Question

Which of the following is the way to control vehicular air-pollution in Indian cities ?

• A. Use of CNG as fuel
• B. Use of unleaded petrol in the vehicles
• C. Use of catalytic converter in the vehicles
• D. All of these

Answer 1

The correct option is D All of these

1. CNG produces 45% fewer hydrocarbons than gasoline.
   
2. Unleaded petrol doesn't produce lead in the atmosphere.
   
3. Catalytic converter reduces emissions of three harmful compounds found in car exhaust which are
   

• Carbon monoxide (a poisonous gas)
• Nitrogen oxides (a cause of smog and acid rain)
• Hydrocarbons (a cause of smog)
• So, the correct option is 'All of these'.