Q. What is the value of diffusivity for hydrogen?

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Q. Which one is having the lowest value of diffusivity?

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Q. What is the value of diffusivity for water?

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Q. Which one is having the highest value of diffusivity?

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Q. What is the value of diffusivity for ethyl alcohol?

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Q. Which one is having the lowest value of diffusivity?

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Q. What is the value of diffusivity for benzene?

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Q. Which one is having the highest value of diffusivity?

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Q. Which one is having highest density?

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Q. What is the density of paper in kg/m³?

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Q. Which one is having the least density?

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Q. What is the density of sand in kg/m³?

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Q. What is the density of snow in kg/m³?

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Q. Which one is having least density?

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Q. What is the density of limestone in kg/m³?

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Q. What is the density of granite in kg/m³?

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Q. Which one is having highest density?

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Q. What is the density of oak in kg/m³?

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Q. Assume the following thermos-physical properties of air

D = 0.256 * 10⁻⁴ m²/s
µ = 1.86 * 10⁻⁵ kg/m s
cₚ = 1.005 k J/kg degree Celsius
pᵣ = 0.701
p =1.165 kg/m³

Find the value of Schmidt number.

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Q. Air at 30 degree Celsius temperature flows at 45 m/s past a wet flat plate of length 0.5 m. Estimate the value of mass transfer coefficient. Assume that the water vapor content of air initially is negligible and take the following thermos-physical properties of air.

D = 0.256 * 10⁻⁴ m²/s
µ = 1.86 * 10⁻⁵ kg/m s
cₚ = 1.005 k J/kg degree Celsius
pᵣ = 0.701
p =1.165 kg/m³

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