PPSC Past Paper Labour Officer Labour and Human Resource Department 2018 Solved MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsWhich Chemical in tobacco causes a smoker to be addicted to smliking?A. Carbon monoxide B. Tar C. Nicotine D. Ammonia A hard disk becomes totally inaccessible when a computer virus corrupts its?Gestapo was the Secret Police of?
