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Metals and Non-...

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  • Question 1
    1 / -0

    Cryolite is used in the electrolytic reduction of Alumina (Al2O3) to:

  • Question 2
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    Which of the following metal reacts neither with cold water nor with hot water but reacts with hot steam to produce hydrogen gas?

  • Question 3
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    Fountain experiment demonstrates:

  • Question 4
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    Statement A: All metals form basic oxides.

    Statement B: Few non metals form neutral oxides.

  • Question 5
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    An element belonging to 16th group of periodic table is used in the manufacturing of vulcanized rubber. This element reacts with hot and conc. HNO3 to form sulphuric acid. The concerned element is:

  • Question 6
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    Statement A: The electrical conductivity and melting point of an alloy is less than that of pure metals.

    Statement B: Different metals have same reactivity with water and dilute acids.

  • Question 7
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    Sulphide ores are concentrated by:

  • Question 8
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    In the electrolytic refining of copper, the impure metal is made the:

  • Question 9
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    What happens when ammonia reacts with hydrogen chloride? NH3 + HCl → ?

  • Question 10
    1 / -0

    HNO3 is a strong acid because:

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