Carbon reacts with oxygen to give carbon dioxide. This is an example of:
[1 mark]
A. Displacement reaction
B. Double displacement reaction
C. Decomposition reaction
D. Combination reaction

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Solution

Correct answer: Option D. Combination reaction
If two or more reactants combine to form a single product then it is a combination reaction. The general representation of this reaction is given below:
$A+B \to AB$
One mole of carbon reacts with one mole of oxygen to form carbon dioxide. The reaction is as follows:
${C (s) + O}_{2} (g) \to {CO}_{2} (g)$
This is a combination reaction since two reactants are combining to form a single product.

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