Islamic Studies MCQs, EDUCATOR IN THE PUNJAB SPECIAL EDUCATION DEPARTMENT- 2015 (BS-16), PPSC Solved Past Papers MCQsThe Seal affixed on important letters by the Prophet (SAW) was kept in the custody of:A. Hazrat Ali (R.A) B. Hazrat Qais (R.A) C. Hazrat Khuzaifa (R.A) D. Hazrat Bilal (R.A) Who was the last Commander in Chief in Ghazwa-e-Mauta?A group of eight bits is called _______