Question

Neutralisation adjusts pH level of corrosive between ____ and ____

(a) 5, 9

(b) 5.5, 9.5

(c) 6, 7

(d) 7, 8

This question was addressed to me during an interview for a job.

My enquiry is from Chemical Treatment topic in chapter Chemical, Physical & Biological Treatment of Hazardous Waste Management

Answer 1

Correct choice is (b) 5.5, 9.5

Explanation: The neutralization procedure adjusts the pH level of the corrosive waste to a pH between 5.5 and 9.5. The purpose of neutralisation is to alter the corrosive characteristic of the waste so that it can be disposed in a non-hazardous way.