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Exam (elaborations)

NFI GAS QUESTIONS AND CORRECT ANSWERS

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NFI GAS QUESTIONS AND CORRECT ANSWERS

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Uploaded on
November 23, 2025
Number of pages
2
Written in
2025/2026
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Questions & answers

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  • nfi gas questions and correct answers

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NFI GAS QUESTIONS AND CORRECT
ANSWERS
TheA2specificA2gravityA2ofA2propaneA2resultsA2in:
a.A2quickA2dissipation.

b.A2highA2ignitionA2temperature.

c.A2highA2flammabilityA2limits.

d.A2pooling.A2-A2Ans--d.A2Pooling

WhichA2ofA2theA2followingA2statementsA2isA2trueA2aboutA2the
relationshipA2betweenA2naturalA2gasA2andA2propane?
a.A2NaturalA2gasA2hasA2aA2higherA2heatA2valueA2thanA2propane

b.A2PropaneA2hasA2aA2higherA2ignitionA2temperatureA2than
naturalA2gas

c.A2PropaneA2hasA2aA2higherA2specificA2gravityA2thanA2naturalA2gas

d.A2NaturalA2gasA2requiresA2aA2higherA2airA2toA2fuelA2ratioA2than
propaneA2-A2Ans--c.A2PropaneA2hasA2aA2higherA2specificA2gravityA2thanA2naturalA2gas

WhatA2isA2theA2idealA2combustionA2ratioA2forA2naturalA2gas
combustion?
a.A24A2toA21
b.A210A2toA21
c.A214A2toA21
d.A224A2toA21A2-A2Ans--b.A210A2toA21

WhatA2isA2theA2termA2usedA2toA2describeA2theA2percentageA2of
fuelA2gasA2inA2theA2fuelA2andA2airA2mixtureA2thatA2willA2support
combustion?
a.A2HeatA2value
b.A2FlammabilityA2limits
c.A2IgnitionA2temperature
d.A2SpecificA2gravityA2-A2Ans--b.A2flammabilityA2limits

WhatA2isA2theA2nameA2ofA2theA2safetyA2odorantA2addedA2toA2gasA2for
protectionA2againstA2undetectedA2gasA2leaks?
a.A2Aldehydes
b.A2Mercaptan
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