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Heat Transfer

Q1: Prandtl number for most of dry gases is about

A 0.001

B 0.72

C 70

D 150

ANS:B - 0.72

The Prandtl number (𝑃𝑟Pr) for most dry gases is approximately 0.7 to 0.8. Therefore, among the options provided, the closest value is 0.72. So, the Prandtl number for most dry gases is approximately 0.72.



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