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Which is the hardest substance on the earth?
  • a)
    Gold
  • b)
    Iron
  • c)
    Diamond
  • d)
    Platinium
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which is the hardest substance on the earth?a)Goldb)Ironc)Diamondd)Pla...
Diamond is the hardest substance on the earth.
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Which is the hardest substance on the earth?a)Goldb)Ironc)Diamondd)PlatiniumCorrect answer is option 'C'. Can you explain this answer? for Railways 2025 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Which is the hardest substance on the earth?a)Goldb)Ironc)Diamondd)PlatiniumCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Railways 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which is the hardest substance on the earth?a)Goldb)Ironc)Diamondd)PlatiniumCorrect answer is option 'C'. Can you explain this answer?.
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