alleryIn a smelting furnace, which layer floats over the heavier matte?
- Fuel bed
- Ore layer
- Molten slag
- Copper metal
Show answer and solution
Correct answer: C. Molten slag
The slag floats above the heavier sulfide matte in the furnace.
ICSE Class 10 Metallurgy — practice questions — page 3
Explore 68 free Metallurgy questions in ICSE Class 10 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 61–68 of 68.
In a smelting furnace, which layer floats over the heavier matte?Read the answer and worked solution →What is a complex ore?Read the answer and worked solution →Why is ore ground before froth flotation?Read the answer and worked solution →What do air bubbles do in a flotation cell?Read the answer and worked solution →Which substance is identified as a collector for galena flotation?Read the answer and worked solution →After copper smelting, what product can undergo electrorefining?Read the answer and worked solution →What is the role of electrorefining in copper production?Read the answer and worked solution →Which metal is used in aluminothermic reduction of some metal oxides?Read the answer and worked solution →
Worked practice questions
What is a complex ore?
- Contains a single metal mineral
- Contains several valuable minerals
- Contains no gangue material
- Contains only a pure metal
Show answer and solution
Correct answer: B. Contains several valuable minerals
A complex ore contains more than one valuable mineral.
Why is ore ground before froth flotation?
- Create a chemical flux
- Oxidize the sulfide ore
- Free mineral from gangue
- Evaporate metal from ore
Show answer and solution
Correct answer: C. Free mineral from gangue
Grinding helps free individual mineral particles from the gangue.
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