Occurance and Extraction of Metals — Important Questions
Telangana Open School (TOSS) · Class 12 · Chemistry
51 important questions from Occurance and Extraction of Metals for Telangana Open School (TOSS) Class 12 Chemistry, with answers.
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Important Questions from Occurance and Extraction of Metals
What is the rocky impurity present in an ore called?
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Gangue,Matrix
Gangue or matrix refers to the unwanted rocky impurities in an ore.
Which of the following is a sulphide ore?
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Galena
Galena (PbS) is a sulphide ore of lead.
Which process is used to remove gangue from powdered ore?
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Concentration
Concentration or dressing of the ore removes gangue from powdered ore.
Gravity separation is used for which type of ores?
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Oxide ores
Gravity separation is used for heavier oxide ores like haematite and tinstone.
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