3. The substances which get oxidised easily can be kept for longer duration by:
(a) Adding oxygen and keeping them in sun for few days.
(b) Adding nitrogen and keeping them in sun for few days.
(c) Adding oxygen and keeping them in airtight containers
(d) Adding nitrogen and keeping them in airtight containers.
Please help me out
Answers
Answer
d) Adding nitrogen and keeping them in airtight containers.
Explanation
Adding oxygen would not help because addition of oxygen is oxidation itself. Thus, substance would easily get oxidised which we don't have to do here.
Keeping them open in sun also helps in oxidation hence we won't keep them open in sun.
Nitrogen gas acts inert and thus is a good antioxidant. Keeping substance in airtight containers with nitrogen added in container would prevent oxidation. Thus, option d is our answer.
Answer:
(C) Adding oxygen and keeping them in air-tight sealed containers.
Explanation:
Adding oxygen will oxidise the substance for the requirement and keeping it in air-tight sealed containers will not allow other gases like Carbon dioxide, Argon and ozone to enter inside the container which will protect the substance from any disturbance.
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