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

The most polluted city in the world is :

Which of the following statement is not incorrect ? (a) In the 1990s, Delhi ranked fourth among the 40 most polluted cities of the world. (b) All the buses of Delhi were converted to run on CNG by the end of 2000. (c) Euro III norms , for example , stipulate that sulphur be controlled at 350 parts-per- million (ppm) in diesel and 150 ppm in petrol. (d) Mass Emission Standards (Bharat Stage II which is equivalent to Euro - II norms) are applicable in all cities of India.

In 1990s Delhi ranked 4th among the most polluted cities of the world. But now, air quality of Delhi has significantly improved mainly by switching vehicles from diesel to CNG. (a) Expand CNG (b ) CNG is better than diesel. Comment

In 1990s, Delhi ranked 4^(th) among the most polluted cities of the world. But now air aqulity of Delhi has significantly improved manily by switching vehicles from diesel to CNG. a. Expand CNG. b. CNG is better than diesel .Comment .

With its very large population of vehicular traffic, Delhi is one of the most polluted cities of the world. Which of the following steps were taken by the government to reduce vehicular pollution in Delhi ? (i) Switching over the entire fleet of public transport i.e., buses, autorickshaws, from diesel to CNG (ii) Phasing out of old vehicles (iii) Use of unleaded petrol in vehicles (iv) Use of low sulphur petrol and diesel in vehicles (v) Use of catalytic converters in vehicles (vi) Application of stringent pollution level norms for vehicles such as Euro-II norms, etc.

With its very large population of vehicular traffic, Delhi is one of the most polluted cities of the world. Which of the following steps were taken by the government to reduce vehicular pollution in Delhi ? (i) Switching over the entire fleet of public transport i.e., buses, autorickshaws, from diesel to CNG (ii) Phasing out of old vehicles (iii) Use of unleaded petrol in vehicles (iv) Use of low sulphur petrol and diesel in vehicles (v) Use of catalytic converters in vehicles (vi) Application of stringent pollution level norms for vehicles such as Euro-II norms, etc.

(a) A decade back, the enormous vehicular traffic in Delhi had made Delhi rank 4th among most polluted cities of the world. Two measures taken by the Delhi government brought marked improvement in air quality by 2005. What were these two measures and how did they reduce air pollution? (b) What is the norm set by Euro-II for petrol and diesel vehicles?