WBCS.LIVE practice question

In terms of thermal conductivity (k) and electrical conductivity (δ), diamond has

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. low k and high δ
  2. high k and low δ
  3. high k and high δ
  4. low k and low δ

Correct answer and explanation

Correct answer: high k and low δ

Explanation: ✅ Correct Answer: B. high k and low δ 📚 Explanation: Diamond is a unique material that has the highest 'thermal conductivity' (k) of any known solid, but it is an electrical insulator with very 'low electrical conductivity' (δ). This happens because its atoms are tightly bonded. The high thermal conductivity is due to strong covalent bonds that allow heat to travel quickly as vibrations. However, there are no free electrons to carry electricity.