12TH - CHEMISTRY QUESTION BANK UNIT 1

 

 

Chemistry vaathi Page 1
12TH - CHEMISTRY QUESTION BANK UNIT
1.METALLURGY
IMPORTANT QUESTIONS 2&3 MARKS
1.Differentiate between minerals and ore.(B/B-1) ****
2.Give the basis requirement for vapour phase refining(B/B-12) ****
3. Give the limitation of elingham diagram. (B/B-16) ****
4. Write notes on calcination with an example. (In.P.NO:7) ****
5. What is auto reduction ?(In.P.NO:10) ****
6. Explain refining of i) titanium by van-arkel method ii) nickel by mond’s process. (In.P.NO:16,17) ****
7. What are the main observation of Elingham diagram? (In.P.NO-12) ****
8. Explain concentration by magnetic separation with diagram. (In.P.NO-6) ****
9. Describe mond process for refining nickel. (In.P.NO-16)
10. Define the following terms i)Roasting ii)Calcination (In.p.no:6,7) ****
11. Write the uses of iron and zinc (In.P.NO-17,18)
12. List out the application of aluminium. (In.P.NO-17)
13. What is the role of limestone in the extraction of iron from its oxide Fe2O3 ? (B/B-3)
14. Explain the principle of electrolytic refining with an example.(B/B-14)
15. What are the various steps involved in extraction of pure metals from their ores ? (B/B-2)
16. Explain about cynide leaching .(In.P.NO:4)
17. What is meant by roasting ? give one example .(In.P.NO-6)
18. Explain the following terms with suitable examples. i) Gangue ii) Slag

 

 POOVARASAN M PG ASST IN CHEMISTRY