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Question

Substance X produces a ringing sound when struck with a hammer, while substance Y does not. What are X and Y made of?

A
X: Aluminium, Y: Carbon
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B
X: Iron, Y: Aluminium
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C
X: Carbon, Y: Iron
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D
X: Iodine, Y: Iron
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Solution

The correct option is A X: Aluminium, Y: Carbon
X produces a ringing sound ⇒ Made up of metal(s)
Example: Iron, Aluminium

Y does not produce a ringing sound ⇒ Not made up of metal(s)
Example: Carbon, Iodine

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