General Knowledge MCQs, PLANNING OFFICER/ DEPUTY DISTRICT OFFICER (PLANNING) (BPS-17)P & D Department. 2014, PPSC Solved Past Papers MCQsWhat is the main cause of earth quakes?A. Volcanic activities B. Tectonic plates’ movement C. Tectonic dislocation D. All of the above Night blindness is caused by lack of which vitamin?Which of the following inventions is the oldest?
