PPSC Past Paper Excise & Taxation Inspector D G Khan Region Excise, Taxation & Narcotics Control Department 2018 Solved MCQs, General Knowledge MCQs, PPSC Solved Past Papers MCQsWhich of these is the most predominant in the composition of atmosphere? Posted on May 22, 2021 by Rana TahirA. Oxygen B. Nitrogen C. Water vapour D. Carbon dioxideShare 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)