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Environmental Applications
Test Description: The objective of this game is to identify some environmental applications of separation techniques.
Instructions: Answer all questions to get your test result.
1) Natural water is often polluted. It is advised to equip drinking water tap with ............. in order to treat water coming into house.
A
Water Filter
B
Air Filter
C
Oil Filter
D
Fuel Filter
2) The role of water filters is to:
A
remove salts.
B
remove suspended particles.
C
remove dissolved substances.
D
remove microbes and bacteria.
3) How do filters work? Filters have pores where
A
larger particles pass through these pores.
B
smaller particles pass through these pores.
C
the larger dimension of pore, the more efficient is the filter.
D
all particles pass through these pores.
4) Dust and solid particles are very hamful to car engines. Air filters
A
retain solid particles from water coming into car engine.
B
retain dust from the air coming into car engine.
C
retain solid particles from oil coming into car engine.
D
retain solid particles from fuel coming into car engine.
5) In order to protect car engines from solid pollutants coming in with fuel, cars are equiped with:
A
Water Filter
B
Oil Filter
C
Fuel Filter
D
Air Filter
6) Pollution occurs when harmful materials are released into environment. Air pollution occurs
A
when harmful gases are released into air.
B
when harmful materials are released into soil.
C
when harmful materials are released into water.
D
when harmful gases are released into water.
7) Indicate which of the following is not a source of air pollution.
A
Smoke and harmful gases released from factories.
B
Burning garbage.
C
Walking and Cycling.
D
Gases released from exhaust pipes of vehicles.
8) Water pollution can be reduced by:
A
Equip smokestack of factories with filters.
B
Walking and Cycling.
C
Sewage water treatment.
D
Use public transportation means.
9) Vehicles are major sources of air pollution. Suggest way to reduce air pollution caused by vehicles.
A
Use fuels that have high sulfur content.
B
Use pupblic transportation means like buses.
C
Use natural fertilizers.
D
Equip factories with scrubbers.
10) Indicate which of the following is not an effect of water pollution.
A
Harm fish and other organisms that live in water.
B
Breathing problems.
C
Make the water unsafe for drinking and for domestic use.
D
Spread many diseases.
*select an answer for all questions
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