Multiple choice

Which of the following is incorrect?

  1. Graphite can be converted to diamond.

  2. Charcoal, coke and carbon black are all different forms of graphite.

  3. CO2 can be evolved from graphite, but not from diamond.

  4. The elements carbon and sulphur react chemically to form the compound carbon disulphide.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Diamond is an allotrope of carbon which was first confirmed by the English chemist Smithson Tennant, who was the first to burn a diamond in air producing carbon dioxide. Thus, according to this statement, option (3) is incorrect.

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