Q.

Outside of cooking utensils are generally left black from below because –

A. it is difficult to clean daily.
B. black surface is a good conductor of heat.
C. black surface is a poor conductor of heat.
D. black surface is a good absorber of heat.
Answer» D. black surface is a good absorber of heat.
Explanation: The outside surface of a utensil used for heating is coated black so that it may absorb more heat and make heating quicker. This is because black surface is a good absorber of heat.
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