History of Africa

Which colourless gas was deadly in world war 1?

The colourless gas that was deadly in World War 1 was chlorine. Chlorine gas was used as a chemical weapon by both sides in the war. It was first used by the Germans at the Battle of Ypres in April 1915. Chlorine gas is a highly toxic gas that can cause severe damage to the respiratory system, leading to death in severe cases.