Which of the following gases can be used for storage of fresh sampel of an oil for a long time?
A. Carbon dioxide or oxygen
B. Nitrogen or helium
C. Helium or oxygen
D. Nitrogen or oxygen
Answer:B
Which of the following gases can be used for storage of fresh sampel of an oil for a long time?
A. Carbon dioxide or oxygen B. Nitrogen or helium C. Helium or oxygen D. Nitrogen or oxygen