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General Princip...

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  • Question 1
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    At the time of extraction of ______, auto reduction takes place.

  • Question 2
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    Bessemer process is used in the production of

  • Question 3
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    Slag is represented by

  • Question 4
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    Which of the following statements is wrong?

  • Question 5
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    Aluminium, being an active metal, does not occur in free state. The substance used to decrease the melting point of alumina in Hall-Heroult method is

  • Question 6
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    Duralumin is an alloy of

  • Question 7
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    Copper-nickel alloy consisting of 55% copper and 45% nickel is called

  • Question 8
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    Highly reactive metals (like K, Na, Ca, Mg, Al) are extracted by

  • Question 9
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    Which of the following methods is the most suitable for refining non-ferrous metals?

  • Question 10
    1 / -0

    Bauxite is purified by using NaOH solution. The process involved is known as

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