Multiple choice

Kerosene lamp burns with a yellow flame because of the

  1. burning of hydrogen

  2. heating of wick

  3. incandescence of unburnt particles

  4. none of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kerosene lamps burn with a yellow flame due to incandescence - the glowing of unburnt carbon particles heated to high temperatures. These particles emit yellow light before being completely consumed.