Smog and its causes

What is the primary cause of photochemical smog?

• • A) Burning of coal and oil

• • B) Reaction of sunlight with pollutants like NOx and VOCs

• • C) Industrial emissions

• • D) Natural forest fires

Classical smog primarily consists of:

• • A) Ground-level ozone

• • B) Nitrogen oxides

• • C) Sulfur dioxide and particulate matter

• • D) Volatile organic compounds

Which of the following is NOT a cause of photochemical smog?

• • A) Nitrogen oxides

• • B) Volatile organic compounds

• • C) Sulfur dioxide

• • D) Sunlight

What triggers the formation of ground-level ozone in photochemical smog?

• • A) Sunlight reacting with sulfur dioxide

• • B) Sunlight triggering reactions among NOx and VOCs

• • C) Industrial emissions

• • D) Natural gas combustion

Classical smog is also known as:

• • A) Industrial haze

• • B) Ozone fog

• • C) Sulfurous smog

• • D) Nitrogen haze

Which human activity contributes significantly to the formation of classical smog?

• • A) Use of cleaner energy sources

• • B) Agricultural practices

• • C) Burning of coal or oil

• • D) Preservation of forests

What reaction creates classical smog when sulfur-containing fuels are burned?

• • A) Mixing of sulfur dioxide with fog or moisture

• • B) Release of nitrogen oxides

• • C) Formation of ground-level ozone

• • D) Formation of volatile organic compounds

What weather conditions are conducive to the creation of sulfurous smog?

• • A) Rainy and humid

• • B) Dry and hot

• • C) Windy and cold

• • D) Foggy and windy

Which type of smog is more common in urban areas with heavy traffic and intense sunlight?

• • A) Classical smog

• • B) Industrial smog

• • C) Sulfurous smog

• • D) Photochemical smog

1. What is the primary source of pollutants responsible for photochemical smog?

• • A) Forest fires

• • B) Agricultural activities

• • C) Industrial emissions

• • D) Vehicle exhaust