Download GTU BE/B.Tech 2018 Winter 4th Sem New 2142102 Principles Of Extractive Metallurgy Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2142102 Principles Of Extractive Metallurgy Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code:2142102 Date:05/12/2018

Subject Name:Principles of Extractive Metallurgy

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

******************

MARKS

Q.1 (a) Draw basic flow diagram of Extractive metallurgy including all processes. 03
(b) What are merits and demerits of Pyro metallurgical processes 04
(c) List out Pyro metallurgical process. Explain roasting. 07
Q.2 (a) Draw flow sheet for production of Iron and Steel. 03
(b) What is hydrometallurgy? Write merit and demerits of Hydro metallurgy. 04
(c) Explain Ellingham diagram for oxide system. 07
OR
(c) Describe the microbial leaching. 07
Q.3 (a) Explain in brief Fire Refining processes. 03
(b) Explain in brief about Solvent Extraction process. 04
(c) Explain smelting. Differentiate between Matte smelting and Reduction
smelting processes
07
OR
Q.3 (a) Draw a simple flow sheet for extraction of Aluminum from bauxite ore. 03
(b) Write in detail about ion exchange process. 04
(c) Define Leaching. Explain pressure leaching. 07
Q.4 (a) Draw flow sheet for production of Lead. 03
(b) Draw a neat flow sheet for extraction of copper from its sulphide ore. 04
(c) Differentiate between electro-winning and electro-refining. 07

OR
Q.4 (a) What is heterogeneous and homogenous reaction? 03
(b) Draw flow sheet of extraction of Zinc. 04
(c) Explain Collision Theory of reaction kinetics 07
Q.5 (a) Derive equation for half life period of first order reaction 03
(b) Derive Arrhenius Equation 04
(c) Differentiate between Order of reactions and Molecularity. 07
OR

Q.5 (a) Write note on fuse salt electrolysis. 03
(b) What is percolation leaching? List out advantage of it. 04
(c) Differentiate between palletizing and sintering. 07
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