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Which of the following statement is correct?

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In the 1990’s, Delhi ranked first among the 41 most polluted cities of the world.

All the buses of Delhi were converted to run on CNG by the end of 2000.

Euro III norms, for example, stipulate that Sulphur be controlled at 350 parts – per-million (ppm) in diesel and 150 ppm in petrol.

Mass Emission Standards (Bharat Stage II which is equivalent to Euro-II norms) are applicable in all the cities of India.

answer is C.

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Detailed Solution

Euro III norms, for example, stipulate that sulphur be controlled at 350 parts-per-million (ppm) in diesel and 150 ppm in petrol.

All the buses of Delhi were converted to run on CNG by the end of 2002.

Mass Emission Standards (Bharat Stage II which is equivalent to Euro-II norms) are no more applicable in any of the cities of India.

In the 1990s, Delhi ranked fourth among the 41 most polluted cities of the world.

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