Which of these can provide100% O2?Which of these can provide100% O2?  mcq given below:

 

Q. Which of these can provide100% O2?

(a) Bag value mask alone
(b) Bag value mask with supplemental O2
(c) Oxygen via face mask
(d) partial rebreather mask

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Ans: (b) Bag value mask with supplemental O2  
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