PADI Exercise 4-11

Question 1

Possible causes of contaminated air in my scuba cylinder include high levels of contamination in the source gas and ____

Answer 1

(d) getting it filled at an improper source

Question 2

During a dive, I begin to have a headache, feel ill and dizzy. Are these possible symptoms of contaminated air? Yes or No

Answer 2

Yes

Question 3

After a dive, my buddy feels ill and has cherry red lips and nail beds. After breathing oxygen, my buddy seems to be doing fine, so no other action is required. True or False?

Answer 3

False. The diver should have a medical attention in all cases of suspected contaminated air.

Question 4

To avoid contaminated air, I should have my cylinder filled only at reputable scuba air sources. True or False?

Answer 4

True