Safety pin index for oxygen cylinder is?: (A) 2, 5, (B) 3,5, (C) 1,5, (D) 1,4
Answer is A. Ans. is 'a' i.e., 2, 5 Gas Pin index Oxygen 2,5 Nitrous oxide 3,5 Cyclopropane 3, 6 Air 1, 5 Nitrogen 1, 4 Entonox (50% 02 + 50%N,0) Single central (7) Carbon dioxide (<7.5%) 2, 6 Carbon dioxide (> 7.5%) 1, 6