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How does laser carbon reduce the overpotential of the oxygen evolution reaction?

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in UPSC Prelims Challenge by (4.9k points)
  1. By increasing the voltage at which the OER takes place
  2.  By decreasing the voltage at which the OER takes place
  3.  By increasing the energy consumed in the OER
  4.  By decreasing the energy consumed in the OER

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Answer: (2) By decreasing the voltage at which the OER takes place

Explanation: The article explains that laser carbon intervenes by reducing the OER overpotential, which is the difference between the voltage at which the OER takes place in reality and the minimum voltage at which it can take place.

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