FP-C practice questions With Complete Solutions

Which of the following statements is correct regarding gases as altitude increases ? A. The percentages and total pressure of gases are increased B. The percentages of gases increase as the total gas pressure decreases C. The percentages of gases are unchanges, but the total pressure of the gases decreases. D. The percentages of gases decrease and the total gas pressure remains the same. correct answer: C What percentage of the the atmosphere contains Nitrogen? correct answer: 78% Gravity is: correct answer: The force created by the combined weight of all atmospheric gases upon the surface of the earth. Barometric pressure is: correct answer: The weight or force exerted by the atmosphere at any given point. (Physiologic) Efficient Zone correct answer: Sea level to 10,00 feet (physiologically) Deficient Zone correct answer: 10,000 to 50.000 feet Space equivalent zone correct answer: 50,000 to 250,000 feet Space correct answer: > 250.000 feet The development of gas bubbles within the body at high altitudes is best explained by: A. Boyle's law B. Charles's law C. Henry's law D. Dalton's law correct answer: C. Henry's law During a rapid decompression, the rapid change in temperature is best explained by: A. Boyle's law B. Charles's law C. Henry's law D. Dalton's law correct answer: B. Charles's law Positive G forces correct answer: Blood pools in the lower extremities increasing intravascular pressures and stagnant hypoxia. Can occur during rapid ascent, or turbulence that forces the aircraft upward rapidly. Negative G forces correct answer: blood pools in the upper body and may precipitate a headache. Can occur during rapid descent, or turbulence that forces the aircraft downward rapidly. You are exposed to 92 decibels at work, what is the maximal time of unprotected exposure allowed before you are at risk? A. 1 hour B. 2 hours C. 3 hours D. 4 hours correct answer: B. 2 hours