__________ is the hardest substance.
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Keep practicing — related questions
- The hardest substance in world is
- The hardest substance obtained from nature is _______.
- The hardest substance available on the earth is _____.
- Which is the hardest substance known?
- The hardest substance available on earth is.....
- Which of the following substances is the hardest?
- Which of the following is the hardest substance known to man?
- the hardest substance present on earth is