Understanding Candle and Gas Burner Flames

The video tutorial explores the differences between the flame of a burning candle and a gas burner. It conducts an activity to observe the zones of a candle flame, identifying three distinct zones: a dark zone with no burning, a luminous zone with a yellow flame due to partial combustion, and an outermost non-luminous zone that is blue and the hottest part of the flame where complete combustion occurs. The tutorial concludes by comparing these zones with those of a gas burner flame.

What is the color of the flame produced by a candle?

• Green

• Blue

• Red

• Yellow

Which zone of the candle flame is characterized by a brilliant yellow color?

• Dark zone

• Outer zone

• Luminous zone

• Non-luminous zone

In which zone of the candle flame does complete combustion occur?

• Dark zone

• Non-luminous zone

• Luminous zone

• Inner zone

What is the primary characteristic of the dark zone in a candle flame?

• It is the hottest part

• It is where no burning occurs

• It is the brightest part

• It is the outermost part

How does the flame of a gas burner differ from that of a candle?

• It has a yellow flame

• It has a green flame

• It has a red flame

• It has a blue flame