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Railways NTPC (Technical Ability) Refrigeration and Air-Conditioning Question Bank Refrigeration and Air-Conditioning

  • question_answer
    Which one eco-friendly refrigerant out of the following is used in many domestical and a air- conditioners now-a-days?

    A) \[R-22\]             

    B) \[R-113\]

    C) \[R-123\]                       

    D) \[R-134\]

    Correct Answer: D

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