A blacksmith grinds the edges of an iron axe against a spinning wheel – InterviewSolution

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1.	A blacksmith grinds the edges of an iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated. We can say that it is a:
Answer» A blacksmith grinds the edges of an iron axe against a spinning wheel to sharpen it. Sparks of fire and heat are generated. We can say that it is a:

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