C1.3

Question 1

How can atmospheric pollution from power stations be reduced?

Answer 1

Using less electricity
Removing sulfur from natural gas and fuel oil
Removing sulfur dioxide and particulates from the flue gassed emitted by power stations

Question 2

How is SO2 removed from flue gases by wet scrubbing?

Answer 2

Using an alkaline slurry: a spray of calcium oxide
Or
Using sea water

Question 3

What is the only way of producing less CO2

Answer 3

Burning less fossil fuels

Question 4

How can atmospheric pollution from exhaust emissions be reduced?

Answer 4

Burning less fuel- more efficient engines

Using low sulfur fuels

Using catalytic converters ( in which nitrogen monoxide is reduced to nitrogen by loss of oxygen& CO is oxidised to CO2

Adjusting balance between public and private transport

Having legal limits to exhaust emissions

Question 5

What are the benefits and problems of using alternatives to fossil fuels for motor vehicles, limited to biofuels and electricity

Answer 5

Biofuels can be used but they use up valuable farmland