Question

Arrange the different regions of a flame in increasing order of temperature
a) middle region <inner region < outermost region
b) outermost region <inner region < middle region
c) inner region < outermost region < middle region
d) inner region < middle region < outermost region​

Answer 1

Answer:

inner region < middle region < outermost region

Explanation:

Answer 2

The temperature of different regions of a flame in increasing order is- d) inner region < middle region < outermost region.

• A candle flame is divided into three regions on the basis of colour of different regions. These regions are- innermost region, middle region and outermost region.
• Innermost region: It is the innermost part of candle flame that is black in colour due to presence of unburnt particles. Combustion does not occur due to less or no supply of oxygen. Hence, this region is least hot.
• Middle region: It is the middle part of the flame that is yellow in color. Due to limited oxygen, partial combustion occurs. Hence, it has moderate temperature.
• Outermost region: It is the outermost part of the flame that is blue in colour. Due to availability of oxygen, complete combustion occurs and hence, it is the hottest region of flame.