Correct option is C
The correct answer is (c).
Introduction
- The Bharat Stage (BS) emission standards are instituted by the Government of India to regulate the output of air pollutants from internal combustion engines.
- As environmental concerns over air quality intensified, the country made a significant leap to adopt stringent regulations.
- As of 2023, BS-VI standards are fully active and mandated across the nation for all new vehicle sales and registrations.
Information Booster
- Bharat Stage emission standards are based on European regulations (Euro norms) and are governed by the Central Pollution Control Board (CPCB).
- India completely bypassed the BS-V norms, jumping directly from BS-IV to BS-VI to aggressively combat air pollution.
- The BS-VI norms were officially implemented across the country starting from April 1, 2020.
- A major difference in BS-VI is the strict limitation on sulfur content in fuel, which was reduced from 50 ppm in BS-IV to just 10 ppm.
- BS-VI mandates the use of advanced exhaust treatment technologies like Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) in diesel vehicles.
- Onboard Diagnostics (OBD) systems became mandatory under BS-VI for real-time emission monitoring.
- Phase II of the BS-VI emission norms, involving Real Driving Emissions (RDE), kicked in from April 2023.
- Option A (BS-IV): These norms were implemented nationwide in 2017 but were phased out and legally completely replaced by BS-VI by April 2020.
- Option B (BS-V): India entirely skipped the implementation of BS-V to fast-track its emission goals and align directly with global Euro 6 standards.
- Option D (BS-VII): As of 2023, BS-VII has not been introduced or implemented in India; the current operational limit remains strictly BS-VI.
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