Question

Which of the following is (are) incorrect?

• A. graphite is a bad conductor of electricity
• B. dry graphite in a vacuum is not slippery
• C. other adsorption of substances increases the friction as layers slid pass each other
• D. the graphite does not possess metallic properties

Answer 1

Answer: (A), (C), (D)

graphite is a bad conductor of electricity
other adsorption of substances increases the friction as layers slid pass each other
the graphite does not possess metallic properties

Carbon in graphite from is not hard but smooth and slippery, has hexagonal crystals of carbon. But in dry and vaccum condition it is non slippery.
Graphite is a good conductor of electricity due to electron delocalization between the carbon layers. This phenomenon is called aromaticity. This property resembles with that of metals. So we can say that it possesses metallic property.
Adsorption does not slide the layers in crystals in graphite.
Hence option A, C and D are correct.