This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
True about N2O cylinder – a)  Pressure is 2200 PSI b) Blue in colourc) Gas in liquid formd) Pin index 3.5e) It is flammable 
Select and explain. 
A. abc, B. bcd, C. ac, D. bd
B: bcd
Answer: B: bcd 
Explanation: N2O cylinder has following features :-


Filled in liquid form
Colour is blue
Capacity → E cylinder → 1590 lit, H cylinder → 15800 lit
Pressure is 760 psi
Pin index is 3.5