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प्रश्न
Why is the use of diesel and petrol as fuels in automobiles being replaced by Compressed Natural Gas (CNG) in big cities?
एक पंक्ति में उत्तर
उत्तर
It is because when CNG burns, it produces harmful products in very small amount. It is a clean fuel because it burns without producing smoke. The use of CNG as fuel in automobiles has reduced air pollution In big cities.
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