Chemistry 5070 · O Level · Identification of ions and gases

Identification of ions and gases — practice question

Gas X shows the following characteristics. 1 colourless 2 it has no action on either damp red or blue litmus papers 3 it produces no change in limewater 4 flammable What is gas X?

Aammonia
Bchlorine
Chydrogen
Doxygen

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