GNS 311 PAST QUESTION (5)

1.             What is source of chlorofluorocarbons?

a.    Aerosol sprays foams

b.    Exhaust fumes of motor vehicles

c.    Incomplete burning of wood

d.   Both A and B

2.             What is source of chlorofluorocarbons?

a.    Aerosol sprays foams

b.    Exhaust fumes of motor vehicles

c.    Incomplete burning of wood

d.   Both A and B

3.             What is source of carbon monoxide?

a.    Incomplete burning of wood

b.    Fuels

c.    Exhaust fumes of motor vehicles

d.   All of these

4.             What is source of sulphur dioxide?

a.    Powerstations and industries using fossil fuels

b.    Exhaust fumes of motor vehicles

c.    Incomplete burning of wood

None of these