Question

The contaminant not present in leaking gasoline is}

• A. benzene
• B. ethanol
• C. toluene
• D. methyl tertiary butyl ether

Hint:

BTEX compounds (Benzene, Toluene, etc.) and MTBE are major gasoline contaminants—remember this group.

Answer 1

The Correct Option is B

Concept: Leaking gasoline contains several toxic hydrocarbons and additives that contaminate soil and groundwater. Step 1:Identify common gasoline contaminants.}

• Benzene $\rightarrow$ Toxic aromatic hydrocarbon $\checkmark$
• Toluene $\rightarrow$ Present in gasoline $\checkmark$
• MTBE (methyl tertiary butyl ether) $\rightarrow$ Fuel additive $\checkmark$

Step 2:Check ethanol.
Ethanol is used as a fuel additive (blending agent), but it is not typically considered a contaminant in leaking gasoline. Final Answer: \[ {\text{ethanol}} \]