PPSC Labour Inspector- Labour and Human Resource Department 2020, Pak Study MCQs, PPSC Solved Past Papers MCQsWhich cities of Punjab are the largest cotton producing cities ?A. Gujrat, Gujranwala, Lahore B. Attock, Rawalpindi, Chakwal C. Bahawalpure, Multan, Vehari D. Jhung, Sahiwal, Kot Adu Which of the following helps in blood clotting?The teacher set some homework ____ the end of the lesson?