Pollution Sources | MCQs

Explanation

sewage and garbage = 80% of the total pollution (in the world)

Source: United Nation Environment Programme

Explanation

Land pollution is caused by:

• Plastic bags, bottles, glass bottles, tin cans
• Vegetables and fruit cutting
• Animal wastes

Explanation

Gases from household materials are not a direct cause of water pollution.

Water pollution is typically caused by the release of harmful substances into water bodies, such as:

• Sewage water from homes (containing human waste, chemicals, and other pollutants)
• Untreated water from industries (containing industrial chemicals, heavy metals, and other pollutants)
• Water runoff from agriculture (containing pesticides, fertilizers, and other pollutants)

Explanation

• Fuel is the major source of release of direct pollutants in air pollution.
• Primarily due to the combustion of fossil fuels, which releases harmful pollutants into the atmosphere.

Fuel combustion releases pollutants such as:

• Particulate matter (PM)
• Carbon monoxide (CO)
• Nitrogen oxides (NOx)
• Sulfur dioxide (SO2)Volatile 
• organic compounds (VOCs)

These pollutants can come from various sources, including:

• Transportation (vehicles, airplanes)
• Industrial processes (power plants, refineries)
• Residential and commercial heating and cooking

Explanation

Water from domestic use is not a typical cause of air pollution.

Air pollution is typically caused by the release of harmful substances into the atmosphere, such as:

• Burning of fuel (transportation, industrial processes)
• Burning of solid waste (incineration, landfills)
• Coal (mining, combustion)

Explanation

Air pollution is caused by the release of harmful substances into the atmosphere, which can come in the form of:

• Solids (particulate matter, such as dust, soot, and smoke)
• Liquids (aerosols, such as mist and fog)
• Gases (carbon monoxide, nitrogen oxides, sulfur dioxide, and volatile organic compounds)