Revision - Surface Chemistry & Metallurgy

Grade 12 Chemistry — Revision - Surface Chemistry & Metallurgy: 25 practice questions with instant scoring and explanations.

1. Adsorption is:
2. Physical adsorption heat is:
3. Freundlich equation x/m = kP^(1/n) is valid at:
4. Langmuir equation θ = kP/(1+kP) gives ___ layer:
5. BET isotherm shows:
6. Catalyst increases rate by:
7. Tyndall effect is due to:
8. Brownian motion is due to:
9. Electrophoresis separates based on:
10. Lyophilic colloids are:
11. Coagulation uses:
12. Oil-in-water emulsion has oil as:
13. Emulsifying agents are:
14. Micelle formation occurs when concentration exceeds:
15. Hardy-Schulze rule: coagulation depends on:
16. Ore concentration removes:
17. Gravity separation works when:
18. Froth flotation is used for:
19. Roasting is heating ore in:
20. Thermite reaction Al + Fe₂O₃ is:
21. Reduction of iron oxide uses:
22. Electrolytic refining purifies metals by:
23. Blast furnace produces:
24. Steel is made from pig iron by:
25. Corrosion of iron is reduced by: