Question

Statement 1: Fake diamonds are identified easily using the thermal property of diamonds.

Statement 2: Diamond has five times more thermal conductivity than copper.

• A. Only statement 1 is true
• B. Only statement 2 is true
• C. Both statement 1 and statement 2 are wrong
• D. Statement 2 is the correct explanation for statement 1

Answer 1

The correct option is D

Statement 2 is the correct explanation for statement 1

Diamond is the hardest allotrope of carbon. The thermal conductivity of natural diamond is around 22 W/(cm.K) which makes the diamond five times better at conducting heat than copper[which has a thermal conductivity of 386 W/(cm.K)]. Thus using thermal conductivity we can identify fake diamonds.