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Size Reduction Pharmaceutical engineering MCQ with answers


Pharm Engg Chapterwise MCQ: UNIT-I MCQ * Flow of fluids * Size reduction * Size separation UNIT-II MCQ *Heat transfer *Distillation *Evaporation UNIT-III MCQ *Drying * Mixing UNIT-IV MCQ * Filtration * Centrifugation * UNIT-V MCQ Materials of construction * Corrosion


Size reduction CAN NOT be obtained by one of the following Method
i.  Flocculation
ii.  Mechanical
iii. Physical
iv. Precipitation

Answer: Flocculation

Which mill is preferred for wet grinding?
i. Colloid mill
ii. Hammermill
iii. Roller mill
iv. Rotary cutter mill

Answer: Colloid mill

Size reduction of potent materials is necessary for one of the following quality control parameters, in the formulation of dosage forms.
i. Content uniformity
ii. Friability
iii. Hardness
iv. Poor mixing

Answer: Content uniformity

Size reduction of materials has one of the following disadvantages
i.  High degradation
ii. High dissolution
iii. High flow of materials
iv. High surface area

Answer: High degradation

Which one of the following sequences are involved in the mechanisms of size reduction?
i.  Chipping and cracks
ii.  Chipping and flaws
iii. Chipping, flaws and cracks
iv.   Chipping, flaws, cracks and cleavage

Answer: Chipping, flaws, cracks and cleavage

Which one of the following is NOT a mode of stress in size reduction?
i. Classification
ii. Collision
iii. Compression
iv. Cutting

Answer: Classification

Which one of the following parameters of the finished product is NOT influenced by the selection of size reduction equipment?
i.  Porosity
ii. Shape
iii. Surface roughness
iv. True density

Answer: Surface roughness

Which are the modes observed in a ball mill for size reduction?
i.  Attrition and cutting
ii. Compression and impact
iii. Cutting and compression
iv. Impact and attrition

Answer: Impact and attrition

Which mill includes a screen as an integral part of the size reduction?
i.  Ball mill
ii. Colloid mill
iii. Edge runner mill
iv. Hammer mill

Answer: Hammer mill

Clearance between the stator and rotor is critical following size reduction mills. a critical factor in one of the following mill
i.  Colloid mill
ii. Fluid energy mill
iii.   Hammer mill
iv.   Rotary cutter mill

Answer: Colloid mill

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