Improving Air Quality

Question 1

Suggest 4 ways to reduce electricity

Answer 1

[1] Turning heating down at home
[2] Turning off lights when necessary
[3] Not leaving the TV on standby
[4] Using a microwave instead of electric oven

Question 2

How is the amount of sulfur dioxide given off by a power station reduced? [2]

Answer 2

[1] Removing sulfur from natural gas/fuel oil

[2] Removing sulfur dioxide from the flue gases emitted by coal-burning power stations

Question 3

How can atmospheric pollution caused by exhaust gases in motor vehicles be reduced? [3]

Answer 3

[1] Using low sulfur fuels
[2] Burning less fuel and having more efficient engines?
[3] Using public transport

Question 4

What do catalytic converters do?

Answer 4

Convert nitrogen monoxide to nitrogen and oxygen, and convert carbon monoxide to carbon dioxide