Session 2: Auto Emissions and EU/BS Standards
Unit 5: Automobile and Environment
Textual Question-Answers
Check Your Progress
A. Fill in the blanks
1. Burning of fuel takes place in the …………………. of automobile togive power to the vehicle.
Ans: Burning of fuel takes place in the engine of automobile to give powerto the vehicle.
2. Smoke is the by-product of the ………………… process.
Ans: Smoke is the by-product of the combustion process.
3. First stage emission norms came into force for petrol vehicles inthe year …………………….
Ans: First stage emission norms came into force for petrol vehicles in theyear 1991.
4. Emission reduction achieved from pre-89 levels is …………………. for petrol driven and ……………… for diesel vehicles from 1991 levels.
Ans: Emission reduction achieved from pre-89 levels is 50 percent forpetrol driven and 40 percent for diesel vehicles from 1991 levels.
5. Euro II equivalent Bharat Stage II norms are in force from 2001in the four metros of …………………..and…………………
Ans: Euro II equivalent Bharat Stage II norms are in force from 2001 inthe four metros of Delhi and Mumbai.
B. Multiple choice questions
1. Petrol and diesel fuels are mixtures of ………………..
(a) hydrocarbons
(b) carbons
(c) nitrogen
(d) carbon monoxide
Ans: (a) hydrocarbons
2. Government standards generally regulate the emissions of…………………. (a) nitrogen oxides (NO‚ )
(b) sulphur oxides (SO‚ )
(c) particulate matter (PM) or soot
(d) All of the above
Ans: (d) All of the above
3. In a ‘perfect’ engine, oxygen in the air would convert all thehydrogen in the fuel to ……………………
(a) water
(b) gases
(c) smoke
(d) pollution
Ans: (a) water
C. Short answer questions
1. Why is emission control important?
Ans: Emission control is important to reduce air pollution, protect humanhealth, prevent environmental damage, and comply with government regulations.
2. What is Bharat Standard or Euro Standard?
Ans: Bharat Standard or Euro Standard refers to emission norms set bythe government to regulate and limit the amount of pollutants released frommotor vehicles into the environment.
