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Materials Metals and Non Metals Test - 1

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Materials Metals and Non Metals Test - 1
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  • Question 1
    1 / -0

    Gold : metal :: Silicon : _____

    Solution

    Explanation:

    Gold is metal and Silicon is a metalloid. Those elements that shows the property of both metal and non-metal are called metalloid.

     

     

  • Question 2
    1 / -0

    Metals are solid except :

    Solution

    Explanation:

    All metals are found in solid state at normal room temperature except mercury, which is liquid at room temperature.

     

     

  • Question 3
    1 / -0

    Metalloids are also known as :

    Solution

    Explanation:

    Those elements that show the property of both metal and non-metal are called metalloid or semi metals. Silicon, germanium etc are common metalloid.

     

     

  • Question 4
    1 / -0

    Metals that react with both acids and bases are called:

    Solution

    Explanation:

    Metals that reacts with both acids and bases are called amphoteric. Amphoteric oxides are acidic as well as basic in nature.e.g zinc oxide

     

     

  • Question 5
    1 / -0

    Non metals occur as:

    Solution

    Explanation:

    Non-metals are found in nature in solid, liquid and gaseous state. On the other hand metals are found in solid state except mercury that is liquid at room temperature.

     

     

  • Question 6
    1 / -0

    A metal is characterised by :

    Solution

    Explanation:

    Metal conduct electricity because they contain free electron which can move through the metal and conduct electric current.

     

     

  • Question 7
    1 / -0

    Rust formation is called :

    Solution

    Explanation:

    Formation of rust on metal surface like iron is also called as corrosion. Corrosion occurs in presence of water and oxygen.

     

     

  • Question 8
    1 / -0

    Metals are :

    Solution

    Explanation:

    Metals are electropositive because metals contain 1,2 or 3 electron in outermost shell and have a tendency to lose electron and form cation .Metals form electrovalent bond by loosing electron and become electropositive.

     

     

  • Question 9
    1 / -0

    Non metal that conducts electricity is :

    Solution

    Explanation:

    Non-metal are generally bad conductor of electricity but Graphite is an allotropes of carbon that is good conductor of electricity.

     

     

  • Question 10
    1 / -0

    Mineral is :

    Solution

    Explanation:

    Mineral is a naturally occurring material obtained from earth crust. Mineral contain one or more element.

     

     

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