Mass Transfer-Data Intensity 1 Multiple Questions and Answers.




26.Dried finished product sampled from various parts of a ____ dryer exhibits nonuniformity in the moisture content?
A. Rotary
B. Tray
C. Freeze
D. None of these

27.The value of „L/mG’ ratio for economical absorption operation ranges from?
A. 0.5 to 0.8
B. 0.8 to 1.2
C. 1.25 to 2.0
D. 2.5 to 3.5

28.Large quantity of silica gel is normally dried in a __ dryer?
A. Freeze
B. Through circulation
C. Rotary vacuum
D. Tray

29.Mass transfer co-efficient is defined as__?
A. Flux = Co-efficient/concentration difference
B. Co-efficient = Flux/concentration difference
C. Flux=concentration difference/coefficient
D. None of these

30.Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be___?
A. Cooled
B. Humidified
C. Dehumidified
D. All of above

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