Que. | The concentration of oxygen in expired air is |
- A. 0%
- B. 16%
- C. 21%
- D. 4%
Right Answer is :
✓ C. 21%
Views 👍 :277 Share : 
✒ To discuss this topic Comment
✕ Cancel
❖ Related Questions
➣ Leprosy containing 2-5 skin lesions is known ... ➣ The recommended level of fluoride in drinking ... ➣ Stage of the disease cycle represents the ... ➣ Most common mode of transmission of ascariasis ... ➣ Skin antiseptic which contains iodine is ... ➣ In following which is not a component ... ➣ Mantoux test is done to diagnose ... ➣ The PHN bag is an important tool ... ➣ Nurse will advise the mother to isolate ... ➣ Which activity is considered as health promotional ...