NGA 70 - AOCs & Properties of Natural
Gas Exam Questions and Answers
Specific Gravity Natural Gas - -0.6
- Specific Gravity Carbon Monoxide - -0.98
- Specific Gravity Air - -1.0
- Specific Gravity Propane - -3.5
- Specific Gravity Kerosene/Fuel Oil - -4.5
- Natural Gas can be transported in either - -Gas or Liquid
- Gases with a specific gravity greater than 1 tend to - -hug the ground
- Headaches, Dizziness, Loss of consciousness are symptoms of - -exposure
to high levels of natural gas
- Odorant added to natural gas before distribution to help aid in detecting
gas leaks - -Mercaptan
- Odor intensity can decrease by passing through - -sand, clay, or loam
- Odor intensity can decrease by presence of - -household chemicals,
kitchen or bathroom cleaners, some air freshners
- Odor Fade is caused by what in Steel Pipes - -internal rust deposits
- Odor Fade occurs in Plastic Pipes - -absorbed into or absorbed onto the
surface of the pipe until the pipe comes saturated
- Two Specific Reasons to know gravity of fuel gases (1) - -It can affect
combustion properties at burner tip
- Two Specific Reasons to know gravity of fuel gases (2) - -Can influence
safety if the gas is released into the atmosphere
- The major component of fuel gas - -hydrocarbons
- The major component of natural gas - -methane
Gas Exam Questions and Answers
Specific Gravity Natural Gas - -0.6
- Specific Gravity Carbon Monoxide - -0.98
- Specific Gravity Air - -1.0
- Specific Gravity Propane - -3.5
- Specific Gravity Kerosene/Fuel Oil - -4.5
- Natural Gas can be transported in either - -Gas or Liquid
- Gases with a specific gravity greater than 1 tend to - -hug the ground
- Headaches, Dizziness, Loss of consciousness are symptoms of - -exposure
to high levels of natural gas
- Odorant added to natural gas before distribution to help aid in detecting
gas leaks - -Mercaptan
- Odor intensity can decrease by passing through - -sand, clay, or loam
- Odor intensity can decrease by presence of - -household chemicals,
kitchen or bathroom cleaners, some air freshners
- Odor Fade is caused by what in Steel Pipes - -internal rust deposits
- Odor Fade occurs in Plastic Pipes - -absorbed into or absorbed onto the
surface of the pipe until the pipe comes saturated
- Two Specific Reasons to know gravity of fuel gases (1) - -It can affect
combustion properties at burner tip
- Two Specific Reasons to know gravity of fuel gases (2) - -Can influence
safety if the gas is released into the atmosphere
- The major component of fuel gas - -hydrocarbons
- The major component of natural gas - -methane
