Question

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that
(a) the food is not cooked completely.
(b) the fuel is not burning completely.
(c) the fuel is wet.
(d) the fuel is burning completely.

Answer 1

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that the fuel is not burning completely.

Answer 2

Answer:

The bottom of the vessel is getting blackened outside because the fuel is not burning completely.

Option B

Explanation:

When any fuel that burns below its burning or low temperature for a long time it starts to deposit soot on the surface of the vessel, due to incomplete burning of hydrocarbons in the heating place.

When fuel doesn’t burn properly it start to forms incomplete burning fumes or black fumes that deposit on the bottom surface of the pot, to prevent the release of black burning gas release we need to burn the fuel at its burning temperature or medium flame.