Heat Transfer MCQ: Four balls made of lead, glass, brass and iron made of same size, are heated to 100?C. They are simultaneously placed on a sheet of paraffin nearly 5 mm thick. Which ball will drop first?

Four balls made of lead, glass, brass and iron made of same size, are heated to 100?C. They are simultaneously placed on a sheet of paraffin nearly 5 mm thick. Which ball will drop first?

Correct Answer: Iron

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