Question

Which of the following gases is used to store human organs meant for transplantation at low temperatures in hospitals?

• A. Nitrogen
• B. Carbon dioxide
• C. Oxygen
• D. Argon

Answer 1

The correct option is A

Nitrogen

The explanation for the correct answer:

(A) Nitrogen

• It is a non-metal.
• It is the largest component of air.
• It constitutes about 78% of air.
• It is inert in nature.
• It is non-poisonous in nature.
• Liquid nitrogen is used as a refrigerant. It helps in the storage of human organs at low temperatures.

The explanation for the incorrect answer:

(B) Carbon dioxide- It is used to as refrigerant to preserve food items not parts of human body.

(C) Oxygen- It is used in combustion, respiration and many other important process.

(D) Argon- It is used in fluorescent flash bulbs.

Hence,, the correct option is (A).