Pollution MCQs Questions and Answers

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Pollution refers to the introduction of harmful substances or contaminants into the environment, causing adverse effects on ecosystems, human health, and the balance of nature. It can manifest in various forms, including air pollution, water pollution, soil contamination, and noise pollution.

Pollution MCQs Questions and Answers

Air pollution primarily stems from industrial emissions, vehicle exhaust, and burning fossil fuels, leading to respiratory diseases, global warming, and acid rain. Water pollution results from the discharge of untreated sewage, industrial waste, and agricultural runoff, contaminating water bodies and endangering aquatic life as well as human health.

Soil contamination occurs when hazardous chemicals, such as pesticides and heavy metals, infiltrate the soil, impairing fertility and posing risks to plant growth and food safety. Noise pollution, caused by urbanization, transportation, and industrial activities, can contribute to stress, hearing loss, and disruptions in wildlife behavior.

Pollution control measures involve regulatory policies, technological advancements, and public awareness campaigns aimed at minimizing emissions, promoting sustainable practices, and preserving environmental quality for present and future generations. Addressing pollution requires collective efforts at local, national, and global levels to mitigate its detrimental impacts and safeguard the health of ecosystems and communities worldwide.

Pollution MCQs Questions and Answers

Q1. Human-made pollutants are called 

(a) Xenobiotics 

(b) Antibiotics

(c) Humalins 

(d) Anthropogenic

(d) Anthropogenic

Q2. The environment modified by human activities is called

(a) natural environment

(b) Anthropogenic environment

(c) Urban environment

(d) Modern environment

(b) Anthropogenic environment

Q3. Bio-degradable pollutant is

(a) Mercury

(b) Sewage

(c) Plastic

(d) Asbestos

(b) Sewage

Q4. The combustion of coal, petrol and diesel etc. is the  basic source of

(a) Water pollution 

(b) Land pollution

(c) Air pollution 

(d) Noise pollution

(c) Air pollution

Q5. Which of the following energy sources produces NO  atmospheric pollution?

(a) Nuclear energy

(b) Solar energy

(c) Petroleum energy 

(d) Coal energy

(b) Solar energy

Q6. Smog is essentially caused by the atmospheric presence  of 

(a) Oxygen and ozone

(b) Ozone and nitrogen

(c) Oxygen and nitrogen

(d) Oxide of nitrogen and sulphur

(d) Oxide of nitrogen and sulphur

Q7. During normal conditions, the gas which pollutes the  atmosphere is

(a) Carbon Monoxide (CO)

(b) Carbon dioxide (CO2)  

(c) Nitrogen (N2)

(d) Oxygen (O2)

(a) Carbon Monoxide (CO)

Q8. Which one of the following is not a secondary  pollutant?

(a) PAN

(b) Smog

(c) Sulphur dioxide

(d) Ozone

(c) Sulphur dioxide

Q9. Which among the following is the secondary pollutant?

(a) Smog 

(b) Carbon dioxide

(c) Carbon mono-oxide

(d) Fly ash

(a) Smog

Q10. Combustion of petrol in automobiles pollutes the air  by producing the following metal.

(a) Mercury

(b) Cadmium

(c) Lead 

(d) Carbon Dioxide

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(c) Lead

Q11.Which of the following air pollutants is most  dangerous?

(a) Ozone 

(b) Hydrogen sulphide

(c) Carbon dioxide 

(d) Carbon monoxide

(d) Carbon monoxide

Q12. The non-biotic pollutant in underground water is 

(a) Bacteria 

(b) Algae

(c) Arsenic 

(d) Viruses

(c) Arsenic

Q13. Where is the wild ass sanctuary?

(a) U.P 

(b) Assam  

(c) Gujarat

(d) Rajasthan

(c) Gujarat

Q14. Water pollution of river is measured by 

(a) Amount of Chlorine dissolved in water

(b) Amount of Ozone dissolved in water

(c) Amount of Nitrogen dissolved in water

(d) Amount of Oxygen dissolve in water

(d) Amount of Oxygen dissolve in water

Q15. The highest chemical pollution is caused by the  industrial effl  uents of :

(a) Leather industry

(b) Paper industry  

(c) Rayon industry  

(d) Textile industry

(a) Leather industry

Q16. Acid rain is due to air pollution by–   

(a) Carbon dioxide

(b) Carbon monoxide

(c) Methane

(d) Nitrous oxide and Sulphur dioxide

(d) Nitrous oxide and Sulphur dioxide

Q17. Which one of the following is not related to air  pollution?

(a) Smog 

(b) Acid Rain 

(c) Eutrophication

(d) Asbestosis

(c) Eutrophication

Q18.The gas which leaked from Union Carbide Factory,  Bhopal was

(a) Carbon monoxide 

(b) Methane

(c) Methyl isocyanate 

(d) Sulphur dioxide

(c) Methyl isocyanate

Q19. Polythene bags cannot be destroyed because they are  made of 

(a) Unbreakable molecules  

(b) Inorganic compounds 

(c) Polymers  

(d) Proteins

(c) Polymers

Q20. Which one of the following is biodegradable?

(a) Plastic 

(b) Polythene  

(c) Mercury 

(d) Rubber

(d) Rubber

Q21. Which one of the following is a bioindicator of air  pollution?

(a) Lichen 

(b) Fern  

(c) Money plant  

(d) Dodder

(a) Lichen

Q22. Which of the following is not a water pollutant?

 (a) Zinc (b) Copper  (c) Nickel (d) Sulphur Dioxide. 

(d) Kangaroo rat

Q23. Which one of the following is known for cleaning a  polluted environment?

 (a) Oxygen

(b) Rain

(c) Nitrogen

(d) Air 

(d) The U.S.A

Q24. The most important indoor air pollutant is 

(a) Sulphur Dioxide 

(b) Carbon Dioxide

(c) Nitrogen Dioxide 

(d) Radon gas

(d) Radon gas

Q25. The headquarter of International Maritime Organization  is located in

(a) London

(b) Geneva 

(c) Paris 

(d) Rome

(a) London

Q26. “Knock-Knee Syndrome” is caused by the pollution of

(a) Mercury 

(b)  Lead  

(c) Arsenic 

(d)  Fluoride

(d)  Fluoride

What are the main causes of air pollution?

Air pollution is primarily caused by vehicle emissions, industrial activities, burning fossil fuels for energy production, agricultural practices, and the release of pollutants from construction sites.

How does pollution affect human health?

Pollution can lead to respiratory problems like asthma and bronchitis, cardiovascular diseases, neurological disorders, and even cancer. It also weakens the immune system and contributes to premature mortality, particularly in vulnerable populations such as children, the elderly, and those with pre-existing health conditions.

What are the sources of water pollution?

Water pollution arises from various sources including industrial discharge, agricultural runoff containing pesticides and fertilizers, untreated sewage and wastewater, oil spills, and improper disposal of chemicals and plastics.

How does pollution impact the environment?

Pollution can disrupt ecosystems, harm wildlife, and degrade habitats. It leads to biodiversity loss, soil erosion, acidification of water bodies, and eutrophication, which results in the depletion of oxygen levels in aquatic environments, suffocating marine life.

What measures can individuals take to reduce pollution?

Individuals can reduce pollution by adopting environmentally friendly practices such as conserving energy, using public transportation or carpooling, recycling and proper waste disposal, conserving water, using eco-friendly products, and supporting policies that promote sustainable development and pollution control.

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