A flame is the visible gaseous part of a fire. It is a zone of combustion of gaseous substances accompanied by evolution of heat and light. All substances do not burn with a flame. Only those substances that vaporise during burning produce flame. A candle flame is taken to study the various zones of a flame.

Arrange X, Y and Z in increasing order of temperature.

Options

A. `X lt Y lt Z`
B. `Z lt Y lt X`
C. `Z lt X lt Y`
D. `Y lt Z lt X`

Answer

B

Explanation

`Z lt Y lt X`