What substance speeds up a reaction without being consumed? 👤 By The Quiz Wire ✅ Fact Checked 📊 Difficulty Medium 📅 Last Updated 01 Dec 2025 A. Isomer B. Allotrope C. Catalyst D. Solvent Check Answer 💡 Explanation: A catalyst increases reaction rate without undergoing permanent chemical change. 📚 Topics: Chemistry Science 🎯 Exams: CSS GEN NTS PMS