Coffee powders can be made from which of the following dryers?

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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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Statement 1: Cabinet tray dryers are used for storing grains. Statement 2: Cabinet tray dryers are used for low cost foods.

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Statement 1: When alcohol is allowed to move from chamber A to chamber B when a barrier between them is removed, it is called multi phase diffusion. Statement 2: When oxygen is made to diffuse into the water, it’s called continuous molecular diffusion.

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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: Cabinet tray dyers can be used for heat sensitive materials. Statement 2: Bin dryer is used for materials which follow the falling rate drying curve.

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Statement 1: Generally, in small scaled jacketed pans, food products like jams, sauces etc are made. Statement 2: Baffles provide structural support to tubes, but they cannot prevent channeling.

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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 rising film evaporator, the feed can be very viscous. Statement 2: In a rising film evaporator, the feed cannot be heat sensitive.

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Although microwave heating can be used for drying of food containing uneven water content, it is isn’t done for certain food products like garlic. Why?

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Statement 1: In coiled heat exchanger, the coils can be present inside and outside the vessel. Statement 2: The coils can have either hot/cold fluid present inside them or even electrical coils can be present.

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Statement 1: Scraped surface evaporators are used in the dairy industry. Statement 2: Plate evaporators can be used for viscous liquids.

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Which of the following is a parameter to be checked before choosing the shape of the pitch in heat exchangers?

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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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Statement 1: Removing of moisture content for grains in the food industry follows the thin layer model of drying bed. Statement 2: The model for removing moisture from grains is computerized to find out the exact amount of time of exposure of grains for the removal of moisture.

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Statement 1: Scraping improves heat transfer co-efficient by 5 times in case of non-Newtonian fluids. Statement 2: In food industry, major physical changes to food items when they’re processed, take place like transformation from Newtonian to Non-Newtonian fluids. Hence, scraped surface heat exchangers are very beneficial.

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Plate evaporators are used in recovering aroma from fruit juices.

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Mixed feed arrangement offers the advantage of omitting the usage of pumps by transferring feed in the direction of low pressure. That’s an advantage taken from forward feeding arrangement.

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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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Statement 1: Plate heat exchangers are used in heat sensitive foods like milk. Statement 2: Principle behind plate heat exchangers is that there is very less space between the plates and hence quick heating can take place.

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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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