ISRO Mechanical & Aerospace 2010 - Question 12

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The value of Prandtl number for air is about

  • A. 0.1
  • B. 0.3
  • C. 0.7
  • D. 10.5

Answer: C. 0.7

Explanation: For air and many gases, the Prandtl number is approximately 0.7.

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