Home ยป In anaerobic conditions, mercury is present in; metallic form and Noise Pollution MCQs In anaerobic conditions, mercury is present in; metallic form and May 3, 2022 9 Views Q. In anaerobic conditions, mercury is present in; metallic form and A. Humic Acid B. Nitric Acid C. Methane form D. Sulphide form Answer: Sulphide form