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Outside of cooking utensils are generally left black from below because
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- it is difficult to clean daily.
- black surface is a good conductor of heat.
- black surface is a poor conductor of heat.
- black surface is a good absorber of heat.
- it is difficult to clean daily.
Correct Option: D
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.
