Storage of biological tissues such as blood, organs, semen requires low temperature which is achieved upon the usage of
- A. Liquid nitrogen ✓
- B. Solid carbon dioxide
- C. Liquid air
- D. Helium
Correct Answer: A. Liquid nitrogen
Explanation
Liquid nitrogen boils at a very low temperature of -196^\circ C (77 K) and is widely used as a cryogen for the cryopreservation of biological tissues, effectively halting biological decay.
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