| 1 |
All metals are solid at ________________ temperature. |
- A. Room
- B. High
- C. Low
- D. None
|
| 2 |
Which is an acceptor molecule/ion? |
- A. N<sub>2</sub>
- B. O<sub>2</sub>
- C. H<sup>+</sup>
- D. CH<sub>4</sub>
|
| 3 |
Deuterium is used to make:<br> |
- A. light water <br>
- B. heavy water<br>
- C. soft water<br>
- D. hard water<br>
|
| 4 |
Density of a gas increases, when its:<br> |
- A. temperature is increased <br>
- B. pressure is increased <br>
- C. volume is kept constant<br>
- D. none of these<br>
|
| 5 |
Gain of electrons in a reaction is called ____________reaction. |
- A. Oxidation
- B. Reduction
- C. Both
- D. Nil
|
| 6 |
The most common example of corrosion is:<br> |
- A. Chemical decay<br>
- B. Rusting of iron<br>
- C. Rusting of aluminum<br>
- D. Rusting of tin<br>
|
| 7 |
The example of solid solute in gas solvent is |
- A. butter
- B. Sugar in water
- C. Smoke in air
- D. Opals
|
| 8 |
1 atm = ? |
- A. 1 pascal
- B. 760 mm of Hg
- C. 1 atm
- D. 1 Nm<sup>-2</sup>
|
| 9 |
Who discovered the proton?<br> |
- A. Goldstein<br>
- B. J.J Thomson<br>
- C. Neil Bohr <br>
- D. Ruther Ford<br>
|
| 10 |
The lowest energy level is |
|
