2015 Coal First Aid Statements No. 5
Taken from the 2015 National Coal First Aid Contest Rules


Progress Indicator:
Question 4 of 20

4.  ____________ determines where a gas will stratify in still air in the mine (whether it will rise or fall).

Choices:
  1. The atomic number
  2. The chemical index
  3. Poisson’s Ratio
  4. Specific gravity
  5. None of the above


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