Question : Which of the following gases is used to inflate the car tyres?
Option 1: Nitrogen
Option 2: Argon
Option 3: Hydrogen
Option 4: Carbon dioxide
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Correct Answer: Nitrogen
Solution : The correct answer is Nitrogen .
Nitrogen is used to inflate car tyres because it is unreactive to the rubber and because the size of its molecules is larger than that of the air molecules, so it does not leak out easily.
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