CHEMCO Exit Exam • Set 5 Question 11 of 30

The (auto) ignition temperature is that temperature at which __________.

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Direct Answer

Option A: no spark or flame is required to ignite gas or vapor

The auto-ignition temperature is the lowest temperature at which a substance will spontaneously ignite in normal air without an external source of ignition, such as a spark or flame. This is a critical safety parameter detailed in ISGOTT.

All Options

no spark or flame is required to ignite gas or vapor (Correct Answer)

a fuel begins to give off explosive vapors

a fuel if ignited will continue to burn

a 1% mixture of the fuel with air will explode

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).

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