Question

According to Euro III norms, aromatic hydrocarbons are to be contained at ______ of the concerned fuel.

• A. 45%
• B. 25%
• C. 52%
• D. 42%

Answer 1

The correct option is D 42%

The permissible emission levels for petrol and diesel vehicles which have been implemented in Europe are referred to as Euro norms. However, the government in India has adopted and used the Euro norms as reference for fuel quality and the method of testing. In India it is called Mass Emission Standards or Bharat Stage Emission standards.

Aromatic hydrocarbons (examples include naphthalene, anthracene etc.) are air pollutants that are generated primarily due to incomplete combustion of fuel like petrol, diesel etc. They are aromatic organic compounds containing solely carbon and hydrogen atoms. Some aromatic hydrocarbons are extremely toxic and are known to have mutagenic or carcinogenic properties.

According to Euro III norms, aromatic hydrocarbons are to be contained at 42 per cent of the concerned fuel (petrol or diesel). Hence option d is correct.