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  1. Lignite is a type of:

  2. A.

     Iron

    B.

     Steel

    C.

     Coal

    D.

     Gold

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    Answer : Option C

    Explanation :

    Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It is considered the lowest rank of coal due to its relatively low heat content. It has a carbon content around 60–70 percent.


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