Test Your Knowledge on Vehicular Emissions and Air Pollution

kanwar September 24, 20241

Take our engaging quiz to discover how much you know about the link between vehicular emissions and air pollution. Learn about the impact of various pollutants, the health risks involved, and the steps we can take to mitigate this growing problem. Challenge yourself and become a part of the solution!

Quiz: Vehicular Emission and Air Pollution

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1. What would happen if you mistakenly filled a gasoline engine car with high-cetane diesel fuel?

The car would run more efficiently due to the higher energy content of diesel.

The fuel would burn cleaner with lower emissions.

The engine would experience knock due to premature ignition.

The engine would produce excessive smoke and could be severely damaged.

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2. Which of the following would be a typical cetane number for high-quality diesel fuel?

100

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3. If a vehicle fails an emissions test due to high levels of hydrocarbons (HC) and carbon monoxide (CO), but the NOx levels are within limits, which component might be malfunctioning?

Diesel Oxidation Catalyst (DOC)

Diesel Particulate Filter (DPF)

Three-way Catalytic Converter (for gasoline engines)

Selective Catalytic Reduction (SCR)

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4. What does the octane number of gasoline primarily measure?

The fuel's ability to resist engine knock in spark-ignition engines.

The fuel's purity.

The energy content of the fuel.

The fuel's combustion speed.

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5. Why might a diesel engine run poorly with a low cetane number fuel?

It leads to incomplete combustion and longer ignition delay.

It reduces the amount of NOx emissions

It increases the engine's power output.

It allows for better fuel economy due to slower burn rates.

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6. What technology is primarily used in diesel engines to reduce NOx emissions?

Selective Catalytic Reduction (SCR)

Lean NOx Trap (LNT)

Exhaust Gas Recirculation (EGR)

Diesel Particulate Filter (DPF)

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7. Which of the following best describes why electric vehicles (EVs) are considered to have lower “tailpipe” emissions?

They use cleaner fuel sources.

They can be charged at home reducing fuel transport emissions.

They have regenerative braking systems

They produce no exhaust from an internal combustion engine.

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8. Which of the following pollutants from vehicle exhaust is not directly reduced by a catalytic converter?

Carbon monoxide (CO)

Particulate Matter (PM)

Nitrogen oxides (NOx)

Hydrocarbons (HC)

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9. Which of the following best describes the primary function of a Diesel Particulate Filter (DPF)?

To increase the oxygen content for better combustion.

To trap and remove particulate matter from the exhaust.

To reduce the amount of carbon monoxide in the exhaust.

To convert NOx into nitrogen and water.

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10. In the context of vehicle emissions, what does the term “EVAP” refer to?

Exhaust Volume Air Pressure

Electric Vehicle Acceleration Performance

Evaporative Emissions Control

Emission Velocity Adjustment Procedure

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11. Why might a vehicle equipped with a modern emission control system experience decreased fuel efficiency when the DPF is clogged?

The engine has to work harder due to increased backpressure in the exhaust system.

The catalytic converter stops functioning when the DPF is clogged.

The ECU reduces engine power to protect the DPF.

The vehicle automatically injects more fuel to cool down the engine.

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12. Which pollutant, primarily from vehicle emissions, can lead to the formation of ground-level ozone?

Carbon dioxide (CO2)

Lead (Pb)

Sulfur dioxide (SO2)

Volatile Organic Compounds (VOCs)

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13. Which statement about Selective Catalytic Reduction (SCR) is false?

SCR converts NOx into nitrogen, water, and sometimes CO2.

The SCR system can operate effectively at lower exhaust temperatures than a DPF regeneration cycle

SCR can function independently of the diesel particulate filter

SCR uses diesel exhaust fluid (DEF) to reduce NOx emissions.

Your score is

The average score is 51%

Author

kanwar

Kanwar Bhan Godara UGC NET JRF Environmental Science
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Quiz Environmental Science UGC NET Environmental Science

Last updated on September 24, 2024

kanwar

Kanwar Bhan Godara UGC NET JRF Environmental Science

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