Question

Match the following-
Column A. Column B
1. catching fire. flame
2. carbon. unburnt carbon
2. fuel vapour. ignition temp
3. luminous zone air pollution
4. fossil fuel. coal

Hi everyone I am really confused which one shall go with whom please help me☺️☺️
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Answer 1

Answer:

1. ignition temp

2. coal

3. air pollution

4. flame

5. unburnt carbon