The hottest part of the gas flame is known as the blue zone. This is because the blue color of the flame is caused by the high temperature of the gases in this zone. The blue zone is located at the tip of the flame, and it is the smallest of the three zones in a gas flame. The other two zones are the non-luminous zone and the luminous zone. The non-luminous zone is located just above the burner, and it is where the gas is mixed with air. The luminous zone is located above the non-luminous zone, and it is where the gas is burned. The luminous zone is the hottest part of the flame, but it is not as hot as the blue zone.
The blue zone is the hottest part of the gas flame because it is where the gas is burned most completely. When gas is burned, it reacts with oxygen to form carbon dioxide and water vapor. The more complete the combustion, the more heat is produced. In the blue zone, the gas is burned almost completely, so it produces a lot of heat.
The blue zone is also the smallest of the three zones in a gas flame because it is where the gas is burned most quickly. The gas is burned quickly in the blue zone because it is in contact with a lot of oxygen. The oxygen in the air helps to speed up the combustion reaction.
The blue zone is the most important part of the gas flame because it is the hottest part. The heat from the blue zone is used to cook food, heat water, and melt metals.