Metallurgy Question paper Posted Date: 01 Nov 2009     Resource Type: Articles/Knowledge Sharing     Category: Education Author: Prabha Kishore Member Level: Gold     Rating: Points: 3

1st PU- Karnataka- TEST PAPER SUB: CHEMISTRY -METALLURGY Time – 1 hour Max Marks: 25 Date: Question carrying one mark (1X5) 1. What is mineral? 2. Name the chief ores of zinc. 3. What happens to lime stone on calcination ? 4. Which ore of Aluminum does not have oxygen? 5. Give an example for acidic flux. Question carrying two marks (2X6) 1. What is the difference between Roasting and Calcinations 2. How is MgCl2.6H20 made anhydrous? 3. Explain Hydrometallurgy with example. 4. How is Sulphide ore concentrated by oil floatation process? 5. What are the reactions that occur during smelting? 6. Write a note on Poling. Question carrying four marks (4X2) 1. How is zinc extracted from zinc blend? 2. How Magnesium is extracted from sea water? -------------------------------------------------------------------------

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