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APC Exam DU0-001 Topic 1 Question 112 Discussion

Actual exam question for APC's DU0-001 exam
Question #: 112
Topic #: 1
[All DU0-001 Questions]

What are the three stages of combustion? (Choose three.)

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Suggested Answer: A, D, E

by Quinn at Jun 10, 2025, 08:49 PM

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Sheridan
25 days ago
As someone who's been playing with matches since I was five, I can tell you the correct answer is A, B, and E. Incipient, Back draft, and Visible smoke. Boom, literally.
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Karon
3 days ago
I never knew that, thanks for sharing your expertise!
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Marshall
7 days ago
I think you're right, those are the three stages of combustion.
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Francine
2 months ago
Hey, where's the 'Spontaneous Combustion' option? That's my personal favorite stage of combustion. Just kidding, I'll go with A, B, and E.
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Viola
1 months ago
User 2: Yeah, those are the correct stages. Good choice!
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Chu
1 months ago
User 1: Spontaneous combustion isn't one of the stages, but good one! I'll go with A, B, and E too.
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Micaela
2 months ago
Hmm, I'm going with B, C, and D. Back draft, Thermal flux, and Intense heat. Gotta love the scientific terminology, am I right?
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Jestine
2 months ago
I'm not sure about Thermal flux. I think it might be Back draft instead.
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Hyun
2 months ago
I agree with Jamie. Incipient, Intense heat, and Visible smoke make sense as the stages of combustion.
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Bettina
2 months ago
A, D, and E. Incipient, Intense heat, and Visible smoke. Come on, this is Combustion 101, people!
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Amber
2 months ago
Definitely A, B, and E. Incipient, Back draft, and Visible smoke are the classic stages of combustion. D is just a side effect, not a stage.
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Ezekiel
15 days ago
Exactly, D is more of a result of combustion rather than a stage itself.
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Carmelina
17 days ago
So, the key stages to remember are A, B, and E for combustion.
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Jeffrey
1 months ago
Thermal flux and Intense heat are important too, but not part of the classic stages.
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Staci
1 months ago
I agree, Incipient, Back draft, and Visible smoke are the main stages of combustion.
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Jamie
2 months ago
I think the three stages of combustion are Incipient, Intense heat, and Visible smoke.
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