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      Question

      The base of an electric iron is brightly polished mainly

      -
      A to make it smooth and frictionless Correct Answer Incorrect Answer
      B to make it rust-proof Correct Answer Incorrect Answer
      C to reduce heat loss by radiation Correct Answer Incorrect Answer
      D to make it more durable Correct Answer Incorrect Answer

      Solution

      Polished surfaces are poor radiators of heat. So loss of heat on that account is reduced and the electric iron remains hotter than otherwise.

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