Sphericity of pulverised coal is__________________?
Correct answer: B. < 1
- A. 1
- B. < 1
- C. > 1
- D. ∞
Explanation
Sphericity is the ratio comparing a particle with an equal-volume sphere, and it is 1 only for a perfect sphere. Pulverised coal particles are irregular, so their sphericity is less than 1.
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