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Q:- When oxygen (O²) is present in concentrations less than 19.5% the atmosphere is said to be oxygen deficient? 1- True 2- False

Health and Safety
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Question added by abdesalam Abdallah , Health and Safety Supervisor , Arabian Gulf Oil Company
Date Posted: 2016/10/25
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Safdar Khan

true19.5-percent-is-lower-limit-for-oxygen

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