Which of the following gases can be used for storage of fresh sample of an oil for a long time?
(a) Carbon dioxide or oxygen
(b) Nitrogen or oxygen
(c) Carbon dioxide or helium
(d) Helium or nitrogen
NCERT Class X
Science - Exemplar Problems
Chapter_Chemical Reactions And Equations
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nitrogen and oxygen option b
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d is the answer please let me know if it is right
akanksha36:
mark it if right
Answer is b
ok thanks
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