Which of the following substances is not an insulator? by Sunday | Aug 29 | Physics WAEC | 0 comments A. Aluminium B. Glass C. Plastic D. Clay E. Cork Correct Answer: Option A – Aluminium Users Also Read These:Which of the following substances is not a…Which of the following substances is not usually…Which of the following substances does not have van…Which of the following groups of substances are not…Which of the following substances is not a salt?