Yes it is
It stops the gas supply to the burner when there is no flame sensed by the thermocouple inside the burner.
The blue flame of the Bunsen burner is when it is hottest. The yellow flame is the safety flame. you should always start the burner on the safety flame which is produced when the holes on its base are closed.
you would use the safety flame when not heating anything because the blue flame is for heating because its hotter than yellow.
because the safety flame will do less harm compared to a roaring blue flame which burns at a hotter temperature. The tip of the dark blue bit in the blue flame is the hottest (The safety flame is the yellow one)
The flame on a Bunsen burner should be blue when not in use. If the flame is yellow, it may indicate a problem with the burner, such as not enough air mixing with the gas, which can be a safety hazard.
An open flame above an air hole on a Bunsen burner is called a roaring flame. It occurs when the air hole is fully open and allows for more oxygen to mix with the gas, creating a hotter and louder flame. Adjusting the air hole can help control the flame temperature and intensity.
To change from a safety flame to a roaring flame on a gas stove, increase the gas flow by turning the knob clockwise to allow more gas to feed into the burner. Then, use a long match or a gas lighter to ignite the gas. Adjust the knob to regulate the flame size to achieve the desired roaring flame.
Open the air hole at the base of the Bunsen burner. Turn on the gas supply and ignite the burner with a striker or a match. Adjust the air hole to control the flame size and type (safety flame or roaring flame). When finished, turn off the gas supply and close the air hole to ensure safety.
To create a safety flame on a Bunsen burner, adjust the air hole to allow more air to mix with the gas. This will produce a hotter, lighter blue flame rather than a yellow, sooty flame. Adjust the gas flow until the flame burns steadily without flickering or making noise.
gas
The sliding collar on a Bunsen burner helps control the air flow to the burner, regulating the flame intensity and preventing potential accidents from uncontrolled gas flow. This feature enhances safety by allowing users to easily adjust and extinguish the flame.
The orange flame in a Bunsen burner is called a "safety flame." It occurs when the air hole is partially closed, resulting in incomplete combustion of the gas. This flame is typically used when needing a less intense heat source.