Question

Do
...
1. A blue flame on a burner shows
combustion.​

Answer 1

Answer:

it shows complete combustion

Answer 2

$\sf{Answer}$

• blue gas flame with a hydrocarbon gas when you have enough oxygen for complete combustion. When you do have sufficient oxygen, the gas flame appears blue because complete combustion creates enough energy to excite and ionize the gas molecules in the flame.

$\sf{Answer\:by\:UnicornRahuL}$