Rayleigh number is _____

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Statement 1: Vibro-fluidized bed dryer can reduce the air flow rate consumptions as air is only used for drying and not for fluidizing. Statement 2: _____ are often called desolventizers.

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In plate evaporator, the heat transfer coefficient is high in spite of low residence time because _____

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During evaporation of edible solutions, the BPR-boiling point rise should be _____ and the foaming and scale formation should be _____

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In flashing of jams, the temperature of concentrated jam _____ on flashing. Also, the vapor pressure of the concentrated jam _____

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Which of the following is also called a ring dryer?

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The EMC-RH data is fitted to Henderson’s equation. Which of the following is true about the relative humidity with respect to food technology terminology?

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Which of the following is not a measuring technique of KLa?

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Statement 1: Concentration is a product of diffusivity and solubility. Statement 2: Permeability coefficient in case of food packaging can be written as product of partial pressure and solubility using Henry’s law.

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Statement 1: In a multiple effect evaporator, the overall temperature drop is equal to the individual drops at each step. Statement 2: In a multiple effect evaporator, the total area is equal to the sum of the individual areas.

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Statement 1: In microwave heating, heat is not applied to the food item. Statement 2: Radiation doesn’t gives even drying whereas microwave heating does.

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Shifting of a pair of ripened apples from the store house to the vegetable cart is called mass transfer.

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A major reason as to why evaporators and their selection for different applications in the food industry is very important is because ______

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Statement 1: Which tray dryer has indirect heating? Statement 2: Which tray dryer is good for making powders?

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Tunnel dryer is only a continuous version of a cabinet tray dryer.

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In a packaging of dry grapes, the packaging material is made of polyethylene. The dry grapes have certain moisture content. Which of the following is true with respect to the diffusion of certain amount of moisture through the packing?

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Statement 1: Drying is used for preservation of food. Statement 2: Convective drying is indirect drying and conductive drying is direct drying.

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Statement 1: KLa is measured together and not separately.

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Statement 1: Penetration theory states that mass transfer coefficient is directly proportional to diffusivity coefficient which was later proved wrong. Statement 2: Penetration theory states that mass transfer is based on unsteady mass transfer.

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