Q. Statement 1: Froude number relates the gravitational effect which is important when the liquid is agitated by an impeller.
Statement 2: When Nʀₑ,ᵢ < 300, NFr is ineffective.

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Q. With respect to the relationship between the power number and the impeller Reynolds’s number, which amongst the following statements is true?

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Q. Statement 1: In the transient zone, the power input depends on the density and viscosity of the fluid.
Statement 2: In the laminar zone, the power input depends on the density only. It is independent of the viscosity of the fluid.

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Q. Statement 1: For non-Newtonian fluids, another term called apparent viscosity is used as their viscosity changes with the change in the shear rate.
Statement 2: For non-Newtonian fluids, between the transition region, the power number for non-Newtonian fluids is slightly higher than that for Newtonian fluids.

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Q. Statement 1: Where Pg is power for a gassed system and Po is power for an ungassed system, Pg/Po is _____
Statement 2: Na stands for _____

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Q. Statement 1: Flat blade/curve blade/arrow head/vaned disc turbines are generally used for gas-liquid mixing.
Statement 2: Helical screw/ribbon mixer/gate anchor are generally used for solid-solid mixing.

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Q. Which of the following is true with respect to Carbonation?

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Q. With respect to dipping oil emulsions, which of the following is true?

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Q. Which of the following is an advantage of size reduction?

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Q. Statement 1: Dispersion of one immiscible liquid into another also involves size reduction.
Statement 2: Leaching requires size reduction.

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Q. Which of the following is NOT true with respect to size reduction?

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Q. Which of the following is NOT a method used for size reduction?

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Q. Statement 1: Grinding laws are based on the energy required for the creation of new surface area.
Statement 2: In general, all the laws are based on the principle that the energy required per unit area of the surface is directly proportional to the size of the particle.

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Q. Statement 1: A hammer mill uses an impact to break particles.
Statement 2: A chakki uses compression to break particles.

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Q. Kick’s law is an intermediate between rittinger’s law and bond’s law.

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Q. A jaw crusher uses _____

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Q. A ball mill uses _____

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Q. Which of the following uses attrition?

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Q. Which of the following is used for shredding meat in the food industry?

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Q. Which of the following food operation does NOT use the principle of size reduction for its operation?

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