Canadian Entry To Practice (CETP) Practice Test

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What type of liquid is propane classified as?

Hydrocarbon
Alcohol
Aqueous solution
Chlorinated solvent

The correct answer is: Hydrocarbon

Propane is classified as a hydrocarbon because it is composed solely of hydrogen and carbon atoms. Hydrocarbons can be either saturated or unsaturated compounds, and propane falls into the category of saturated hydrocarbons, specifically alkanes, where all carbon-carbon bonds are single bonds. In the case of propane, the molecular formula is C3H8, indicating that it has three carbon atoms and eight hydrogen atoms. The other classifications do not apply to propane. It is not classified as an alcohol, which would require the presence of a hydroxyl group (-OH) attached to a carbon atom. Additionally, propane does not form an aqueous solution since it does not dissolve in water to create a mixture where water is the solvent. Lastly, propane is not a chlorinated solvent, which would involve the presence of chlorine atoms in its molecular structure. Therefore, the classification of propane as a hydrocarbon accurately reflects its chemical composition and characteristics.