Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem New 2152107 Extraction Of Non Ferrous Metals Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? V (New) EXAMINATION ? WINTER 2019
Subject Code: 2152107 Date: 21/11/2019
Subject Name: Extraction of Non Ferrous Metals
Time: 10:30 AM TO 01:00 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) Enlist the aluminum, lead and copper industries in India. 03
(b) Describe SWOT analysis of Indian nonferrous metal industries. 04
(c) Discuss about the production and consumption of various non-
ferrous metals in India.
07
Q.2 (a) What are the important ores of aluminum? Give their chemical
formulae.
03
(b) Explain why does the ALCOA process consume less energy than
the Hall-H?roult process?
04
(c) Discuss Bayer process for alumina production and give the flow
sheet.
07
OR
(c) Explain various factors governing fused salt electrolysis of
alumina.
07
Q.3 (a) What is blister copper? Name the elements present in it as
impurities.
03
(b) Explain the TOOTH process for Aluminum production. 04
(c) Discuss the chemistry of copper smelting. Explain any of the flash
smelting techniques with the help of a sketch. Give its advantages
and limitations of over other processes.
07
OR
Q.3 (a) Mention the relationship between slag losses and matte grades in
copper smelting operation.
03
(b) Write brief on ALCAN process. 04
(c) Explain Mitsubishi process for Copper production. 07
Q.4 (a) Explain how electrolytic refining of tin is carried out. 03
(b) Can Si alone be used as a reducing agent in Pidgeon process?
Justify your answer.
04
(c) Explain the scheme of operations in the hydrometallurgical
extraction of zinc.
07
OR
Q.4 (a) Why MgCO3 cannot be used for the Pidgeon process? 03
(b) Why is scrap iron used in lead blast furnace? Discuss. 04
(c) Furnish a flow sheet for obtaining nickel from its sulphide ore
with relevant process details.
07
Q.5 (a) Explain the carbonyl process for refining of nickel. 03
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? V (New) EXAMINATION ? WINTER 2019
Subject Code: 2152107 Date: 21/11/2019
Subject Name: Extraction of Non Ferrous Metals
Time: 10:30 AM TO 01:00 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) Enlist the aluminum, lead and copper industries in India. 03
(b) Describe SWOT analysis of Indian nonferrous metal industries. 04
(c) Discuss about the production and consumption of various non-
ferrous metals in India.
07
Q.2 (a) What are the important ores of aluminum? Give their chemical
formulae.
03
(b) Explain why does the ALCOA process consume less energy than
the Hall-H?roult process?
04
(c) Discuss Bayer process for alumina production and give the flow
sheet.
07
OR
(c) Explain various factors governing fused salt electrolysis of
alumina.
07
Q.3 (a) What is blister copper? Name the elements present in it as
impurities.
03
(b) Explain the TOOTH process for Aluminum production. 04
(c) Discuss the chemistry of copper smelting. Explain any of the flash
smelting techniques with the help of a sketch. Give its advantages
and limitations of over other processes.
07
OR
Q.3 (a) Mention the relationship between slag losses and matte grades in
copper smelting operation.
03
(b) Write brief on ALCAN process. 04
(c) Explain Mitsubishi process for Copper production. 07
Q.4 (a) Explain how electrolytic refining of tin is carried out. 03
(b) Can Si alone be used as a reducing agent in Pidgeon process?
Justify your answer.
04
(c) Explain the scheme of operations in the hydrometallurgical
extraction of zinc.
07
OR
Q.4 (a) Why MgCO3 cannot be used for the Pidgeon process? 03
(b) Why is scrap iron used in lead blast furnace? Discuss. 04
(c) Furnish a flow sheet for obtaining nickel from its sulphide ore
with relevant process details.
07
Q.5 (a) Explain the carbonyl process for refining of nickel. 03
2
(b) What is byproduct in any metallurgical extraction? Give two
examples.
04
(c) Discuss the amalgamation and chlorination process for gold
extraction.
07
OR
Q.5 (a) Give the ores of nickel with their chemical formula. 03
(b) Differentiate between reverberatory furnace smelting and rotary
furnace smelting process for tin extraction.
04
(c) Write a note on occurrence of silver. Discuss the Parke?s process
for silver recovery from lead.
07
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This post was last modified on 20 February 2020