Automotive Pollution and Control MCQs
Practice free Automotive Pollution and Control multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 30 questions — no login required.
Question 1easy
During which condition of the vehicle does NOx emission in SI engine will be lowest?
Question 2easy
Which of the following is one of the major exhaust emissions from CI engines compared to SI engines?
Question 3easy
Oxides of nitrogen in the engines exhaust can be reduced by the following methods:
1. Decrease in compression ratio
2. Exhaust gas recirculation
3. Use of 5% lean mixture
4. Use of oxidation catalysts in exhaust manifold.
The correct methods are
1. Decrease in compression ratio
2. Exhaust gas recirculation
3. Use of 5% lean mixture
4. Use of oxidation catalysts in exhaust manifold.
The correct methods are
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Question 4easy
In Diesel engines, the control of black smoke in the exhaust can be achieved by:
1. Running the engine at lower load.
2. Maintaining the injection system perfect.
3. Using Diesel fuel of higher Cetane number.
Which of the above statements are correct?
1. Running the engine at lower load.
2. Maintaining the injection system perfect.
3. Using Diesel fuel of higher Cetane number.
Which of the above statements are correct?
Question 5easy
. . . . . . . . is collected during engine startup time when the catalytic converter is cold, and then later released back into the exhaust flow when the converter is hot.
Question 6easy
Which is less harmful emission element after convert by catalytic converter?
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Question 7easy
Which is harmful emission element produced by an internal combustion engine?