7. Which of the following containing same amount of boiling water is likely to cool first and
a) A beaker whose surface is covered with aluminum foil
b) A beader whose surface as painted black
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2
Answer:
a beaker whose surface is covered with Aluminium foil
Answered by
3
Answer:
option is a not b
because it is painted black and black can keep the water hot it also extract heat from the air, sun too
and about aluminum
An aluminum foil keeps the food warm, but placing the foil directly on the object or food doesn't help much. ... It doesn't only keep the food warmer for long, but also keep things cold.It acts as barrier to the oxygen and air which can transfer heat to the cold or frozen food.
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