PPSC Past Paper Excise & Taxation Inspector Region (LAHORE) Excise, Taxation & Narcotics Control Department 2018 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsWho postulated the law of universal gravitation? Posted on May 21, 2021 by Rana TahirA. Nicholas Copernicus B. Kepler C. Isaac Newton D. Albert EinsteinShare 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)