MCQ on Filtration with Answers
MCQ on Filtration with Answers: Filtration is a method used to separate suspended solids from a fluid (liquid or gas) by using a filter medium made of a porous material, often called a sieve or filter. This filter traps larger solids while allowing the fluid and smaller particles to pass through.
Filtration is a common technique in daily life and is also extensively used in various industries. There are many mechanical devices designed to perform filtration with different levels of precision. Here we have provided MCQ on Filtration with Answers Pdf.
MCQ on Filtration with Answers Pdf
Q1. What is the main purpose of filtration?
a) To separate solids from liquids
b) To remove impurities from a solution
c) To purify a gas
d) All of the above
Answer: D) All of the above
Explanation: Filtration is a versatile process used for various purposes including separating solids from liquids (a), removing impurities from a solution (b), and purifying gases (c). Therefore, the most comprehensive answer is all of the above.
Q2. Which of the following is not the application of filtration?
a) Sterilization of media
b) Removal of debris
c) Plasma clarification
d) Off-gas analysis
Answer: D) Off-gas analysis
Explanation: Filtration is used in sterilizing media (a), removing debris (b), and clarifying plasma (c). Off-gas analysis (d), however, typically involves gas detection and measurement, not filtration.
Q3. What is the process called when a solid filter media traps particles as a liquid or gas flows through it?
a) Adsorption
b) Absorption
c) Filtration
d) Distillation
Answer: C) Filtration
Explanation: Filtration is the process where a solid filter medium traps and removes particles from a liquid or gas as it passes through.
Q4. Which of the following filter is used in the filtration of bacteria?
a) Bottle top filters
b) Oxalate filters
c) Cellulose Acetate filters
d) PES membrane filters
Answer: C) Cellulose Acetate filters
Explanation: Cellulose Acetate filters are commonly used for bacterial filtration due to their small pore size, which is effective at trapping bacteria.
Q5. Which of the following is NOT a type of filtration process?
a) Gravity filtration
b) Pressure filtration
c) Vacuum filtration
d) Thermal filtration
Answer: D) Thermal filtration
Explanation: Gravity filtration, pressure filtration, and vacuum filtration are all common filtration processes. Thermal filtration is not a recognized filtration method.
Q6. What is the process called when a filter media becomes clogged and needs to be replaced or cleaned?
a) Filter regeneration
b) Filter rejuvenation
c) Filter breakthrough
d) Filter backwash
Answer: C) Filter breakthrough
Explanation: Filter breakthrough occurs when the filter media becomes clogged, resulting in the need for cleaning or replacement to restore proper filtration.
Q7. In which of the following the size of particles retained is much smaller than the pore size of the medium?
a) Batch filtration
b) Surface filtration
c) Submerged filtration
d) Depth filtration
Answer: D) Depth filtration
Explanation: Depth filtration retains particles throughout the depth of the filter medium, allowing for the capture of smaller particles than the pore size.
Biotechnology: Principles and Processes
Q8. Which of the following is NOT a common type of filter media?
a) Sand
b) Gravel
c) Activated carbon
d) Ceramic
Answer: D) Ceramic
Explanation: While ceramic can be used as a filter medium, it is less common compared to sand, gravel, and activated carbon in many typical filtration applications.
Q9. What is the process called when a filter is used to remove bacteria and other microorganisms from a liquid?
a) Sterilization filtration
b) Sanitation filtration
c) Disinfection filtration
d) Microfiltration
Answer: A) Sterilization filtration
Explanation: Sterilization filtration involves using filters designed to remove bacteria and other microorganisms, ensuring the liquid is sterile.
Q10. What is the process called when a filter is used to remove particles smaller than 0.1 micrometers from a liquid?
a) Ultrafiltration
b) Nanofiltration
c) Reverse osmosis
d) All of the above
Answer: D) All of the above
Explanation: Ultrafiltration, nanofiltration, and reverse osmosis are all processes capable of removing extremely small particles, often smaller than 0.1 micrometers.
Q11. Which of the following process is used to separate insoluble particles from liquids?
a) Filtration
b) Extraction
c) Drying
d) Sieving
Answer: A) Filtration
Explanation: Filtration is specifically used to separate insoluble particles from liquids by passing the mixture through a filter medium that traps the particles.
Q12. Which of the following is NOT a common application of filtration?
a) Water treatment
b) Beer brewing
c) Medical treatment
d) Aerospace engineering
Answer: D) Aerospace engineering
Explanation: While filtration is essential in water treatment, beer brewing, and medical treatment, it is not typically a direct application in aerospace engineering.
Q13. What is the process called when a filter is used to remove dissolved ions and molecules from a liquid?
a) Deionization
b) Demineralization
c) Desalination
d) All of the above
Answer: D) All of the above
Explanation: Deionization, demineralization, and desalination all involve removing dissolved ions and molecules from liquids, making all options correct.
Q14. What is the process called when a filter is used to remove particles from a gas?
a) Gas filtration
b) Air filtration
c) Vapour filtration
d) All of the above
Answer: D) All of the above
Explanation: Gas filtration, air filtration, and vapor filtration all refer to the process of removing particles from a gas, making all options correct.
Q15. What is the pore size of the filtration membrane to remove bacteria?
a) 0.25 µm
b) 0.22 µm
c) 0.27 µm
d) 0.26 µm
Answer: B) 0.22 µm
Explanation: A pore size of 0.22 micrometers is standard for filtering out bacteria from solutions, ensuring effective removal of bacterial contaminants.