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D and F Block Elements Test - 6
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D and F Block Elements Test - 6
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  • Question 1/5
    1 / -0

    Roasting or calcination is not an essential step to extract metal from this ore–

    Solutions

    Roasting or calcination is not an essential step for argentite since it converted into pure metal

  • Question 2/5
    1 / -0

    Purpose of coke in the blast furnace is

    Solutions

    In blast furnace,coke is used as a fuel as will as a reducing agent

  • Question 3/5
    1 / -0

    In zone refining, pure metal is obtained at the

    Solutions

    In zone refining, pure metal is obtained at the left end, if zone is travelling from left to right

  • Question 4/5
    1 / -0

    An alloy which does not contain copper is–

    Solutions

    Solder contains only Sn 67% Pb 33%

  • Question 5/5
    1 / -0

    The rock crushing machinery is made from this steel –

    Solutions

    Rock crushing machinery is made from manganese steel. Is is known for its high impact strength and resistance to abrasion once in its work-hardened state.

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