Diesel fuel vapors _________

Diesel fuel vapors __________.

Question 1 / 205eccef9ebacbc34ba4d465c9

Question 1 of 205eccef9ebacbc34ba4d465c9

Diesel fuel vapors __________.

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Question 1 of 20

5eccef9ebacbc34ba4d465c9

Diesel fuel vapors __________.

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🔍 Key Concepts

• Vapor density compared to air for common marine fuels • Difference between flash point and auto-ignition temperature • Basic fire triangle: fuel, oxygen, ignition source (spark/heat)

💭 Think About

• Look at which choices make absolute claims like 'can not' or 'nontoxic in all concentrations' and think about whether that sounds realistic for any flammable fuel vapor. • Consider where fuel vapors tend to collect on a vessel (bilges, low areas, overhead) and what that tells you about whether they are heavier or lighter than air. • Think about whether a spark can ignite a flammable vapor below its auto-ignition temperature, as long as the vapor-air mixture is within the flammable range.

✅ Before You Answer

• Eliminate any option that says fuel vapors are never toxic or can not be ignited under common conditions. • Recall that many hydrocarbon vapors (including diesel and gasoline) have a specific gravity of vapor relative to air that determines whether they sink or rise. • Verify in your study materials whether diesel vapor tends to settle in low spaces or rise toward the overhead.

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Question 1 of 20

Diesel fuel vapors __________.

can not be ignited by a spark unless the vapor is in a confined space

are nontoxic in all concentrations

can not be ignited by a spark unless they are at their auto ignition temperature

are heavier than air

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Question 1 / 205eccef9ebacbc34ba4d465c9

Question 1 of 205eccef9ebacbc34ba4d465c9

Diesel fuel vapors __________.

Back

Question 1 of 20

5eccef9ebacbc34ba4d465c9

Diesel fuel vapors __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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— No credit card needed