Question

The chemical reaction that occurs when a mixture of gasoline and air is ignited by a spark is called a __ A. combustion reaction
B. single-replacement reaction
C. hydrogen mixture
D. decomposition reaction

Answer 1

A. Combustion Reaction

Answer 2

Answer: Combustion

Explanation:

A. Combustion is a type of chemical reaction in which fuel such as gasoline (which is a mixture of hydrocarbons) is reacted with oxygen to form carbon dioxide and water.

Example:  

$CH_4+2O_2 \rightarrow CO_2+2H_2O$

B. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

Example: $Zn+2HCl\rightarrow ZnCl_2+H_2$

D. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Example: $Li_2CO_3\rightarrow Li_2O+CO_2$