Which of the following gases is the least dense?
A) Carbon dioxide
B) Nitrous oxide
C) Helium
D) Air
Correct Answer:
Verified
Q5: Which of the following is not marked
Q6: Which size cylinder would be most appropriate
Q7: The color codes for cylinders are prescribed
Q8: Which of the following gases support combustion?
1)Air
2)Oxygen
3)Helium
4)Carbon
Q9: Which agency is responsible for the regulations
Q11: Which of the following gases is used
Q12: What is the cylinder color for nitrous
Q13: A plus sign after an examination date
Q14: Which gas has been used successfully in
Q15: A cylinder has "DOT 3AL 2015" stamped
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