A luminous flame causes the beaker to have soot at the bottom and the luminous flame also does not heat it up properly.
Non-luminous flame
luminous flame emits light, non-luminous doesn't
Non-luminous flame should be used for heating in the laboratory because the flame is steady and produce little or no soot.Non-luminous flame is very hot thus, it is recommendable to use for laboratory purposes.Luminous flame is unsteady while non-luminous flame is steady.Another reason of using non-luminous flame because the flame of non-luminous is blue, and not visible unlike the luminous flame which is yellow in colour and visible.
prevents soot generation
Because if you use luminous flames the beaker you use will have a soot at the bottom and it does not heat it up properly but instead of using non luminous flames it will be heated properly.
Because the luminous flame would interfere with the observations.
Non-luminous flame
luminous flame emits light, non-luminous doesn't
prevents soot generation
Non- luminous flame should be used as it is steady and produces little or no soot.
Because if you use luminous flames the beaker you use will have a soot at the bottom and it does not heat it up properly but instead of using non luminous flames it will be heated properly.
Non-luminous flame and Luminous flame
luminous flame
Non-luminous flame should be used for heating in the because the flame is steady and produce little or no soot. Non-luminous flame is very hot thus, it is recommen- dable to use for laboratory purposes. Luminous flame is unsteady while non-lumi- nous flame is steady. Another reason of using non-luminous flame because the flame of non-luminous is blue, and not visible unlike the luminous flame which is yellow in colour and visible.
-A non-luminous flame is when the air hole of the Bunsen burner is closed but a luminous flame is produced when the air hole is opened.-A luminous flame has an outer of orange colour and an inner of blue. A non-luminous flame has an outer of blue and an inner of orange.-A luminous flame produces soot while a non-luminous does not produce soot.-A luminous flame is weak and unsteady. A non-luminous flame is strong and steady.-A non-luminous flame is very hot while a luminous flame is not too hot.
because of the yellow flame, yellow is a bright coulor........... Scientific term......... The collar is closed to get luminous flame and collar open to get non- luminous flame....