Question

Assertion (A): Diamond is a good conductor of heat.

Reason (R): Carbon atoms are very closely packed in diamond.

• A. Both A and R are true and R is the correct explanation of A.
• B. Both A and R are true, but R is not the correct explanation of A
• C. A is true and R is false.
• D. A is false and R is true.

Answer 1

The correct option is A

Both A and R are true and R is the correct explanation of A.

Explanation for Assertion:

• Diamond is a good conductor of heat because there is strong covalent bonds between carbon atoms in a diamond crystal and low photon scattering.
• Hence , it is a good conductor of heat.

Explanation for Reason:

• In diamond each carbon atom is bonded to four other carbon atoms and forming rigid three -dimensional structure.
• Carbon atoms are very closely packed in diamond due to the presence of strong covalent bonds.

Hence both A and R are true and R is the correct explanation of A.

Hence the correct answer is (A).