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P - Block Eleme...

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  • Question 1
    4 / -1

    The purification method of bauxite containing iron oxide as impurity is known as

  • Question 2
    4 / -1

    Aluminothermy used for on the spot welding of large iron structures is based upon the fact that

  • Question 3
    4 / -1

    Al2O3 formation involves evolution of a large quantity of heat which makes its use in

  • Question 4
    4 / -1

    Which of the following is used in high temperature thermometry?

  • Question 5
    4 / -1

    In the Hoope’s process, for refining of aluminum, the fused materials form three different layers and they remain separated during electrolysis also.This is because

  • Question 6
    4 / -1

    In the commercial electrochemical process for Al extraction, the electrolyte used is

  • Question 7
    4 / -1

    The metal ion M3+ loses 3 electrons. Its oxidation number will be

  • Question 8
    4 / -1

    Electrolytic reduction of alumina to aluminium by Hall- Heroult process is carried out

  • Question 9
    4 / -1

    Alumininum reacts with dil. HCl and conc. NaOH solution to liberate the gases respectively

  • Question 10
    4 / -1

    Which of the following is known as pseudo alum?

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