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Thursday, 02 April 2026
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Two similar kettles containing equal masses of boiling water are placed on a table. If ...

Two similar kettles containing equal masses of boiling water are placed on a table. If the surface of one is highly polished and the surface of the other is covered with soot, Which of the following observations is correct
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  • A The two kettles will cool down at the same rate
  • B The polished kettle cools down more quickly by conduction
  • C The kettle covered with soot cools down more quickly because it is a good radiator
  • D The kettle covered with soot cools down more quickly by the process of heat convection
Correct Answer: Option C
Explanation:

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