A technician is checking an instruction sheet for tests of hydrogen, oxygen, carbon dioxide and chlorine.
Which test instruction must say that the material used should be damp?
The test for carbon dioxide
The test for chlorine
The test for oxygen
The test for hydrogen
89 exam-style questions on AQA GCSE Chemistry 8.2 Identification of common gases, covering 8.2.1 Test for hydrogen, 8.2.2 Test for oxygen, 8.2.3 Test for carbon dioxide, and 8.2.4 Test for chlorine. Each one has a worked solution and a mark scheme showing where the marks go.