Which of the following statements about graphite and diamond is true?
- AThey have the same crystal structure.
- BThey have the same hardness.
- CThey have the same electrical conductivity.
- DThey can undergo the same chemical reaction.
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (d) They can undergo the same chemical reaction.
Explanation
Diamond and graphite are allotropes of carbon with different structures – diamond is tetrahedral and hard, graphite is layered, soft and conducts electricity.
Being the same element, both share identical chemical properties and undergo the same chemical reactions, while their physical properties differ.