Multiple choice

What is true about cryogen, which is given in hospitals to stimulate natural breathing?

  1. It contains 100% oxygen.

  2. It contains about 95% oxygen and rest is carbon dioxide.

  3. It contains 50% oxygen, and rest is carbon dioxide.

  4. It contains 95% oxygen and rest is nitrogen.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct