Which of the following correctly describes Bharat Stage VI (BS-VI) emission norms?
(a) BS-VI norms introduced Real Driving Emissions (RDE) testing to measure pollutants under actual road conditions.
(b) Unlike BS-IV, BS-VI norms do not impose any limits on particulate matter (PM) emissions from diesel vehicles.
(c) The sulfur content in BS-VI-compliant fuel is higher than that in BS-IV fuel to improve engine performance.
(d) India transitioned to BS-VI norms in 2022 after implementing BS-V in 2020.

Question

Which of the following correctly describes Bharat Stage VI (BS-VI) emission norms?
(a) BS-VI norms introduced Real Driving Emissions (RDE) testing to measure pollutants under actual road conditions.
(b) Unlike BS-IV, BS-VI norms do not impose any limits on particulate matter (PM) emissions from diesel vehicles.
(c) The sulfur content in BS-VI-compliant fuel is higher than that in BS-IV fuel to improve engine performance.
(d) India transitioned to BS-VI norms in 2022 after implementing BS-V in 2020.

ONLiNE UPSC · Accepted Answer

Option (a) is correct: BS-VI introduced Real Driving Emissions (RDE) testing to measure pollutants under real-world conditions, ensuring compliance beyond lab tests.

Option (b) is not correct: BS-VI significantly reduced particulate matter (PM) limits for diesel engines through advanced emission control technologies.

Option (c) is not correct: BS-VI fuel contains only 10 ppm sulfur, much lower than the 50 ppm in BS-IV, reducing harmful emissions.

Option (d) is not correct: India skipped BS-V norms entirely and directly moved from BS-IV to BS-VI in April 2020 to expedite pollution control measures.
Hence, option (a) is correct.

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M Question 1	⏱ 0
Which of the following correctly describes Bharat Stage VI (BS-VI) emission norms? (a) BS-VI norms introduced Real Driving Emissions (RDE) testing to measure pollutants under actual road conditions. (b) Unlike BS-IV, BS-VI norms do not impose any limits on particulate matter (PM) emissions from diesel vehicles. (c) The sulfur content in BS-VI-compliant fuel is higher than that in BS-IV fuel to improve engine performance. (d) India transitioned to BS-VI norms in 2022 after implementing BS-V in 2020.