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The source of energy that keeps the furnace the cleanest is __________

(a) Electricity

(b) Water

(c) Air

(d) Sunlight

This question was posed to me in class test.

This intriguing question originated from Raw Materials for Foundry in chapter Foundry Introduction of Foundry and Forging

1 Answer

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The correct answer is (a) Electricity

For explanation: In a foundry, electricity is the easiest and the most expensive source of energy available. When the furnaces are electrically powered, there is no amount of smoke found and the particulate matter does not settle down. Hence, it keeps the furnaces clean.

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