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  • Question 1
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    The salt which is least likely to be found in minerals is

  • Question 2
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    Match the following:

    List-I (Types of Ore) List-II (Examples)
    1. Oxide ore A. Feldspar
    2. Sulphide ore B. Barite
    3. Sulphate ore C. Fluorspar
    4. Halide ore D. Galena
    E. Corundum

  • Question 3
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    An ore has impurities which are lighter than the ore itself. Which of the following processes are used for the concentration of this ore?

    A. Froth flotation
    B. Gravity separation
    C. Leaching
    D. Hydraulic washing

  • Question 4
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    Boron (B) and Indium (In) used in semiconductors, are required to be of high purity and hence, purified by

  • Question 5
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    Which of the following ores is best concentrated by froth flotation method?

  • Question 6
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    Which of the following metals can be used as reducing agents in Goldschmidt thermite process?

    A. Barium
    B. Sodium
    C. Calcium
    D. Magnesium

  • Question 7
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    Which of the following ores is concentrated by chemical leaching method?

  • Question 8
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    Carbon dioxide gas is given off when limestone ore is heated. This process of metallurgy is known as

  • Question 9
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    Which of the following statements is correct regarding the slag obtained during extraction of a metal like copper or iron?

  • Question 10
    1 / -0

    Which of the following statements about the advantages of roasting of sulphide ore before reduction is not true?

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