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Q. |
The base of an electric iron is brightly polished mainly - |
A. | to make it smooth and frictionless |
B. | to make it rust-proof |
C. | to reduce heat loss by radiation |
D. | to make it more durable |
Answer» C. to reduce heat loss by radiation | |
Explanation: Polished surfaces are poor radiators of heat. So loss of heat on that account is reduced and the electric iron remains hotter than otherwise. |
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