2nd Class Science Rocks and Soil Question Bank Rock and Minerals

  • question_answer Which of these rocks are used in the given steam engines as fuel to produce energy?                

    A)  Slate                                    

    B)  Coal                     

    C)  Chalk                   

    D)         All of these

    Correct Answer: B

    Solution :

    Coal is a soft rock. It is used in steam engines as fuel.

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