| 1 |
The flame develope during combustion reaction is called. |
- A. Decaying
- B. Burning
- C. Rusting
- D. Melting
|
| 2 |
The changes of water into water vapours with out boilig is called. |
- A. Melting
- B. Boiling
- C. Freezing
- D. Evaporation
|
| 3 |
What type of change is it when mtal expand on heating. |
- A. Permanent
- B. Chemical
- C. Physical
- D. Temporary
|
| 4 |
Matters have............... physical states. |
- A. Two
- B. Three
- C. Four
- D. Five
|
| 5 |
Out of these which answer is correct. |
- A. 1 and 2
- B. 3 and 1
- C. 2 and 3
- D. 1 and 4
|
| 6 |
Wet clothes dry out. |
- A. Due to melting
- B. Due to evaporation
- C. Due to boiling
- D. Due to freezing
|
| 7 |
In what way the state of matter changes. |
- A. Beating
- B. Cooling
- C. Cleaning
- D. Heating and cooling
|
| 8 |
The substance that dissolves in water in less quantity is called |
- A. Solvent
- B. Solute
- C. Mixture
- D. Concentrated
|
| 9 |
The change that occured on the irion due toaction of oxygen and water is called. |
- A. Burning
- B. Decaying
- C. Rusting
- D. Melting
|
| 10 |
The process during which solid becomes liqid is called. |
- A. Freezing
- B. Boling
- C. Melting
- D. Cooling
|
