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
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
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
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
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
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
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
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
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
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
i. Colloid mill
ii. Fluid energy mill
iii. Hammer mill
iv. Rotary cutter mill
Answer: Colloid mill
