HomePPSC Past PapersWhich of the following gases’ is used for refrigeration? 4. Which of the following gases’ is used for refrigeration?By Admin / September 20, 2025 A. Chlorine B. Ammonia C. Phosphine D. Carbon dioxide ✅ The correct answer is option Ammonia.
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