Question 1
What is the stoichiometric volume of oxygen (in cubic meters) required for the complete combustion of 5 m³ of methane (CH₄)?
Correct Answer:
10 m³
Question 2
If a fuel gas has a Lower Flammable Limit (LFL) of 4% and an Upper Flammable Limit (UFL) of 15% in air, which of the following concentration mixtures is too rich to support flame propagation?
Correct Answer:
18.0%
Question 3
Determine the stoichiometric mass of air required to burn 1 kg of propane (C₃H₈), assuming air contains 23.2% oxygen by mass.
Correct Answer:
15.6 kg
Question 4
A pool fire of liquid fuel with a surface area of 2.0 m² has a mass loss rate of 0.04 kg/m²·s. If the effective heat of combustion of the fuel is 42 MJ/kg, calculate the heat release rate (HRR) of the fire.
Correct Answer:
3.36 MW
Question 5
Under constant pressure stoichiometric conditions, carbon monoxide (CO) reacts with oxygen to form CO₂. Given the enthalpy of combustion (ΔHc = -283 kJ/mol) and assuming a mean molar heat capacity (Cp) for CO₂ of 45 J/mol·K, what is the theoretical adiabatic temperature rise (ΔT) of the product?
Correct Answer:
6,289 K
Question 1
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Prepare with the IFE Level 4 Fire Engineering Science Practice Questions - IFE Level 4 Certificate in Fire Engineering Science Exam practice quiz. This question bank includes 100 questions covering water, calculate, heat, fire, and rate. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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IFE Level 4 Fire Engineering Science Practice Questions - IFE Level 4 Certificate in Fire Engineering Science Exam

This practice set contains 100 questions from the matching question bank and focuses on water, calculate, heat, fire, and rate. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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