Question : Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?
Option 1: Helium
Option 2: Nitrogen
Option 3: Oxygen
Option 4: Hydrogen
Correct Answer: Hydrogen
Solution : The correct option is Hydrogen.
With a very low ignition temperature, Hydrogen gas is highly flammable and prone to spontaneous combustion. One of the most flammable gases is diatomic Hydrogen. Hydrogen is a very reactive substance that would ignite under the sun. Even little temperature rises have the potential to cause combustion.
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