Tanishk says if the gas flame is turned up very high, water will get hotter than usual — say 110°C…

Why

Tanishk's link makes sense from everyday experience — a bigger flame usually means things heat up more, so 'hotter flame, hotter water' feels like it should just keep going. But water has a fixed ceiling: at sea level it boils at 100°C, and once it reaches that point, extra flame doesn't push the temperature any higher — it just makes the water boil away faster, as bubbles and steam, while the liquid itself stays pinned at 100°C. The heat that would have raised the temperature instead goes into turning water into vapour. Test: put a cooking thermometer in a pot at a rolling boil, then turn the flame up further — the reading stays at 100°C, the pot just steams more furiously and empties quicker. His sister is right: water boils at one fixed temperature, and a stronger flame boils it away faster, not hotter.