The existence of a thick constant film between two phases is a proposal by which of the following theories?

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Statement 1: Duhring’s rule states that the ratio of temperatures at which two solutions have the same vapor pressure is constant. Statement 2: Duhring’s rule states that the boiling point of a solution is a linear function of the boiling point of pure water at the same pressure.

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Which theory proposes that the film is continuously getting renewed and replaced by the bulk liquid?

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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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In a rising film evaporator, the temperature difference need not be as high as that in a falling film evaporator.

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Statement 1: In film theory, mass transfer coefficient is proportional to D^1/2 Statement 2: Penetration theory states that all elements are exposed at the same time which is unrealistic.

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Statement 1: Diffusion of gas component through the resistive film to the bulk of the liquid is the rate determining step. Statement 2: Diffusion of gas component through the gas-liquid inter-phase is the rate determining step.

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Any food item should be subjected to micro frequencies such that, the dielectric constant is _____ and loss factor is _____

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The point where the constant drying period changes to falling rate period is called _____

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On wet basis, the denominator stays constant whereas in moisture content on dry basis, the denominator changes.

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Statement 1: A phase boundary exists between alcohol and oxygen. Statement 2: Phase boundary varies with agitation. It is inversely proportional to the amount of agitation provided.

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Statement 1: Difference between 1-1 and 1-2 heat exchanger is that 1-2 has both counter AND co current, whereas 1-1 has only co-current. Statement 2: 1-2 heat exchanger requires a high pressure drop.

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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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A phase boundary between alcohol and water exists.

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Drying rate curve is plot between _____ and _____

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

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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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At a food processing industry, the steam was re-compressed and a small amount of steam at high pressures and temperatures was sent into the next evaporation chamber in a multiple effect evaporator. Which of the following is true with respect to the above sentences?

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Which of the following is NOT a part of the microwave heating system?

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Which of the following is a synonym for loss factor of food?

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Which of the following is untrue? (a)It is difficult to predict the electric field intensity inside a food material

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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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External heat exchangers are gaining popularity as they’ve several advantages over conventional methods. Still, there is a major drawback. Which among the following is it?

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Which of the following dryers cannot take a feed in the form of pastes/slurries/sticky items?

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