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By the end of 2002 the public transport ...

By the end of 2002 the public transport of Delhi switched over to a new fuel. Name the fuel. Why is this fuel considered better? Explain.

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**Step-by-Step Solution:** 1. **Identify the Fuel:** By the end of 2002, the public transport system in Delhi switched over to **Compressed Natural Gas (CNG)**. 2. **Reason for the Switch:** The switch to CNG was primarily due to the severe air pollution problem in Delhi. The city was one of the most polluted in the world, largely due to emissions from vehicles using petrol and diesel. ...
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