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Harkins-Jura equation does not predict satisfactory EMC values when relative humidity is __________

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in Food Processing Unit Operations by (110k points)
Harkins-Jura equation does not predict satisfactory EMC values when relative humidity is __________

(a) more than 30%

(b) more than 40%

(c) more than 50%

(d) more than 60%

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This interesting question is from Drying topic in section Drying of Food Processing Unit Operations

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Correct answer is (a) more than 30%

For explanation: Harkins-Jura equation does not predict satisfactory EMC values when relative humidity is more than 30%. In this equation, it deals with the work required to absorb or desorb a water molecules, the sum of work required to overcome vapor molecule to come on the surface and work necessary for condensation.

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