General Knowledge
Medium
Question
Which Gas was first used in World War 1?
A
Helium
B
Hydrogen
C
Chlorine
✓ Official correct answer
D
Nitrogen
Community credibility
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A
Helium
No member explanations yet for this option.
B
Hydrogen
No member explanations yet for this option.
C
Chlorine
No member explanations yet for this option.
D
Nitrogen
No member explanations yet for this option.