Question 200 - Meteorology - BPL Hot Air - Balloon Pilot License

Oxygen 78 % Water vapour 21 % Nitrogen 1 %
Oxygen 21 % Water vapour 78 % Noble gases / carbon dioxide 1 %
Nitrogen 21 % Oxygen 78 % Noble gases / carbon dioxide 1 %
Oxygen 21 % Nitrogen 78 % Noble gases / carbon dioxide 1 %

Training tests and timed exam simulations BPL Hot Air - Balloon Pilot License