Question

What can be the concentration of Sodium chloride used in ECB?

(a) 0.1 – 0.5 g/L

(b) 1 – 5 g/L

(c) 10 – 50 g/L

(d) 100 – 500 g/L

The question was posed to me in unit test.

The doubt is from Electrochemical Buffing-Introduction, Material Removal in section Hybrid Electrochemical Processes of Advanced Machining

Answer 1

Correct choice is (d) 100 – 500 g/L

The explanation: The concentration of sodium chloride solution used for machining in ECB is about 100 – 500 g/L.