Question

Which of the following accurately shows the development of poison gas in World War I? (1 point)
British gas themselves by accident due to shift in wind > development of shells to release chlorine gas at long range › chlorine gas released in cylinders at Ypres
development of shells to release chlorine gas at long range › chlorine gas released in cylinders at Ypres > British gas themselves by accident due to shift in wind
chlorine gas released in cylinders at Ypres > British gas themselves by accident due to shift in wind > development of shells to release chlorine gas at long range
chlorine gas released in cylinders at Ypres > development of shells to release chlorine gas at long range > British gas themselves by accident due to shift in wind

Answer 1

Correct answer:
chlorine gas released in cylinders at Ypres > development of shells to release chlorine gas at long range > British gas themselves by accident due to shift in wind

Reason: The first large-scale use was the German release of chlorine from cylinders at Second Ypres (April 1915). After that gases were adapted to be delivered in artillery shells for long-range use, and later many incidents occurred where wind shifts caused friendly troops (including British units) to be gassed.