| 1 |
For diagnosis of goiter in thyroid gland we use |
- A. Co-60
- B. C-14
- C. I-131
- D. Sr-90
|
| 2 |
Hydrogen has ________________ isotopes. |
|
| 3 |
________________ proposed that matter is composed of small particles. |
- A. Greek
- B. English's
- C. Russian
- D. Nil
|
| 4 |
When U-235 breaks up, it produces?<br> |
- A. electrons <br>
- B. neutrons<br>
- C. protons <br>
- D. nothing<br>
|
| 5 |
Who discovered the proton?<br> |
- A. Goldstein<br>
- B. J.J Thomson<br>
- C. Neil Bohr <br>
- D. Ruther Ford<br>
|
| 6 |
The number of isotopes of carbon are |
|
| 7 |
The isotopes C-12 is present in abundance of:<br> |
- A. 96.6%
- B. 97.6%
- C. 99.7%
- D. None of these<br>
|
| 8 |
In 9th century scientist accepted by: |
- A. Dalton
- B. Bohars
- C. Rutherford
- D. Nil
|
| 9 |
First energy level is denoted by:<br> |
- A. K
- B. L <br>
- C. M <br>
- D. N
|
| 10 |
Alpha particles are double charged. |
- A. Negative
- B. Positive
- C. Can be both
- D. Nil
|