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Q. |
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? |
A. | Lead |
B. | Glass |
C. | 37,500 kg |
D. | Iron |
E. | Brass |
Answer» D. Iron |
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