Qualification of Liquid Filling & Sealing Equipment MCQs With Answer

Introduction:

This quiz set on Qualification of Liquid Filling & Sealing Equipment is designed for M.Pharm students preparing for examinations and practical work in scale-up and technology transfer. It focuses on equipment qualification phases (DQ/IQ/OQ/PQ), critical process parameters, common filling/sealing technologies (piston, peristaltic, overflow, induction sealing), verification and integrity tests, sampling and acceptance criteria, and regulatory expectations for sterile and non-sterile liquid operations. Questions emphasize practical understanding of validation activities, instrumentation, and test methods used to ensure consistent dose accuracy, container closure integrity and compliance to cGMP during equipment qualification and commissioning.

Q1. Which sequence correctly represents the primary phases of equipment qualification?

• IQ -> OQ -> PQ
• DQ -> IQ -> OQ -> PQ
• FAT -> SAT -> PQ
• IQ -> PQ -> QA

Correct Answer: DQ -> IQ -> OQ -> PQ

Q2. Which test is most commonly used to verify fill volume accuracy during performance qualification?

• Gravimetric weight check
• Visual inspection of meniscus
• Dye ingress test
• Microbial endotoxin test

Correct Answer: Gravimetric weight check

Q3. Which leak detection method provides the highest sensitivity for detecting micro-leaks in sealed vials?

• Dye ingress test
• Vacuum decay test
• Helium mass spectrometer leak detection
• Torque measurement of cap

Correct Answer: Helium mass spectrometer leak detection

Q4. For induction foil sealing of bottles, which parameter is most critical to achieve hermetic sealing?

• Induction coil frequency alone
• Sealing temperature at foil-container interface
• Conveyor speed only
• Cap torque setting

Correct Answer: Sealing temperature at foil-container interface

Q5. Which statistical sampling standard is commonly referenced for attribute sampling during PQ acceptance?

• USP <788>
• ANSI/ASQ Z1.4 (formerly MIL-STD-105)
• ICH Q9
• ISO 9001

Correct Answer: ANSI/ASQ Z1.4 (formerly MIL-STD-105)

Q6. Peristaltic pumps are especially suitable for filling which kind of liquid?

• Highly abrasive slurries
• Shear-sensitive and sterile liquids where product contacts tubing only
• Hot melts above 150 °C
• High-pressure gasified liquids

Correct Answer: Shear-sensitive and sterile liquids where product contacts tubing only

Q7. Which integrity test is most appropriate for non-porous induction seals to detect gross leaks?

• Peel strength test
• Vacuum decay test
• pH challenge test
• Viscosity profiling

Correct Answer: Vacuum decay test

Q8. Which non-contact technique is commonly used on modern filling lines to verify fill height and detect underfills?

• Load cell weight check
• Vision inspection system (camera-based)
• Dye penetration
• Manual dipstick measurement

Correct Answer: Vision inspection system (camera-based)

Q9. For aseptic liquid filling equipment qualification, which activity is critical to demonstrate aseptic processing?

• Verification of HEPA-filtered unidirectional airflow and validated sterilization of all product-contact parts
• Visual inspection of floor cleanliness only
• Routine microbiological testing of finished product only
• Measuring room temperature once per month

Correct Answer: Verification of HEPA-filtered unidirectional airflow and validated sterilization of all product-contact parts

Q10. What is the purpose of a Factory Acceptance Test (FAT) and Site Acceptance Test (SAT) in equipment qualification?

• FAT is for cleaning validation; SAT is for process validation
• FAT is performed at manufacturer before shipment; SAT is performed after installation at the site
• FAT is regulatory audit; SAT is production audit
• FAT measures microbiology; SAT measures chemistry

Correct Answer: FAT is performed at manufacturer before shipment; SAT is performed after installation at the site

Q11. Why is calibration of load cells used in gravimetric filling checks essential?

• To ensure the load cell does not leak
• To verify accuracy and traceability of weight measurements used for fill control
• To sterilize the weighing system
• To measure cap torque indirectly

Correct Answer: To verify accuracy and traceability of weight measurements used for fill control

Q12. Which instrument is used to measure capping torque for quality control of screw caps?

• Torque tester (torque meter)
• Manometer
• UV spectrophotometer
• pH meter

Correct Answer: Torque tester (torque meter)

Q13. Overflow filling technology is most appropriate for which application?

• Highly viscous creams
• Clear, low-viscosity liquids where a uniform fill level is required
• Powder filling into sachets
• Filling under inert gas for reactive slurries

Correct Answer: Clear, low-viscosity liquids where a uniform fill level is required

Q14. Which of the following are critical process parameters (CPPs) for heat-sealing flexible pouches?

• Seal temperature, pressure and dwell time
• Only the color of the pouch
• Line speed only
• Ambient humidity only

Correct Answer: Seal temperature, pressure and dwell time

Q15. A commonly used sample size for fill-weight verification per production run during PQ is:

• 5 containers
• 30 containers
• 500 containers
• 1000 containers

Correct Answer: 30 containers

Q16. Which regulatory guidance specifically addresses sterile manufacturing and containment for aseptic processing equipment?

• ICH Q8
• EU GMP Annex 1 (Sterile Medicinal Products)
• USP <795>
• ISO 9000

Correct Answer: EU GMP Annex 1 (Sterile Medicinal Products)

Q17. Which capping mechanism is preferred to avoid rotating fragile containers during cap application?

• Spindle capper that spins the bottle
• Chuck capper that grips and rotates only the cap
• Snap-on manual capping
• Heat-shrink capper

Correct Answer: Chuck capper that grips and rotates only the cap

Q18. What is the main significance of specifying appropriate capping torque in qualification?

• To maximize production speed only
• To balance container closure integrity and user operability (ease of opening) while avoiding damage
• To ensure the cap color adheres
• To sterilize the cap

Correct Answer: To balance container closure integrity and user operability (ease of opening) while avoiding damage

Q19. Which of the following is NOT a sterilization method for product-contact parts commonly used in pharma equipment qualification?

• Steam autoclaving
• Gamma irradiation
• Ethylene oxide (EtO) sterilization
• Ultrasonic cleaning

Correct Answer: Ultrasonic cleaning

Q20. Which USP chapter specifically provides standards for particulate matter in injections relevant to liquid filling qualification?

• USP <661>
• USP <788>
• USP <797>
• USP <1112>

Correct Answer: USP <788>

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