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Statement 1: Case hardening is controlled by _____ and _____

Statement 2: Drying time _____ rapidly as the final moisture content approaches its equilibrium value.

(a) Increases, humidity, temperature

(b) Decreases, humidity, concentration

(c) Increases, temperature, concentration

(d) Decreases, temperature, concentration

I got this question in an internship interview.

I want to ask this question from Principles of Food Preservation by Drying-1 topic in portion Principles of Food Preservation by Canning and Drying and Principles of Food Concentrates of Food Engineering

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The correct choice is (a) Increases, humidity, temperature

Easiest explanation: Case hardening is controlled by humidity and temperature. Drying time increases rapidly as the final moisture content approaches its equilibrium value.

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