1. If a refrigerator’s door is kept open, the –
2. Which among of the following is a types of electroplating —
3. Which of the following metals is not attacked by the environment?
4. Use of electrolysis—
5. Iron rusts in the presence of—
6. Which of the following is a homogeneous system?
7. Which of the following is not a colloid?
8. Medicines are more effective, if they are used in—
9. Smoke is an example of—
10. The formation of colloid from suspension is-