HomePPSC Past PapersThe hardest substance known is: 40. The hardest substance known is:By Admin / September 20, 2025 A. Diamond B. Steel C. Iron D. Platinum ✅ The correct answer is option Diamond.
38. Which article of the 1973 constitution of Islamic Republic of Pakistan prohibits all forms slavery, Forced labour and child labour Leave a Comment / PastPaper 02, PPSC Past Papers / By Admin