Assertion :Statement- I : CuFeS_{ 2 } is concentrated by froath fl | Filo
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Class 12

Chemistry

Metallurgy

General Principles and Processes of Isolation of Elements

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Assertion :Statement- I : is concentrated by froath floatation method.
Reason :Statement- II : is main ore of copper.

  1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  3. Assertion is correct but Reason is incorrect
  4. Both Assertion and Reason are incorrect
Correct Answer: Option(b)
Solution:
 The process is best suitable for sulphide ores. The process is based on different wetting characteristics of the ore and gangue particles with water and pine oil. The ore is wetted by oil and impurities are wetted by water. Ore particles are adsorbed on potassiumor sodium ethyl xanthate (as collector) and come at the surface along with the froth. Froth stabiliser (cresols, aniline) stabilise the froth.  So sulphide ore of copper can be conc. by froth floatation process.
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general principles and processes of isolation of elements
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