Air Pollution: Causes, Effects and Control · NCERT Biology

The Euro III norms, which were aimed to control vehicular pollution, specified that sulfur be controlled at ________ in diesel and ________ in petrol.

  1. 350 ppm; 150 ppm
  2. 50 ppm; 50 ppm
  3. 100 ppm; 100 ppm
  4. 500 ppm; 250 ppm
Show answer and explanation

Correct answer: 350 ppm; 150 ppm

According to Euro III norms, sulfur content was to be restricted to 350 ppm in diesel and 150 ppm in petrol. The ultimate goal of subsequent norms was to reduce sulfur levels even further to 50 ppm in both fuels.

Difficulty: Medium Question 12 of 20

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