Flame Class Quiz

Flame is caused by burning of ??? substance

• solid

• liquid

• gas

• none of these

All combustible substances produce a flame. True or False?

• True

• False

Which of the following do not produce a flame?

• LPG

• coal

• wax

• magnesium

Which flame is luminous?

• yellow

• blue

• both

• none

What is the colour of the flame when the combustion is complete?

• yellow

• blue

• both

• none

Yellow flame is produced due to:

• carbon particles

• sulphur particles

• wax particles

• carbon dioxide

Structure of a flame can be divided into ??? zones

• 1

• 2

• 3

• 4

Which zone of the flame is the hottest?

• inner zone

• middle zone

• outer zone

• all of these

Which zone of the flame is the largest?

• inner zone

• middle zone

• outer zone

• all same size

Which zone of the flame is bright and luminous?

• inner zone

• middle zone

• outer zone

• all of these