Catalytic removal

Question 1

To reduce the amount of pollutants released in car exhaust fumes, many cars are now fitted with……..

Answer 1

catalytic convertors

Question 2

Precious metals (such as platinum) are coated on a honeycomb to provide a ……….

Answer 2

large surface area

which oxidises CO

Question 3

How to carbon particulates form

Answer 3

small particles of unburnt hydrocarbon can cause respiratory problems

Question 4

What can sulphur impurities lead to

Answer 4

Lead to the acidification of water in which they react to make H2SO4

Question 5

How can sulphur impurities be converted

Answer 5

via flue gas desulphurisation calcium oxide and gypsum are used