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  • Question 1
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    Calamine is an ore of

  • Question 2
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    In blister copper, the blisters are formed due to passing out of

  • Question 3
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    For obtaining high purity metals, which of the following methods of refining is preferred?

  • Question 4
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    The second most abundant metal on earth’s crust is

  • Question 5
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    Which of the following chemical is used as a depressant in separating ZnS from PbS in froth floatation process?

  • Question 6
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    When the impurity is silica, which of the following can be used as flux?

  • Question 7
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    Percentage of carbon in cast iron is

  • Question 8
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    Which of the following substance can be used for drying gases?

  • Question 9
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    In blast furnace, the highest temperature is in

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