| 1 |
Alpha particles are double charged. |
- A. Negative
- B. Positive
- C. Can be both
- D. Nil
|
| 2 |
"Atoms" means _________ |
- A. Divisible
- B. Indivisible
- C. Break
- D. Nil
|
| 3 |
Deuterium is used to make:<br> |
- A. light water <br>
- B. heavy water<br>
- C. soft water<br>
- D. hard water<br>
|
| 4 |
In ________________ Bohr considered hydrogen atom for his model . |
- A. 1913
- B. 1916
- C. 1917
- D. 1918
|
| 5 |
The no.of neutrons in deutrium is |
|
| 6 |
Which one of the following is the most penetrating?<br> |
- A. protons <br>
- B. electrons <br>
- C. neutrons<br>
- D. alpha paticles<br>
|
| 7 |
________________ proposed that matter is composed of small particles. |
- A. Greek
- B. English's
- C. Russian
- D. Nil
|
| 8 |
The p subshell has:<br> |
- A. one orbital <br>
- B. two orbitals <br>
- C. three orbitals <br>
- D. four orbitals<br>
|
| 9 |
In 9th century scientist accepted by: |
- A. Dalton
- B. Bohars
- C. Rutherford
- D. Nil
|
| 10 |
Energy of a shell is ________________ |
- A. Variable
- B. Constant
- C. Cannot be changed
- D. Nil
|