Dental Age hardening is a process in which heating is done: A Up to 200 - 450°C for 15 - 30 min and quenching in water B At 700°C for 10 -15 min and quenching in water C At 700°C for 1 hour and quenching in water D Above 700°C for 30 min and quenching in water 💡 Explanation Age hardening is a process in which heating is done: ✓ Correct Answer: A. Up to 200 - 450°C for 15 - 30 min and quenching in water