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प्रश्न
The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y, respectively, are:
विकल्प
washer woman and concentration
fisher woman and concentration
washer man and reduction
fisher man and reduction
MCQ
रिक्त स्थान भरें
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उत्तर
Washer woman and concentration
Explanation:
The froth flotation method for the concentration of sulphide ores was inspired by the observation of a washer woman, who noticed that dirt and heavier particles sink while lighter greasy particles float on water. Similarly, in this process, sulphide ore particles stick to the froth and float, while the gangue particles sink.
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