1.

    A complex sulfide ore containing PbS, ZnS, and FeS is subjected to froth flotation. Sodium ethyl xanthate is used as a collector. Which metal sulfide will be preferentially concentrated in the froth?

    A

    ZnS

    B

    PbS

    C

    FeS

    D

    All equally

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Concentration Methods of Ores, Froth Flotation, Collectors

    Related Questions

    1.

    Which of the following concentration methods is employed for Sulphide ores?

    A

    Froth Flotation

    B

    Magnetic Separation

    C

    Leaching

    D

    Gravity Separation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Application
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Concentration of Ores, Froth Flotation, Sulphide Ores

    2.

    Which method is used for concentrating sulphide ores?

    A

    Froth flotation

    B

    Magnetic separation

    C

    Leaching

    D

    Gravity separation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Concentration of ores, Froth flotation, Sulphide ores

    3.

    Which method is MOST suitable for concentrating an ore containing cassiterite (SnO2) contaminated with wolframite (FeWO4)?

    A

    Froth flotation

    B

    Magnetic separation

    C

    Handpicking

    D

    Gravity separation

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Concentration Methods of Ores, Magnetic Separation

    4.

    In the leaching of gold with cyanide, the role of oxygen is BEST described as:

    A

    Reducing agent, converting gold ions to metallic gold.

    B

    Complexing agent, directly forming a soluble gold complex.

    C

    Oxidizing agent, facilitating the formation of a soluble gold complex.

    D

    Catalyst, speeding up the dissolution process without being consumed.

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Understanding
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Concentration Methods of Ores, Leaching, Gold Extraction

    5.

    A complex sulfide ore containing PbS, ZnS, and FeS is subjected to froth flotation. Sodium ethyl xanthate is used as a collector. Which metal sulfide will be preferentially concentrated in the froth?

    A

    ZnS

    B

    PbS

    C

    FeS

    D

    All equally

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Concentration Methods of Ores, Froth Flotation, Collectors

    6.

    Leaching is a preferred method for concentrating ores rich in:

    A

    Aluminum

    B

    Iron

    C

    Zinc

    D

    Lead

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Leaching, Bauxite, Aluminum Extraction

    7.

    Which among the following is a carbonate ore ?

    A

    Corundum

    B

    Copper glance

    C

    Siderite

    D

    Magnetite

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :carbonate ores, mineralogy

    8.

    Which among the following is an oxide ore of metal?

    A

    Zincite

    B

    Sphalerite

    C

    Calamine

    D

    Copper glance

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Oxide ores, mineralogy, metal extraction

    9.

    Which of the following ores is concentrated using magnetic separation after roasting?

    A

    Bauxite

    B

    Copper pyrites

    C

    Galena

    D

    Cinnabar

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Concentration Methods of Ores, Roasting, Magnetic Separation

    10.

    The process of removing gangue from zinc blende by preferential wetting with pine oil and water is known as:

    A

    Leaching

    B

    Liquation

    C

    Froth flotation

    D

    Calcination

    Question Tags
    📚 Subject:Chemistry
    📑 Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    🎓 Ncert Level:Remembering
    🎯Difficulty :Hard
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Concentration Methods of Ores, Froth Flotation, Collectors

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