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प्रश्न
Which is the hardest mineral?
पर्याय
Diamond
Granite
Basalt
Gabbro
MCQ
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उत्तर
Diamond
Explanation:
Diamond is a type of carbon that has its atoms arranged in a diamond cubic crystal structure. Another solid form of carbon known as graphite is the chemically stable form of carbon at ambient temperature and pressure, but diamond almost never transforms into it.
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