Question

due to which effect does the smoke emitted by the combustion of the engine oil in a motorcycle sometimes appears blue in colour​

Answer 1

Answer:

Blue-gray color is created due to incomplete combustion. As gasket is damaged or a piston oil ring is worn out, engine oil is inflowing to a cylinder through a crack caused by wear and burns with fuel. Here blue (additive ingredients) and grey (distillates with high boiling points) colored gas is emitted.

Explanation: