Methane (natural gas) is the most commonly used gas for residential heating. In rural areas where there are no pipes carrying natural gas and in recreational vehicles, propane and butane are commonly used.
blue colour flame....
what
When the flame takes on the color of blue this means that the fire is at the highest temperature. The fire is at its hottest and may take lesser time to heat whatever needs to be heated.
My answer is luminous flame because it is used commonly here in our country Philippines but it is never be used for heating because it deposits too much soot. But it is easier to see, less hot and safer.
The copper flame has a more energetic radiation.
yellow
A luminous flame
When the flame takes on the color of blue this means that the fire is at the highest temperature. The fire is at its hottest and may take lesser time to heat whatever needs to be heated.
DIESEL is more economical than normal petrol/gas
My answer is luminous flame because it is used commonly here in our country Philippines but it is never be used for heating because it deposits too much soot. But it is easier to see, less hot and safer.
"economical" has no comparative or superlative form. You would say "more economical" or "most economical."
A yellow flame is named as a safety flame as it isn't as hot as the blue flame
a complete flame or a blue flame
Non luminous flame
temperature and the amount of oxygen. it depends on what kind of flame it is, like if its a gaseous flame or wood flame.
Blue flame. because it does not have carbon
The noun 'flame' is a singular, common, concrete noun; a word for a thing.
The copper flame has a more energetic radiation.
The two types of flames a Bunsen burner can produce are a luminous, yellow flame and a "roaring" blue flame. The blue flame is much hotter than the yellow flame.