which of the following gases cannot be called as a hazardous gas ?
a nitrogen dioxide
b sulphur dioxide
c carbon dioxide
d oxygen
answer which one is correct option
Answers
Answered by
1
oxygen
-_-_-_-_-_---"_-_--_-_
Answered by
0
Answer:
d. oxygen is the correct answer
Explanation:
it's needed for survival of humans
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