JAMB and WAEC Chemistry questions: Environmental pollution

32 questions with answers and explanations. Tap an option to check yourself.

1. Question 21· Environmental pollution· JAMB

   Biodegradable waste is waste that

   • Acan be broken down by microorganisms
   • Bis made of plastic
   • Cis made of glass
   • Dis a metal can

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   Explanation and discussion

2. Question 22· Environmental pollution· WAEC

   Chlorofluorocarbons (CFCs) damage the environment by

   • Acausing hard water
   • Bdepleting the ozone layer
   • Cforming rust
   • Dfertilising soil

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   Explanation and discussion

3. Question 23· Environmental pollution· JAMB

   Acid rain damages buildings made of

   • Aplastic
   • Bglass
   • Climestone and marble
   • Dgold

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   Explanation and discussion

4. Question 24· Environmental pollution· JAMB

   A common source of lead pollution is

   • Atable salt
   • Bleaded petrol and old batteries
   • Ccotton fabric
   • Drainwater

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   Explanation and discussion

5. Question 25· Environmental pollution· JAMB

   The greenhouse effect is mainly caused by an increase in atmospheric

   • Aoxygen
   • Bcarbon(IV) oxide
   • Cnitrogen
   • Dargon

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   Explanation and discussion

6. Question 26· Environmental pollution· JAMB

   Oil spillage in rivers kills fish mainly because the oil

   • Aprevents oxygen from dissolving in the water
   • Bmakes the water too warm
   • Cadds nutrients
   • Dincreases light

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   Explanation and discussion

7. Question 27· Environmental pollution· WAEC

   Noise pollution can best be reduced by

   • Ausing silencers on generators and vehicles
   • Bburning refuse
   • Cplanting crops near roads
   • Dusing more loudspeakers

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   Explanation and discussion

8. Question 28· Environmental pollution· JAMB

   The loudness of noise pollution is measured in

   • Anewtons
   • Bhertz
   • Cdecibels
   • Djoules

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   Explanation and discussion

9. Question 29· Environmental pollution· JAMB

   Eutrophication of rivers and lakes is mainly caused by

   • Aheavy rainfall
   • Bcarbon(IV) oxide in the air
   • Crun-off of fertilisers containing nitrates and phosphates
   • Dsunlight

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   Explanation and discussion

10. Question 30· Environmental pollution· WAEC

    Non-biodegradable wastes such as plastics are best managed by

    • Aburning in the open
    • Brecycling
    • Cdumping in rivers
    • Dburying in farmland

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    Explanation and discussion

11. Question 31· Environmental pollution· JAMB

    Lead compounds were formerly added to petrol to

    • Aprevent knocking in engines
    • Bcolour the petrol
    • Creduce smoke
    • Dmake it cheaper

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    Explanation and discussion

12. Question 32· Environmental pollution· WAEC

    Acid rain is mainly caused by

    • Alead compounds
    • Bcarbon(II) oxide only
    • Coxides of sulphur and nitrogen
    • Dhydrogen gas

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    Explanation and discussion