Where is the burning splint held when a test tube of gas is tested for hydrogen?
In the middle of the test tube
At the open end of the test tube
Under the base of the test tube
Just above the bench, beside the tube
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.