ature 4. Humiditya 3 , 4b 1, 2 ,4c 2,3 ,4d 1,2 ,376id 3692Boyle's law is directly applicable in case of:a hyperventilation with increasing altitudeb the occurance of decompression sickness at high altitudec the occurance of hypoxia with increasing altituded the expansion of trapped gasses in the human body with increasing altitude77id 3693Dalton's law explains the occurance of :a creepsb bendsc decompression sicknessd altitude hypoxia7840.2. Basic aviation physiology and health maintenance 2002/12/22 Page 13 of 139id 3694Henry's Law explains the occurence of:a hyperventilationb diffusionc decompression sicknessd hypoxia79id 3705Oxygen, combined with hemoglobin in blood is transported bya red blood cellsb plateletsc blood plasmad white blood cells80id 6252The composition of the atmosphere at 50 000 ft isa 78% oxygen, 21% nitrogen, ~1% argon, 0.3% carbon dioxideb 78% nitrogen, 21% oxygen, ~1% argon, 0.3% carbon dioxidec 78% oxygen, 21% argon, ~1% nitrogen, 0.3%carbon dioxided 78% nitrogen, 21% oxygen, ~1% argon, 0.03% carbon dioxide81id 6253The composition of the atmospherea is constant up to ~100 kmb is constant up to ~500 kmc changes proportional to the atmospheric pressured changes above FL 50082id 6254The atmospheric pressurea increases about exponentially with increasing altitudeb is constant up to about 100 kmc decreases about exponentially with increasing altituded decreases linearly from sea level up to the tropopause83id 6255The atmospheric temperaturea increases from sea level up to 1000 kmb decreases from the tropopause to the stratopausec remains constant from sea level up to the tropopaused increases from the stratopause to the mesopause84id 6256The temperature lapse ratea within the stratosphere is ~2C per 1000 ftb within the mesosphere is ~2F per 1000 ftc within the troposphere is ~2F per 1000 ftd within the troposphere is ~2C per 1000 ft8540.2. Basic aviation physiology and health maintenance 2002/12/22 Page 14 of 139id 6257The following statement about atmospheric humidity is true:a the maximum absolute humidity at sea level is 100%b cold air can retain more water than hot airc the relative humidity measures percentage of water vapor saturationd the absolute humidity measures percentage of water vapor saturation86id 6258The following statement about relative humidity is false:a man feel comfortable at a relative humidity of 60......70%b if an air mass is cooled its relative humidity increasesc if an air mass is warmed, its relative humidity increasesd during a long haul flight, relative humidity in the cockpit is very low87id 6259The atmospheric pressurea at 18 000 ft is half the amount of the pressure at 34 000 ftb at 27 000 ft is half the amount of the pressure at sea levelc at sea level is half the amount of the pressure at 18 000 ftd at sea level is twice the amount of the pressure at 18 000 ft88id 6261Boyle's law statesa the volume of a gas is proportional to its pressureb the pressure of a gas is inversely proportional to its temperaturec the temperature of a gas is proportional to its volumed the volume of a gas is inversely proportional to its pressure89id 6262Henry's law statesa the volume of a gas is inversely proportional to its pressureb the quantity of a gas dissolved in a liquid is proportional to the temperature of the gasc the quantity of a gas dissolved in a liquid is inversely proportional to the pressure of the gasd the quantity of a gas dissolved in a liquid is proportional to the partial pressure of the gas90