Pollution

Which of the following is NOT a primary air pollutant?

• Carbon monoxide (CO)

• Ozone (O₃)

• Sulfur dioxide (SO₂)

• Smoke

Answer explanation

Which type of pollution can be caused by excessive noise from traffic, construction, or loud music?

• Air pollution

• Water pollution

• Soil pollution

• Noise pollution

The introduction of harmful chemicals, such as pesticides or fertilizers, into the soil can lead to:

• Air pollution

• Water pollution

• Light pollution

• Soil pollution

What type of pollution is caused by the discharge of untreated sewage or industrial waste into water bodies?

• Thermal pollution

• Chemical pollution

• Water pollution

• All of the above

Which of the following statements about light pollution is TRUE?

• It only affects humans and doesn't harm wildlife

• It has no significant environmental impact

• It disrupts natural light cycles and can harm ecosystems

• It is a concern only in major cities

1. Precipitation involves adding chemicals to water to convert dissolved pollutants into

• Gases

• Insoluble compounds

• Finer particles

• Biodegradable materials

1. The process of using microorganisms to break down pollutants is called

• Adsorption

• Neutralization

• Bioremediation

• Thermal treatment

1. Membrane filtration uses specialized membranes to selectively allow

• Water or air to pass through

• Pollutants to pass through

• All substances to pass through

• Only large molecules to pass through

9. Air pollution, particularly fine particulate matter, is linked to various respiratory problems like

• High blood pressure

• Asthma

• Kidney failure

• Skin irritation

Which of the following is NOT a negative consequence of pollution on human health?

• Respiratory problems

• Cardiovascular diseases

• Developmental problems

• 9. Improved immunity