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Q: Why is the flame Yellow the air intake is close what does this indicate?
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What does a yellow flame indicate on a gas furnace?

its hot!


Is the yellow flame on a Bunsen burner the unburnt gas?

No. The yellow flame is actually due to incomplete combustion because of a lack of oxygen gas (air intake) and as a result carbon particles (soot) get ignited causing the yellow flame.


What does a yellow flame mean on a gas boiler?

It means you have too much air intake It means you have too much air intake


What does a yellow flame on a gas boiler mean?

It means you have too much air intake It means you have too much air intake


What color will a flame produce if there is limited air?

Limited oxygen intake in a lit Bunsen burner will emit a luminous, or yellow, flame. This type of flame is not usually used in the laboratory.


How can a student change a luminowhat would need to be done to a Bunsen in order to change a luminous yellow flame into a non luminous blue flameus yellow flame into a non luminous blue flame?

A blue flame contains lots of oxygen compared to the yellow flame. So the only thing you should do is decrease the oxygen supply


Do you close the ear hole to get a yellow or blue flame after a Bunsen burner has been lit?

blue


What does orange in the flame on a gas furnace indicate?

yellow flame needs more air or cleaned orange flame could indicate moisture in the fuel if propane have your tank treated your L.P. dealer should be able to do this also I have seen this when people use hemidfers the orange is burnning of the minerals in the water


What kind of flame is a yellow flame called?

A yellow flame is named as a safety flame as it isn't as hot as the blue flame


What are the two types of flame?

Blue Flame=Can't see (hotter then yellow flame) Yellow Flame (safety flame)=visible


Is a yellow flame of a Bunsen burner hotter than the blue flame?

No, a yellow flame is colder than a blue flame.


How do you get blue flame to yellow flame?

You reduce the supply of fuel. A "yellow" flame is a lot cooler than a "blue" flame. As it pertains to Chemistry, the dominant color for a nonluminous flame (yellow) is blue.