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DeepanjaliEnlightened

Asked: August 6, 2021In: Chemistry

The common method of extraction of metals from oxide ores involves:

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A. Reduction with carbon B. Reduction with aluminium C. Reduction with hydrogen D. Electrolytic method

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DeepanjaliEnlightened

Asked: August 4, 2021In: Chemistry

The sandstone in some iron ores is removed by:

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A. Carbon filters B. Compressed air C. Limestone D. Sulphuric acid

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DeepanjaliEnlightened

Asked: August 4, 2021In: Chemistry

Fe ore is concentrated by:

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A. Magnetic treatment B. Froth floatation C. Electrolysis D. Roasting

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DeepanjaliEnlightened

Asked: August 4, 2021In: Chemistry

An important Zn ore is________.

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A. Calamine B. Pitch blende C. Cryolite D. None

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DeepanjaliEnlightened

Asked: August 3, 2021In: Chemistry

The process of removal of gangue particles from ores is known as:

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A. Concentration B. Refining C. Smelting D. None of these