Pharmacy Practice MCQ » PHARMACAREERS

Pharmacy Practice MCQ, in this article we will solve, Practice MCQ under subject Microbiology. Read following article for your reference.

Principle, Procedure, Merits, Demerits And Applications Of Mechanical Method Of Sterilization » PHARMACAREERS

What is the primary principle of mechanical sterilization?
- A) Chemical removal of microorganisms
- B) Physical removal of microorganisms
- C) Thermal removal of microorganisms
- D) Biological removal of microorganisms
Which method is most widely used in mechanical sterilization?
- A) Filtration
- B) Radiation
- C) Chemical treatment
- D) Heat sterilization
What is the typical pore size range for membrane filters used in mechanical sterilization?
- A) 0.1 to 0.45 micrometers
- B) 1 to 5 micrometers
- C) 10 to 50 micrometers
- D) 50 to 100 micrometers
Which type of filter is commonly used to remove bacteria and larger microorganisms?
- A) Depth filters
- B) HEPA filters
- C) Membrane filters
- D) Sand filters
What material is typically used to make HEPA filters?
- A) Cellulose acetate
- B) Fiberglass
- C) Polypropylene
- D) Nylon
What is the efficiency of HEPA filters in removing particles as small as 0.3 micrometers?
- A) 90%
- B) 95%
- C) 99.97%
- D) 99.99%
Which type of filter is often used as a pre-filter to remove larger particles before finer filtration?
- A) Membrane filters
- B) Depth filters
- C) HEPA filters
- D) Sand filters
What is the primary application of membrane filters in pharmaceutical engineering?
- A) Sterilizing heat-sensitive solutions
- B) Removing large particles from air
- C) Filtering out gases
- D) Removing heavy metals
Which filtration method involves passing a liquid through a filter using vacuum or positive pressure?
- A) Air filtration
- B) Liquid filtration
- C) Gas filtration
- D) Solid filtration
What is the main advantage of using mechanical sterilization methods?
- A) High temperature tolerance
- B) Effective for heat-sensitive materials
- C) Low cost
- D) Simple operation
Which mechanical sterilization method is used for air purification in operating rooms and laboratories?
- A) Membrane filtration
- B) Depth filtration
- C) HEPA filtration
- D) Sand filtration
What is the main limitation of filtration as a mechanical sterilization method?
- A) High cost
- B) Limited to small-scale applications
- C) Not effective for all microorganisms
- D) Requires high temperatures
Which type of filter traps particles within the matrix of the filter material?
- A) Membrane filters
- B) Depth filters
- C) HEPA filters
- D) Sand filters
What is the typical pore size of a filter used to remove bacteria from solutions?
- A) 0.1 micrometers
- B) 0.22 micrometers
- C) 0.45 micrometers
- D) 1.0 micrometers
Which material is commonly used to make membrane filters?
- A) Fiberglass
- B) Cellulose acetate
- C) Diatomaceous earth
- D) Asbestos
What is the primary use of ultrafiltration in mechanical sterilization?
- A) Removing large particles
- B) Sterilizing air
- C) Concentrating and purifying proteins
- D) Filtering gases
Which mechanical sterilization method is particularly useful for sterilizing heat-sensitive materials?
- A) Filtration
- B) Radiation
- C) Chemical treatment
- D) Heat sterilization
What is the main disadvantage of using depth filters?
- A) High cost
- B) Limited to small-scale applications
- C) Not effective for all microorganisms
- D) Requires frequent replacement
Which type of filter is made from a mat of randomly arranged fibers?
- A) Membrane filters
- B) Depth filters
- C) HEPA filters
- D) Sand filters
What is the main application of HEPA filters in pharmaceutical engineering?
- A) Sterilizing heat-sensitive solutions
- B) Removing large particles from air
- C) Filtering out gases
- D) Air purification in clean rooms
Which filtration process involves pulling the liquid through the filter using a vacuum?
- A) Positive pressure filtration
- B) Negative pressure filtration
- C) Gravity filtration
- D) Centrifugal filtration
What is the main benefit of using mechanical sterilization methods over chemical methods?
- A) Higher efficiency
- B) Lower cost
- C) No chemical residues
- D) Simpler operation
Which type of filter is often used in the final filtration step to ensure sterility?
- A) Depth filters
- B) HEPA filters
- C) Membrane filters
- D) Sand filters
What is the primary mechanism by which depth filters trap particles?
- A) Surface filtration
- B) Depth filtration
- C) Adsorption
- D) Electrostatic attraction
Which material is used in depth filters to trap particles within the filter matrix?
- A) Cellulose acetate
- B) Fiberglass
- C) Diatomaceous earth
- D) Nylon
What is the main advantage of using HEPA filters in air purification systems?
- A) Low cost
- B) High efficiency
- C) Simple operation
- D) Long lifespan
Which type of filter is used to remove particles as small as 0.3 micrometers with an efficiency of 99.97%?
- A) Membrane filters
- B) Depth filters
- C) HEPA filters
- D) Sand filters
What is the primary application of depth filters in pharmaceutical engineering?
- A) Sterilizing heat-sensitive solutions
- B) Removing large particles from air
- C) Pre-filtration to remove larger particles
- D) Filtering out gases
Which mechanical sterilization method is effective for maintaining sterile environments?
- A) Filtration
- B) Radiation
- C) Chemical treatment
- D) Heat sterilization
What is the main limitation of using membrane filters for sterilization?
- A) High cost
- B) Limited to small-scale applications
- C) Not effective for all microorganisms
- D) Requires high temperatures

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