Which of the following statements about diamond is true?
It is a good conductor of electricity.
It is a good conductor of heat.
It is soluble in water.
It has a low melting point.
Diamond is a good conductor of heat. Diamond is an excellent conductor of heat due to its high thermal conductivity, which is even higher than that of copper. However, it is not a good conductor of electricity as it is an insulator. Hence option B is the correct answer.
Option (A) is incorrect because diamond is a good conductor of heat.However, it is not a good conductor of electricity as it is an insulator. Hence option A is incorrect.
Option (C) is incorrect because diamond is not soluble in water. Hence option C is incorrect.
Option (D) is incorrect because diamond has a low melting point. Hence option D is incorrect.
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