Which of the conditions listed is necessary...

Question 1 / 205eccef9ebacbc34ba4d46251

Question 1 of 205eccef9ebacbc34ba4d46251

Which of the conditions listed is necessary for a substance to burn?

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Question 1 of 20

5eccef9ebacbc34ba4d46251

Which of the conditions listed is necessary for a substance to burn?

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🔍 Key Concepts

• Fire triangle: fuel, oxygen, and heat • Difference between flash point, fire point, and ignition temperature • Meaning of LEL (Lower Explosive Limit) and UEL (Upper Explosive Limit) for flammable vapors

💭 Think About

• Think about whether a solid or liquid actually burns, or whether it is the vapor above it that burns • Ask yourself: is having the right vapor/air mixture enough if there is no oxygen, or no heat? • Consider whether any one of the listed conditions alone is sufficient, or if all burning situations share more than one common requirement

✅ Before You Answer

• Verify what is required for the fire triangle to be complete • Check whether combustion can occur if the vapor/air mix is outside the LEL–UEL range • Confirm whether a substance can burn if it has heat and fuel, but no oxygen available

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Question 1 of 20

Which of the conditions listed is necessary for a substance to burn?

The temperature of the substance must be equal to or above its fire point

The mixture of vapors with air must be between the LEL and the UEL

The air must contain oxygen in sufficient quantity

All of the above

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Question 1 / 205eccef9ebacbc34ba4d46251

Question 1 of 205eccef9ebacbc34ba4d46251

Which of the conditions listed is necessary for a substance to burn?

Back

Question 1 of 20

5eccef9ebacbc34ba4d46251

Which of the conditions listed is necessary for a substance to burn?

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?

Quick actions

— No credit card needed