<prompt> Residual volume of lung in an average adult male is: Repeat3.0 L0.9 L1.2 L1.9 L  <response>: AnsL C 1.2 L Ref: Davidson, 21st ed, pg 651Explanation:Refer Medicine 2013 question explanation.TLC: Volume of air in the lungs following maximal inspiration N 5-6LFVC: Maximum amount of air exhaled following maxima inspiration N 4.8LVT: Volume of air entering and leaving lungs during normal respiration N 500 mlRV: Volume of air remaining in the lungs after maximal expiratory effort 1.2LFRC; Volume of air within the lungs at the end of normal respiration 2.5-3LFEV: Volume of air exhaled in a given time during a forced vital capacity effort 