UPSC General Studies Solved Paper - General Studies-2011

  • question_answer
    Microbial fuel cells are considered a source of sustainable energy. Why?
    1. They use living organisms as catalysts to generate electricity from certain substrates.
    2. They use a variety of inorganic materials as substrates.
    3. They can be installed in wastewater treatment plants to cleanse water and produce electricity.
    Which of the statement(s) given above is/are correct?

    A)  Only 1             

    B)  2 and 3    

    C)  1 and 3           

    D)  All of these

    Correct Answer: D

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