Sterilization problems
- 1. The mechanism of air filtration in fibrous filter is
Options- A. electrostatic attraction
- B. impaction
- C. interception
- D. all of these Discuss
Correct Answer: all of these
- 2. Glass fibers are favorable as a filter medium because they give a
Options- A. lower pressure drop and are less liable to wetting or combustion
- B. more pressure drop and are less liable to wetting or combustion
- C. lower pressure drop and are more liable to wetting or combustion
- D. more pressure drop and are more liable to wetting or combustion Discuss
Correct Answer: lower pressure drop and are less liable to wetting or combustion
- 3. The mechanical means of accomplishing sterilization of fermentation media/equipment is
Options- A. ultrasonic
- B. radiation
- C. chemical agents
- D. none of these Discuss
Correct Answer: ultrasonic
- 4. The interception efficiency can be expressed as (where dp is the particle diameter and Dc cylindrical collection diameter)
Options- A. dp/Dc
- B. dp x Dc
- C. dp/Dc x 100
- D. dpDc/100 Discuss
Correct Answer: dp/Dc
- 5. The filter material used for air filtration system is/are
Options- A. glass wool
- B. glass fibre
- C. norite
- D. all of the above Discuss
Correct Answer: all of the above
- 6. The sterilization method depends
Options- A. nature of additive
- B. volume and feed rate
- C. both (a) and (b)
- D. none of these Discuss
Correct Answer: both (a) and (b)
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