Air Pollution and Its Effects MCQS

1. What is the major cause of air pollution in urban areas of Pakistan?
(A) Industrial activities
(B) Overgrazing
(C) Tourism
(D) Fishing

2. Which air pollutant is most commonly associated with vehicle emissions?
(A) Carbon monoxide (CO)
(B) Nitrogen gas (N₂)
(C) Helium (He)
(D) Oxygen (O₂)

3. What is smog primarily a mixture of?
(A) Smoke and fog
(B) Sand and water
(C) Dust and pollen
(D) Oil and air

4. Which Pakistani city frequently ranks among the most polluted in the world?
(A) Karachi
(B) Lahore
(C) Quetta
(D) Peshawar

5. Which of the following health problems is not commonly caused by air pollution?
(A) Asthma
(B) Lung cancer
(C) Skin tanning
(D) Bronchitis

6. Which gas is mainly responsible for acid rain?
(A) Sulfur dioxide (SO₂)
(B) Oxygen (O₂)
(C) Methane (CH₄)
(D) Hydrogen (H₂)

7. What is the role of trees in reducing air pollution?
(A) Absorb harmful gases and release oxygen
(B) Produce carbon monoxide
(C) Increase smog
(D) Emit industrial waste

8. What is AQI in relation to air pollution?
(A) Air Quality Index
(B) Air Quantification Instrument
(C) Annual Quality Indicator
(D) Atmospheric Quotient Indicator

9. What is the main source of indoor air pollution in rural Pakistan?
(A) Plastic burning
(B) Use of traditional stoves and biomass fuels
(C) Spraying perfumes
(D) Refrigerator gases

10. Which of the following is an effective method to reduce air pollution?
(A) Cutting more trees
(B) Increasing car usage
(C) Promoting public transport and clean energy
(D) Burning garbage