| 1 |
The lowest energy level is |
|
| 2 |
The boiling point of H2O is: |
- A. 100
- B. 12
- C. 1.105
- D. 9
|
| 3 |
Neuron was discovered by |
- A. Sir Willium Crooks
- B. Goldstein
- C. James Chadwik
- D. Neil Bohr
|
| 4 |
___________ is used in treatment of cancer. |
- A. Nil
- B. Cobalt-60
- C. C-12
- D. H-3
|
| 5 |
Which one of the following shell consists of three subshells?<br> |
- A. K- shell<br>
- B. M-Shell <br>
- C. L-shell<br>
- D. M-shell<br>
|
| 6 |
In ________________ Rutherford's was studying radiations. |
- A. 1911
- B. 1931
- C. 1921
- D. 1922
|
| 7 |
L shell can accommodate ________________ electrons. |
|
| 8 |
Electron ________________ energy when they jump from low to higher level. |
- A. Absorb
- B. Radiate
- C. Nothing
- D. Nil
|
| 9 |
The value of Planck's constant is |
- A. 6.63 x 10-34 Js
- B. 6.63 x 10-32 Js
- C. 6.63 x 10-30 Js
- D. 6.63 x 10-28 Js
|
| 10 |
Which radioisotope is used for the diagnosis of tumor in the body?<br> |
- A. cobalt-60<br>
- B. iodine-131<br>
- C. strontium-90<br>
- D. phosphorus-30<br>
|
