Question

The pressure which is applied to separate the water from its contaminants is of the order ___________

(a) 5-10 kg/cm^2

(b) 15-40 kg/cm^2

(c) 50-100 kg/cm^2

(d) 100-150 kg/cm^2

The question was posed to me by my college director while I was bunking the class.

I want to ask this question from Reverse Osmosis in portion Water and its Treatment of Engineering Chemistry II

Answer 1

The correct answer is (b) 15-40 kg/cm^2

Easy explanation: The pressure which is applied to separate the water from its contaminants is of the order 15-40 kg/cm^2. It does not require very high pressure.