Question:
Particle surface area can be determined by:
Particle surface area can be determined by:
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For Surface Area: Think "Gas Permeability" or "Adsorption (BET)". Others are for "Size".
Updated On: May 28, 2026
- Gas permeability method
- Coulter counter
- Sieving method
- Anderson pipette method
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The Correct Option is A
Solution and Explanation
Step 1: Concept
Particle size and surface area are fundamental properties in micromeritics. While many methods measure size, specific methods are needed for surface area.
Step 2: Meaning
Surface area refers to the total area of the particle surface per unit mass or volume.
Step 3: Analysis
Coulter counter, Sieving, and Anderson pipette are primarily used for particle size distribution. The Gas Permeability method (e.g., Fisher Sub-Sieve Sizer) calculates surface area based on the resistance to air flow through a packed bed of powder.
Step 4: Conclusion
The Gas permeability method is the correct choice for determining surface area.
Final Answer: (A)
Particle size and surface area are fundamental properties in micromeritics. While many methods measure size, specific methods are needed for surface area.
Step 2: Meaning
Surface area refers to the total area of the particle surface per unit mass or volume.
Step 3: Analysis
Coulter counter, Sieving, and Anderson pipette are primarily used for particle size distribution. The Gas Permeability method (e.g., Fisher Sub-Sieve Sizer) calculates surface area based on the resistance to air flow through a packed bed of powder.
Step 4: Conclusion
The Gas permeability method is the correct choice for determining surface area.
Final Answer: (A)
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