Air Pollution and its Control in Automobile MCQs

Question 1

What is the purpose of crank case ventilation?

Accepted Answer

To prevent pressure build up

Answer

To prevent temperature build up

Answer

To increase the blow by gas

Answer

To reduce the combustion leak

Question 2

Where EGR valve connected?

Accepted Answer

Exhaust system and intake system

Answer

Crank case and intake system

Answer

Crank case and exhaust system

Answer

Exhaust system and catalytic converter

Question 3

A . . . . . . . . reduction of cold-start HC has been achieved.

Accepted Answer

35%

Answer

20%

Answer

30%

Answer

40%

Question 4

In a petrol fuel injected engine, the air and fuel are mixed in the

Accepted Answer

Intake ports

Answer

Throttle body

Answer

Intake manifold chamber

Answer

Combustion chambers

Question 5

Reduction of formation of pollutants is achieved by:

Accepted Answer

All of these

Answer

Reducing evaporative emissions

Answer

Re-designing the engine

Answer

Closed crankcase ventilation

Question 6

Pune-based organisation . . . . . . . . conducted a study using a 15% M - 15 methanol blend in vehicles and tested them for 3,000 km to evaluate emissions in real-world conditions as well as to check the performance of the vehicles.

Accepted Answer

Automotive Research Association of India (ARAI)

Answer

Research Association of India (RAI)

Answer

Automotive Organisation (AO)

Answer

Vehicle Organisation of India (VOI)

Question 7

Why are lead compounds added in petrol?

Accepted Answer

Reduce knocking

Answer

Reduce HC emission

Answer

Reduce exhaust temperature

Answer

Increase power output

Question 8

Idling co-emission for all two and three wheeled petrol vehicles should not exceed . . . . . . . . by volume.

Accepted Answer

4.5%

Answer

3.0%

Answer

5.0%

Answer

6.0%

Question 9

More than 90 to 95% of carbon particles originally generated within an engine are thus converted to CO

Accepted Answer

True

Answer

False