Question

What is the sphericity of round sand particles?

(a) 0.67

(b) 0.86

(c) 0.63

(d) 0.58

The question was asked in an interview for internship.

I'm obligated to ask this question of Minimum Fluidizing Velocity topic in chapter Fluidization and Mapping of Regimes of Fluidization Engineering

Answer 1

Right option is (b) 0.86

The best I can explain: Based on the data from the Voidage table at Minimum fluidizing conditions.