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

1

Answers

2015-05-28T16:47:40+05:30
(d) Helium or nitrogen is the answer.........
1 5 1