Question

What does ‘-‘ sign mean in the following expression: – 150 + 200 mesh particles?

(a) Pass through 150

(b) Doesnt pass through 150

(c) Pass through 200

(d) None of the mentioned

This question was posed to me in an online quiz.

This is a very interesting question from Fixed Bed topic in section Fluidization and Mapping of Regimes of Fluidization Engineering

Answer 1

Correct option is (a) Pass through 150

To explain: It represents particles which pass through 150 mesh.