What is absolute zero in Celsius? By Kalsoom Tahir 🌐 Source Physics Knowledge Base ✅ Fact Checked 📊 Difficulty Medium 📅 Last Updated 13 Aug 2026 A. 0°C B. -100°C C. -273.15°C D. -373.15°C Check Answer 💡 Explanation: Absolute zero (0 Kelvin) corresponds to approximately -273.15 degrees Celsius. 📚 Topics: Physics Science 🎯 Exams: CSS GEN NTS PMS