Environmental Science Practice Exam 2026 – Complete Prep for Dual Enrollment

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards

From $12.50Unlock all

Session length

1 / 20

What does a vapor recovery nozzle do?

Filter exhaust

Increase octane rating

Air pollution control device on a gasoline pump that prevents fumes from escaping into the atmosphere when fueling a motor vehicle

Vapor recovery nozzles are designed to capture the vapors that come off gasoline as you fuel and keep them from escaping into the air. They seal with the car’s filler neck and route the fumes back to the station’s storage system or through a carbon canister for processing, instead of letting them vent to the atmosphere. This reduces emissions of volatile organic compounds, which contribute to smog and air pollution. It isn’t about filtering engine exhaust, changing octane, or removing particulates from the air.

Remove particulates from the air