Testing For Hydrogen, Oxygen, Carbon Dioxide & Chlorine

The video tutorial explains how to test for the presence of various gases in the laboratory, including hydrogen, oxygen, carbon dioxide, ammonia, and chlorine. It highlights the importance of testing gases due to their colorless and odorless nature. The tutorial provides specific methods for each gas: hydrogen is identified by a squeaky pop sound, oxygen by relighting a glowing splint, carbon dioxide by turning lime water milky, ammonia by changing red litmus paper to blue and forming white smoke with hydrochloric acid, and chlorine by turning blue litmus paper red and bleaching it. The video concludes with a summary of these testing methods.

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