Welcome to the Pollution and its Effects MCQs with Answers. In this post, we are sharing Pollution and its Effects Multiple Choice Questions and Answers in Everyday Science section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Pollution and its Effects online MCQs Test.
Which of the following is a major source of air pollution?
a) Volcanic eruptions
b) Drinking water
c) Solar energy
d) Forests
What is the primary cause of water pollution?
a) Industrial waste
b) Wind erosion
c) Organic farming
d) Natural rainfall
Which pollutant is responsible for the depletion of the ozone layer?
a) Carbon dioxide (CO2)
b) Nitrogen oxide (NOx)
c) Sulfur dioxide (SO2)
d) Chlorofluorocarbons (CFCs)
What is the main source of soil pollution?
a) Pesticides and herbicides
b) Underground water sources
c) Soil erosion
d) Natural decomposition of organic matter
Which of the following is a consequence of air pollution?
a) Respiratory diseases
b) Enhanced soil fertility
c) Decreased global temperature
d) Increased biodiversity
What is the primary cause of noise pollution?
a) Construction activities
b) Bird songs
c) Rainfall
d) Quiet environments
Which pollutant is responsible for the formation of acid rain?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Nitrogen dioxide (NO2)
d) Water vapor (H2O)
What is the main source of light pollution?
a) Stars and galaxies
b) Moonlight
c) Streetlights and buildings
d) Natural daylight
Which pollutant is associated with global warming?
a) Ozone (O3)
b) Methane (CH4)
c) Hydrogen (H2)
d) Nitrous oxide (N2O)
What is the primary cause of plastic pollution in oceans?
a) Industrial waste
b) Natural erosion of rocks
c) Volcanic activity
d) Improper disposal of plastic waste
Which pollutant is responsible for the formation of smog?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Sulfur dioxide (SO2)
d) Nitrogen dioxide (NO2)
What is the main source of noise pollution in urban areas?
a) Traffic and transportation
b) Bird chirping
c) Gentle breezes
d) Silent environments
Which pollutant is associated with respiratory problems and lung diseases?
a) Fresh air
b) Carbon monoxide (CO)
c) Oxygen (O2)
d) Hydrogen (H2)
What is the primary cause of thermal pollution in water bodies?
a) Solar energy
b) Underwater volcanoes
c) Cooling systems of power plants
d) Natural evaporation
Which of the following is an effect of soil pollution?
a) Reduced agricultural productivity
b) Increased groundwater quality
c) Enhanced soil fertility
d) Promoted plant growth
What is the primary cause of radioactive pollution?
a) Natural radioactivity
b) Wind erosion
c) Solar radiation
d) Geothermal energy
Which pollutant is responsible for the formation of photochemical smog?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Sulfur dioxide (SO2)
d) Volatile organic compounds (VOCs)
What is the main source of visual pollution?
a) Beautiful landscapes
b) Clear skies
c) Unobstructed views
d) Billboard advertisements and cluttered surroundings
Which pollutant is associated with the destruction of coral reefs?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Nitrogen dioxide (NO2)
d) Carbon dioxide (CO2)
What is the primary cause of indoor air pollution?
a) Outdoor air pollution
b) Natural ventilation
c) Clean indoor environments
d) Household activities and poor ventilation
Which pollutant is responsible for the depletion of fish populations in rivers and lakes?
a) Freshwater flow
b) Nutrient-rich water
c) Toxic chemicals and pollutants
d) Adequate oxygen levels
What is the main source of electromagnetic pollution?
a) Natural electromagnetic fields
b) Earth’s magnetic field
c) Electric power lines and electronic devices
d) Balanced electromagnetic environments
Which pollutant is associated with the thinning of bird eggshells and population decline?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Sulfur dioxide (SO2)
d) DDT (dichlorodiphenyltrichloroethane)
What is the primary cause of marine pollution?
a) Clean and clear water
b) Natural marine ecosystems
c) Discharge of pollutants from ships and industries
d) Absence of marine life
Which of the following is an effect of air pollution on ecosystems?
a) Enhanced biodiversity
b) Improved soil fertility
c) Acidification of water bodies
d) Increased crop yields
What is the primary cause of radioactive pollution in the environment?
a) Solar radiation
b) Geothermal energy
c) Nuclear accidents and waste
d) Natural background radiation
Which pollutant is responsible for the formation of haze and reduced visibility?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Sulfur dioxide (SO2)
d) Particulate matter (PM)
What is the main source of industrial pollution?
a) Natural processes
b) Agricultural activities
c) Industrial processes and emissions
d) Wildlife habitats
Which pollutant is associated with the formation of respiratory disorders and lung cancer?
a) Fresh air
b) Carbon monoxide (CO)
c) Oxygen (O2)
d) Hydrogen (H2)
What is the primary cause of thermal pollution in rivers and lakes?
a) Sunlight
b) Natural evaporation
c) Warming of water by industrial processes
d) Balanced water temperature
Which pollutant is responsible for the formation of ground-level ozone?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Sulfur dioxide (SO2)
d) Nitrogen oxide (NOx)
What is the main source of light pollution in suburban areas?
