Oxygen cylinder color:
Ans: (a) Black body white shoulderRef: Miller's Anaesthesia 7th ed. / 675GasColor CodePin index positionBodyShoulderOxygenBlackWhite2,5Nitrous oxideBlueBlue3, 5CO2GrayGray1,6HeliumBrownBrown2,5AirGreyWhite/black quartered1,5
Black body white shoulder
White body black shoulder
Brown body and shoulder
Blue body and shoulder
Local and Regional Anesthesia