General Knowledge MCQs, PLANNING OFFICER/ DEPUTY DISTRICT OFFICER (PLANNING) (BPS-17)P & D Department. 2014, PPSC Solved Past Papers MCQsWhich of the following inventions is the oldest? Posted on October 28, 2021 by Aban CheemaA. Clocks B. Microscope C. Barometer D. CycleShare 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)
