |
- A. 290 v
- B. 400 v
- C. 1 kv
- D. None of above
|
| 8 |
When a nucleus emits an alpha particle, its atomic mass decreases by |
|
| 9 |
James chadwick discovered: |
- A. Proton
- B. Positron
- C. Neutron
- D. Electron
|
| 10 |
Subatomic particles are divided into groups. |
- A. Photon
- B. Laptons
- C. Hadrons
- D. All of these
|