68th BPSC Prelims (2023), question 95

🔬 Science & Technology

95. Which of the following statements about diamond and graphite is true?

    1. They have same crystal structure.
    2. They have same degree of hardness.
    3. They have same electrical conductivity.
    4. More than one of the above
    5. None of the above
    Show answer

    Answer: E — None of the above

    Diamond and graphite, though both pure carbon, differ in crystal structure, hardness and conductivity, so none of the three statements is true.

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