Chemistry
Grade-8
Easy
Question
Which of the following application does not represent the uses of hydrogen?
- To prepare the clarified butter
- To manufacture the hydrogen chloride
- To extinguish the fire
- For cutting and welding metals
Hint:
To extinguish the fire
The correct answer is: To extinguish the fire
Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire. Fire is extinguished when the hydrogen supply has been shut off, as unburned gaseous hydrogen can result in an explosion. So, water is sprayed on adjacent equipment to cool it.
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