Emission Control System Multiple Choice Questions Practice - Set 02 - ObjectiveBooks

Emission Control System Multiple Choice Questions Practice - Set 02

Practice Test: Question Set - 02


1. What is the purpose of selective catalytic reduction (SCR)?
    (A) Reduce CO2
    (B) Reduce PM
    (C) Reduce NOX
    (D) Reduce HC

2. Which is a green house effect gas?
    (A) O2
    (B) CO
    (C) CO2
    (D) N2

3. What does the evaporation emission control eliminate?
    (A) CO
    (B) CO2
    (C) HC
    (D) NOX

4. Which is the source of pollutant gases with hydro carbon?
    (A) From fuel tank evaporation
    (B) From carburetor evaporation
    (C) From crank case blow by
    (D) From exhaust system

5. How do we achieve near zero emission diesel engines?
    (A) Combo of PCV and EGR
    (B) Combo of EGR and SCR
    (C) Combo of PCV and 3 way catalytic connection
    (D) Combo of DPF and EGR

6. What is the use of catalytic converters?
    (A) Control the noise
    (B) Control the emission
    (C) Control the temperature
    (D) Control the fuel consumption

7. What is the purpose of EGR (Exhaust gas recirculation) valve?
    (A) Reduce NOX
    (B) Reduce CO
    (C) Reduce CO2
    (D) Reduce SO2

8. Which of the hydro carbon emission released after the combustion of the engine?
    (A) From fuel tank
    (B) From carburetor
    (C) From crank case blow by
    (D) From exhaust system

9. Which is less harmful emission element after convert by catalytic converter?
    (A) CO2 + HC + H2O
    (B) NOX + CO2 + Pm
    (C) H2O + CO2 + Nitrogen
    (D) Pb + CO2 + NOX

10. Which is used to absorb fuel vapor in the EVAP canister?
    (A) Banian cloth
    (B) Cotton roll
    (C) Paper filter
    (D) Activated charcoal

11. Where the positive crank case ventilation fitted?
    (A) Muffler and air cleaner
    (B) Controller and air cleaner
    (C) Feed pump and air cleaner
    (D) Engine breather and air cleaner

12. What is positive crank case ventilation?
    (A) Use of back pressure to increase efficiency
    (B) HC present in blow by drawn out
    (C) HC present in the blow by reused
    (D) Increase the crank case dilution

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