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ICSE-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) (VERY SHORT ANSWER QUESTIONS)
- Which metals are expected to occur in the native state?
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- List three main steps in the extraction of a metal from its ores.
02:45
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- What is ore dressing?
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- Which ores are concentrated by levigation washing ?
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- Name an ore each of iron and zinc.
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- What is the composition of the following ores: (i) Bauxite (ii) Mal...
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- Which types of ores are concentrated by magnetic separation method ?
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- Name the sulfide ores of lead, copper and silver.
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- Name the principal ore of mercury and write its formula.
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- Name the oxide ores of iron, zinc, aluminium and manganese.
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- What is meant by froth stabilizers?
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- What is a depressant ? Give one example.
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- What is calcination ?
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- What is roasting?
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- What types of ores are roasted ?
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- What is flux? How is it useful ?
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- What is slag?
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- Give one main difference between calcination and roasting?
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- When an acidic flux is used ?
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- When a basic flux is used ?
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