a) Starlight
b) Moonlight
c) Residential and commercial lighting
d) Natural darkness
Which pollutant is associated with the destruction of ozone in the stratosphere?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Nitrogen dioxide (NO2)
d) Chlorine (Cl)
What is the primary cause of visual pollution in natural landscapes?
a) Clean and unobstructed views
b) Pollution-free environments
c) Littering and improper waste disposal
d) Natural beauty and scenic views
Which of the following is an effect of water pollution on aquatic life?
a) Increased biodiversity
b) Enhanced water clarity
c) Improved reproductive success of fish
d) Harmful algal blooms and fish kills
What is the primary cause of radioactive pollution in food?
a) Natural radioactivity
b) Wind erosion
c) Contamination from nuclear accidents
d) Balanced nutrient content
Which pollutant is responsible for the formation of black carbon and its impact on climate change?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Sulfur dioxide (SO2)
d) Particulate matter (PM)
What is the main source of marine debris and pollution?
a) Natural marine ecosystems
b) Clean and pristine coastlines
c) Improper waste disposal and plastic littering
d) Absence of marine organisms
Which pollutant is associated with the formation of acidification in oceans?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Nitrogen dioxide (NO2)
d) Carbon dioxide (CO2)
What is the primary cause of indoor noise pollution?
a) Natural sounds
b) Soundproof rooms and buildings
c) Quiet environments
d) Household appliances and activities
Which pollutant is responsible for the formation of toxic algal blooms in water bodies?
a) Freshwater flow
b) Nutrient-rich water
c) Oxygen (O2)
d) Adequate sunlight
What is the main source of electromagnetic pollution in residential areas?
a) Natural electromagnetic fields
b) Earth’s magnetic field
c) Household electronic devices and appliances
d) Balanced electromagnetic environments
Which pollutant is associated with the bioaccumulation and biomagnification in the food chain?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Mercury (Hg)
d) Hydrogen (H2)
What is the primary cause of marine noise pollution?
a) Silence in the ocean
b) Natural sounds and communication among marine organisms
c) Underwater drilling and construction activities
d) Balanced underwater acoustics
Which pollutant is associated with the formation of ground-level ozone and respiratory problems?
a) Fresh air
b) Carbon monoxide (CO)
c) Oxygen (O2)
d) Volatile organic compounds (VOCs)
What is the main source of thermal pollution in the atmosphere?
a) Sunlight
b) Natural cooling and warming cycles
c) Heat emission from industrial processes
d) Balanced atmospheric temperatures
Which pollutant is responsible for the formation of smog and respiratory ailments?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Sulfur dioxide (SO2)
d) Particulate matter (PM)
What is the primary cause of visual pollution in urban areas?
a) Beautiful landscapes and well-maintained parks
b) Clean and clear views
c) Cluttered environments and excessive advertisements
d) Unobstructed skylines
Which pollutant is associated with the destruction of coral reefs and marine ecosystems?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Nitrogen dioxide (NO2)
d) Carbon dioxide (CO2)
What is the main source of indoor pollution in homes and buildings?
a) Fresh air and ventilation systems
b) Natural materials and furnishings
c) Clean indoor environments
d) Household pollutants such as cleaning agents and smoke
Which pollutant is responsible for the formation of eutrophication in lakes and rivers?
a) Freshwater flow
b) Nutrient-rich water
c) Oxygen (O2)
d) Adequate sunlight
What is the primary cause of light pollution in natural habitats?
a) Darkness and absence of artificial light
b) Natural illumination from stars and the moon
c) Pristine and unaltered environments
d) Artificial lighting from human activities
Which pollutant is associated with the contamination of food and drinking water?
a) Fresh air
b) Carbon monoxide (CO)
c) Oxygen (O2)
d) Toxic chemicals and pollutants
What is the main source of thermal pollution in coastal areas?
a) Sunlight
b) Natural temperature fluctuations
c) Warming of water by industrial processes
d) Balanced coastal temperatures
Which pollutant is responsible for the formation of urban smog and air quality deterioration?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Sulfur dioxide (SO2)
d) Nitrogen oxides (NOx)
What is the primary cause of marine debris and plastic pollution?
a) Natural marine ecosystems
b) Clean and unspoiled coastlines
c) Improper waste disposal and littering
d) Absence of marine organisms
Which pollutant is associated with the acidification of soil and its impact on plant growth?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Nitrogen dioxide (NO2)
d) Acid rain caused by sulfur dioxide (SO2)
What is the main source of electromagnetic pollution in public places?
a) Natural electromagnetic fields
b) Earth’s magnetic field
c) Public Wi-Fi networks and electronic devices
d) Balanced electromagnetic environments
Which pollutant is associated with the bioaccumulation of heavy metals in aquatic organisms?
a) Oxygen (O2)
b) Carbon monoxide (CO)
c) Mercury (Hg)
d) Hydrogen (H2)
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