Prepare with MCQs on the general introduction to processes and equipment used in pharmaceutics. Learn about key machinery, techniques, and their applications in manufacturing and quality control.
General Introduction of Processes
- What is the primary purpose of mixing in pharmaceutical processes?
- A) Increasing particle size
- B) Homogenizing different components
- C) Sterilizing the product
- D) Separating impurities
- Answer: B
- Which type of mixing involves the tumbling motion of powders?
- A) Paddle mixing
- B) V-Type mixing
- C) Planetary mixing
- D) Shear mixing
- Answer: B
- Which equipment is used for the preparation of suspensions and emulsions?
- A) Ball mill
- B) Silverson Homogenizer
- C) Belt dryer
- D) Tubular centrifuge
- Answer: B
- Size reduction is also referred to as:
- A) Agglomeration
- B) Comminution
- C) Lyophilization
- D) Centrifugation
- Answer: B
- What is the main principle of a hammer mill?
- A) Shear mixing
- B) Impact force
- C) Centrifugal force
- D) Heat transfer
- Answer: B
Mixing
- The efficiency of the V-Type mixer largely depends on:
- A) Speed of rotation
- B) Temperature control
- C) Type of powder
- D) Mixer blade design
- Answer: A
- Silverson Homogenizer works on the principle of:
- A) Fluid circulation
- B) High-shear mixing
- C) Low-speed tumbling
- D) Centrifugal force
- Answer: B
- What type of mixing is suitable for small-scale liquid formulations?
- A) V-Type mixing
- B) Planetary mixing
- C) Homogenization
- D) Ribbon mixing
- Answer: C
Size Reduction
- Ball mills are suitable for which type of material?
- A) Highly viscous liquids
- B) Hard solids
- C) Fine powders
- D) Low-density materials
- Answer: B
- Which process uses impact force for size reduction?
- A) Ball milling
- B) Lyophilization
- C) Hammer milling
- D) Filtration
- Answer: C
- Size reduction enhances drug:
- A) Stability
- B) Absorption
- C) Solubility
- D) Toxicity
- Answer: C
- Which size reduction method is ideal for heat-sensitive materials?
- A) Cryogenic grinding
- B) Ball milling
- C) Hammer milling
- D) High-speed grinding
- Answer: A
Drying
- Drying involves the removal of:
- A) Solvents
- B) Impurities
- C) Active ingredients
- D) Additives
- Answer: A
- Which drying equipment is suitable for temperature-sensitive products?
- A) Belt dryer
- B) Vacuum tray dryer
- C) Hot air oven
- D) Rotary dryer
- Answer: B
- What is the primary advantage of using a vacuum tray dryer?
- A) High drying temperature
- B) Low cost
- C) Faster drying
- D) Reduced oxidation
- Answer: D
- Belt dryers are commonly used for drying:
- A) Solutions
- B) Powders
- C) Granules
- D) Tablets
- Answer: C
Filtration
- Filtration is used to:
- A) Separate solids from liquids
- B) Mix liquids
- C) Increase particle size
- D) Dry materials
- Answer: A
- Which filter type uses centrifugal force for separation?
- A) Pressure leaf filter
- B) Tubular centrifuge
- C) Vacuum filter
- D) Gravity filter
- Answer: B
- The main purpose of a pressure leaf filter is:
- A) Mixing two liquids
- B) Filtering liquids with suspended solids
- C) Heating solutions
- D) Reducing particle size
- Answer: B
- In filtration, the substance that passes through the filter is called the:
- A) Solute
- B) Filtrate
- C) Sediment
- D) Precipitate
- Answer: B
Evaporation
- Evaporation is used to:
- A) Concentrate solutions
- B) Mix components
- C) Filter impurities
- D) Cool materials
- Answer: A
- Which equipment is used for the evaporation of highly viscous solutions?
- A) Falling film evaporator
- B) Belt dryer
- C) Ball mill
- D) Rotary evaporator
- Answer: A
- The purpose of natural circulation in an evaporator is to:
- A) Increase mixing speed
- B) Facilitate separation of vapor and liquid
- C) Reduce the concentration
- D) Enhance heat transfer
- Answer: B
- Forced circulation evaporators are used to:
- A) Maintain natural flow
- B) Increase pressure and circulation
- C) Dry solutions
- D) Filter solids
- Answer: B
Rheology
- Rheology studies the flow of:
- A) Solids
- B) Gases
- C) Fluids under stress
- D) Light waves
- Answer: C
- Brookfield viscometer is used to measure:
- A) Particle size
- B) Viscosity
- C) Temperature
- D) pH
- Answer: B
- Which of the following affects the viscosity of a liquid?
- A) Temperature
- B) Color
- C) Shape
- D) Volume
- Answer: A
- Rheology is important in pharmaceutics for:
- A) Mixing solid components
- B) Determining material flow behavior
- C) Calculating evaporation rates
- D) Reducing particle size
- Answer: B
- The main factor controlled during viscosity measurement is:
- A) pH
- B) Temperature
- C) Speed of light
- D) Humidity
- Answer: B
- Rotational viscometers measure viscosity by:
- A) Dropping a ball through the liquid
- B) Rotating a spindle in the liquid
- C) Using ultrasound waves
- D) Heating the liquid
- Answer: B
