Question

4 screens can separate _____ differently sized particles.

(a) 3

(b) 4

(c) 5

(d) 6

This question was addressed to me by my school teacher while I was bunking the class.

I need to ask this question from Unit Operations topic in division Sedimentation and Centrifuge, Mixing, Size Reduction and Separation and Material Handling and Transportation of Food Engineering

Answer 1

The correct answer is (c) 5

Explanation: 4 screens can separate 5 differently sized particles. The number of particle sizes that can be obtained from n number of screens is always n+1.