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CSS Solved Papers
Physics Chemistry

Engineering :: Heat Transfer

  Thermal conductivity of air at room temperature is approximately
[A]. 0.002 kcal/m-hr-?C[B]. 0.02 kcal/m-hr-?C
[C]. 0.2 kcal/m-hr-?C[D]. 2.0 kcal/m-hr-?C
[E]. 20.0 kcal/m-hr-?C    

Answer: Option B
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