| 1 |
"Atoms" means _________ |
- A. Divisible
- B. Indivisible
- C. Break
- D. Nil
|
| 2 |
The lowest energy level is |
|
| 3 |
Who discovered the proton?<br> |
- A. Goldstein<br>
- B. J.J Thomson<br>
- C. Neil Bohr <br>
- D. Ruther Ford<br>
|
| 4 |
Canal rays are actually |
- A. Electrons
- B. Protons
- C. Neutrons
- D. X-rays
|
| 5 |
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>
|
| 6 |
Energy of a shell is ________________ |
- A. Variable
- B. Constant
- C. Cannot be changed
- D. Nil
|
| 7 |
___________ is used in treatment of cancer. |
- A. Cobalt-60
- B. C-12
- C. H-3
- D. Nil
|
| 8 |
Neuron was discovered by |
- A. Sir Willium Crooks
- B. Goldstein
- C. James Chadwik
- D. Neil Bohr
|
| 9 |
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>
|
| 10 |
Which of the following result in discovery of proton?<br> |
- A. cathode rays<br>
- B. canal rays <br>
- C. x-rays <br>
- D. alpha rays<br>
|