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प्रश्न
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
स्पष्ट कीजिए
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उत्तर
As diamond is extremely hard, it can be used to cut and grind other hard materials or metals. Hence, it is used in rock-drilling equipment to drill holes in the rocky layers of the Earth. Graphite being soft cannot be used to cut or grind.
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