Question

Which of the following will give carbon dioxide on being heated in an excess of oxygen?

• A. Diamond
• B. Graphite
• C. Charcoal
• D. All of these

Answer 1

The correct option is D

All of these

• All Diamond, Graphite, and Charcoal are pure forms of Carbon.
• These substances on heating in the presence of oxygen will undergo a combustion reaction.
• Reaction - $\mathrm{C}+{\mathrm{O}}_2\to {\mathrm{CO}}_2$
• Hence, all of these substances will give Carbon dioxide on reaction with oxygen.

Therefore, option (d) is correct.