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G3 Quiz 10

G3 Quiz 10

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Question 1 of 10

1. Question
1. What is the flammability range of CO
- a)4% to 14%
- b)2.5 % to 5.5%
- c)12% to 74%
- d)23.5% to 10%
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Question 2 of 10

2. Question
1. What are the products of complete combustion
- a) carbon dioxide, nitrogen, soot, heat
- b) heat, water, hydrogen, oxygen
- c)water, carbon dioxide, oxygen, dioxide
- d)carbon dioxide, water, heat
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Question 3 of 10

3. Question
1. What is needed to start combustion
- a) fuel, carbon dioxide, air
- b)ignition, air, fuel,
- c) fuel, air, hydrogen,
- d) ignition, propane, nitrogen
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Question 4 of 10

4. Question
1. What is the air needed to operate a gas appliance safely
- a) primary air, mixing air, free air,
- b)combustion air, excess air, dilution air
- c) secondary air, primary air, natural air
- d)venting air, oxygen, excess air
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Question 5 of 10

5. Question
1. What is the boiling point of natural gas
- a)-258 c
- b)-258 f
- c)257 f
- d)285 f
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Question 6 of 10

6. Question
1. What is the relative density of propane gas
- a) 152
- b)0.6
- c)1.52
- d)0.06
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Question 7 of 10

7. Question
1. What is the air comprised of
- a)20% nitrogen 8% oxygen
- b)80% nitrogen 20% oxygen
- c) 80% oxygen 20% nitrogen
- d) 80 hydrocarbon 20% excess air
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Question 8 of 10

8. Question
1. What are the products of incomplete combustion
- a)carbon dioxide, water, soot, heat
- b)carbon monoxide, soot, water, air
- c)soot, aldehydes, carbon monoxide, heat
- d)aldehydes, carbon monoxide, soot
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Question 9 of 10

9. Question
1. What type of air is premixed with gas prior to ignition
- a)excess air
- b) primary air
- c) combustion air
- d)dilution air
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Question 10 of 10

10. Question
1. What type of air surrounds the flame for combustion
- a)venting air
- b)post secondary air
- c)secondary air
- d)outside air
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