NEET Chemistry General Principles And Processes Of Isolation Of Elements MCQs

    Prepare for NEET Chemistry Isolation Of Elements with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert explanations of extraction processes.

    NEET Questions / Chemistry / General Principles And Processes Of Isolation Of Elements

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    Introduction
    Concentration Methods Of Ores
    Extraction Of Crude Metal
    Refining
    Ellingham Diagram
    Extraction Of Some Metals
    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

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :1.5 mins
    πŸ”„Ncert Concepts :Concentration Methods of Ores, Froth Flotation, Collectors
    2.

    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

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Hard
    ⚑ Time Required :1.5 mins
    πŸ”„Ncert Concepts :Concentration Methods of Ores, Leaching, Gold Extraction
    3.

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

    A

    Bauxite

    B

    Copper pyrites

    C

    Galena

    D

    Cinnabar

    Question Tags

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Concentration Methods of Ores, Roasting, Magnetic Separation
    4.

    In the Mond process for refining nickel, the volatile intermediate formed is:

    A

    Ni(CO)4Ni(CO)_4

    B

    Ni(CO)6Ni(CO)_6

    C

    Ni2(CO)4Ni_2(CO)_4

    D

    Ni(CO)2Ni(CO)_2

    Question Tags

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Concentration Methods of Ores, Refining, Mond Process
    5.

    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

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Concentration Methods of Ores, Magnetic Separation
    6.

    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

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Concentration Methods Of Ores
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Concentration Methods of Ores, Froth Flotation, Collectors
    7.

    Consider the Ellingham diagram. Which metal oxide among the following can be reduced by coke at a temperature of 1500 K but not at 1200 K?

    A

    MgO

    B

    Alβ‚‚O₃

    C

    ZnO

    D

    FeO

    Question Tags

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Ellingham Diagram
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Hard
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :Ellingham Diagram, Thermodynamics, Metallurgy
    8.

    The Ellingham diagram for the formation of metal oxides shows a sudden increase in the slope for some metals. This is primarily due to:

    A

    Melting of the metal

    B

    Boiling of the metal

    C

    Phase transition of the metal

    D

    Formation of a non-stoichiometric oxide

    Question Tags

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Ellingham Diagram
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Ellingham Diagram, Thermodynamics, Phase Transitions
    9.

    Which of the following statements is INCORRECT regarding the Ellingham diagram?

    A

    The Ellingham diagram plots Gibbs free energy change as a function of temperature.

    B

    The Ellingham diagram assumes all reactants and products are in their standard states.

    C

    The Ellingham diagram can be used to determine the rate of a reaction.

    D

    The slope of the lines in the Ellingham diagram is determined by the entropy change of the reaction.

    Question Tags

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Ellingham Diagram
    πŸŽ“ Ncert Level:Evaluating
    🎯Difficulty :Hard
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Ellingham Diagram, Thermodynamics
    10.

    Why does the Ξ”G\Delta G vs. T curve for the formation of CO2CO_2 from COCO have a negative slope in the Ellingham diagram?

    A

    Increase in entropy due to increase in gaseous moles.

    B

    Decrease in entropy due to decrease in gaseous moles.

    C

    Constant entropy as gaseous moles remain the same.

    D

    The reaction is exothermic.

    Question Tags

    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:General Principles And Processes Of Isolation Of Elements
    🎯Topic:Ellingham Diagram
    πŸŽ“ Ncert Level:Analyzing
    🎯Difficulty :Hard
    ⚑ Time Required :3 mins
    πŸ”„Ncert Concepts :Ellingham Diagram, Thermodynamics, Entropy

    Showing 1 to 10 of 137 entries

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