Question

Assertion: The Bharat Stage Emission Standards (BSES) are emission norms instituted by the Indian Government to regulate the emission of air pollutants from motor vehicles.

Reason: According to the BS IV norms, 350 parts per million sulphur content is permitted compared to the only 50 parts per million under BS III norms.

• A. Both assertion and reason are true and reason is the correct explanation of assertion
• B. Both assertion and reason are true but reason is not the correct explanation of assertion
• C. Assertion is true but the reason is false
• D. Both assertion and reason are false

Answer 1

The correct option is C Assertion is true but the reason is false

The Bharat Stage Emission Standards (BSES) are emission norms instituted by the Indian Government to regulate the emission of air pollutants from motor vehicles. The emission standards under BSES are established by the CPCB (Central Pollution Control Board) under the Ministry of Environment & Forests and climate change. According to the BS IV norms, only 50 parts per million sulphur content is permitted compared to the 350 parts per million under BS III norms. The volume of nitrogen oxide, hydrocarbon, as well as emission of particulate matter has been significantly lowered under the BS IV standards.

The BSES norms were first introduced in 2000. The Bharat Stage IV norms were enforced in the entire country in April 2017. That means that all vehicles manufactured and sold after April 2017 must be compliant with the BS IV standards.