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Aluminium is obtained by:

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Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)

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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 31
Which of the following metals cannot be extracted by using Al as a reducing agent?
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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 32
Calcination is the process of heating the ore
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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 34
There are following extraction process of silver but not:
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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 35
Which of the following is not an ore?
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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 36
In the pidgeon process, Mg is produced by:
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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 37
Which one of the following reactions is an example for calcination process?
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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 38

Identify the process to which the following reaction belongs:

Al2O3.2H2O+Na2CO3→2NaAlO2+2H2O+CO2

2NaAlO2+2H2O+CO2→50-60 °CAl2O3.2H2O+Na2CO3

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Beta Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>EXERCISE-1>Q 39
Formation of metallic copper from the sulphide ore in the normal thermo-metallurgical process essentially involves which one of the following reaction: