Yellow soot is obtained when the holes of the burner are not clean. The combustion is incomplete. The yellow soot or yellow flame is because of unburnt carbon particles.
Soot particles are the result of incomplete combustion of carbon or organic compounds.
Soot
If you think to black soot this is formed from tiny carbon particles.
Soot (particles of carbon)
Soot's plural is soot.
Soot is often produced when burning wood.
You still have some soot on the very tip of your nose.
soot doors is provide to clean the outside of the water tubes and to remove the soot.
soot
I think soot and smog come from the air pollution.
Soot is the product of an incomplete combustion of carbon.
Be wary of that soot on the hearth.
Botten Soot died in 1958.
Eyolf Soot was born in 1858.
Eyolf Soot died in 1928.
Soot ashes and debris