Air Pollution And Its Control In Automobile - Study Mode

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[#81] A catalytic converter has to be at least how hot before it starts working?

(A) 500°F (260°C)

(B) 1000°F (540°C)

(C) 1500°F (815°C)

(D) 2000°F (1100°C)

Correct Answer

(A) 500°F (260°C)

[#82] What does the evaporation emission control eliminate?

(A) CO

(B) CO 2

(C) HC

(D) NO x

Correct Answer

(C) HC

[#83] Engine emits white smoke due to

(A) Excessive lean mixture

(B) Excessive rich mixture

(C) Excessive oil with fuel

(D) Worn out piston rings

Correct Answer

(C) Excessive oil with fuel

[#84] Which of the following cannot be reduced by thermal converters?

(A) CO

(B) HC

(C) Soot

(D) NO x

Correct Answer

(D) NO x

[#85] Ozone is harmful to plants and trees and causes very heavy crop losses each year.

(A) True

(B) False

Correct Answer

(A) True