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

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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 12
An ore after levigation is found to have basic purities. Which of the following can be used as a flux during smelting?
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 15
Which one of the following metals cannot be extracted by carbon reduction? ?
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 16
Among the following groups of oxides, the group that cannot be reduced by carbon to give the respective metals.
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 17
The process of bringing the metal or its ore into solution by the action of a suitable chemical reagent followed by extraction of the metal either by electrolysis or by a suitable precipitating agent i.e. more electropositive metal is called:
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 18
The function of Cryolite, in extraction of aluminium is :
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 19
In the extraction of Cu the reaction takes place in Bessemer converter is:
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 20
Which of the following statement is incorrect about the extractive metallurgy of copper?
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-4>Q 21
Van Arkel method of purification of metals involves converting the metal to :