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  • Question 1
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    Silk moth feed on:

  • Question 2
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    Sulfide ores are usually dressed by the _____ process.

  • Question 3
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    Which of the following chemical reaction correctly shows Aqua-regia dissolving in gold?

  • Question 4
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    During concentration of _____ ores by froth floatation process potassium ethyl xanthate is added.

  • Question 5
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    The oil used in the froth floatation method for the purification of ore is _________.

  • Question 6
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    Which oil is used as frother in froth floatation process?

  • Question 7
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    The diagram shows the sketch of an electrolytic cell used in the extraction of aluminium. At which electrode (A or B) is the aluminium formed?

  • Question 8
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    The diagram shows the sketch of an electrolytic cell used in the extraction of aluminium. What are the two aluminium compounds present in the electrolyte C?

  • Question 9
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    The substance added in water in the froth floatation process is

  • Question 10
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    Silicon is the main constituent of _______.

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