Which Gas was first used in World War 1?
Correct answer: D. Chlorine
- A. Helium
- B. Hydrogen
- C. Nitrogen
- D. Chlorine
Explanation
Chlorine was the first poisonous gas used on a large scale in World War I, notably by Germany at the Second Battle of Ypres in 1915. The other gases listed were not the first chemical agents used in that war.
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Inventions and Discoveries covers the people, dates, principles and practical uses behind developments such as the wheel, printing press, telephone, electricity, radio, computer, internet, vaccines and space technology. It distinguishes an invention, which creates a device or process, from a discovery, which identifies something already present in nature.
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