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प्रश्न
Which of the following gases can be used for storage of fresh sample of an oil for a long time?
विकल्प
Carbon dioxide or oxygen
Nitrogen or oxygen
Carbon dioxide or helium
Helium or nitrogen
उत्तर
Helium or nitrogen
Explanation -
Both helium (He) and nitrogen (N2) can be used. In their presence, rancidity of fresh sample of an oil will not take place.
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