PPSC Past Paper Assistant Planning & Development 2019 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsBrass gets discolored in air because of the presence of which of the following gases in air? Posted on April 21, 2021 by Rana TahirA. Oxygen B. Hydrogen Sulphide C. Carbon dioxide D. NitrogenShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)
