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Metals and Non-...

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  • Question 1
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    Match the following with the correct response:

    (1) Most reactive (A) Copper
    (2) Least reactive (B) Potassium
    (3) Metal less reactive than hydrogen (C) Bromine
    (4) Non-metal (D) Gold

  • Question 2
    1 / -0

    Match the following with the correct response:

    (1) Magnetic separation (A) Difference in density
    (2) Froth floatation (B) Sulphide ore
    (3) Leaching (C) Iron ore
    (4) Gravity method (D) Aluminium ore

  • Question 3
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    Match the following with the correct response:

     (1) Electrolytic reduction  (A) Sodium
     (2) Electrolytic refining  (B) Zinc
     (3) Reduction with carbon  (C) Impure copper
     (4) Reduction with aluminium  (D) Chromium

  • Question 4
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    Match the following with the correct response:

     (1) Metal  (A) Acidic oxides
     (2) Non-metal  (B) Neutral
     (3) Amphoteric  (C) Both acidic and basic oxides
     (4) Salts  (D) Basic oxides

  • Question 5
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    What happen when calcium is treated with water?
    A. It does not react with water.
    B. It reacts violently with water.
    C. It reacts less violently with water.
    D. Bubbles of hydrogen gas formed during the reaction stick to the surface of calcium.

  • Question 6
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    Which of the following metals are obtained by electrolysis of their chlorides in molten state?
    A. Na
    B. Ca
    C. Fe
    D. Cu

  • Question 7
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    Which of the following property is generally shown by metals?
    A. Electrical conduction
    B. Sonorous in nature
    C. Dullness
    D. Ductility

  • Question 8
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    Which of the following has electrovalent bond(s)?
    A. CaF
    B. NaCl
    C. MgO
    D. CO2

  • Question 9
    1 / -0

    Which oxide will turn blue litmus solution to red?
    A. SO2
    B. MgO
    C. Na2O
    D. NO2

  • Question 10
    1 / -0

    Metals are alloyed to:
    A. Decrease hardness.
    B. Lower melting point.
    C. Decrease resistance towards corrosion.
    D. Increase tensile strength.

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