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प्रश्न
State three objectives achieved during the roasting of ores.
थोडक्यात उत्तर
उत्तर
- It removes moisture from ores.
- It makes the ore porous and more reactive.
- It expels volatile impurities.
- It converts sulphide ores into oxides.
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
संबंधित प्रश्न
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
Which metal becomes black in the presence of hydrogen sulphide gas in air?
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Name one ore of sodium. Name the sodium compound present in this ore and write its chemical formula.
Name the electrode at which aluminium metal is produced.
Name the metal which is extracted from the ore called 'rock salt'.
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painting electric and telegraphic poles
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- Cu
- Au
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- Ag
Give the reaction involved during extraction of zinc from its ore by
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- calcination of zinc ore
