Quiz on Pollution

What is the definition of pollution?

• Natural process of recycling waste

• Any harmful change in the environment caused by human activity

• Use of renewable resources

• Reduction of energy use

Which of the following is NOT a type of pollution?

• Air pollution

• Noise pollution

• Soil pollution

• Thermal expansion

What is the major cause of air pollution?

• Decomposing plants

• Volcanic eruptions

• Vehicle emissions and industrial activities

• Tidal waves

Which of the following gases is a greenhouse gas?

• Oxygen

• Nitrogen

• Carbon dioxide

• Helium

Water pollution is mainly caused by:

• Cloud formation

• Industrial waste and sewage discharge

• Sound vibrations

• Natural rain

Which of these is a primary cause of soil pollution?

• Acid rain

• Wind erosion

• Disposal of plastic and chemicals

• Composting

What is a biodegradable pollutant?

• Pollutant that remains unchanged for centuries

• Pollutant that is radioactive

• Pollutant broken down by microorganisms

• Pollutant released by nuclear plants

What is the role of the ozone layer?

• To trap heat for the Earth

• To reflect radio waves

• To absorb harmful UV rays

• To cool the atmosphere

Which one of the following is a preventive measure against air pollution?

• Using diesel vehicles

• Burning waste in open air

• Using renewable energy sources

• Increasing fossil fuel use

How does deforestation contribute to pollution?

• It increases oxygen production

• It improves biodiversity

• It reduces the number of trees that absorb CO₂

• It cleans the atmosphere