Social Science (087) — CBSE Class 10 board question

Three factors responsible for air pollution are:

1. Industrial emissions: Smoke emitted by chemical factories, brick kilns, refineries, and smelting plants releases harmful gases like sulphur dioxide and carbon monoxide into the atmosphere.

1. Burning of fossil fuels: Big and small factories that burn fossil fuels and ignore pollution norms release airborne particulate matter — dust, mist, and smoke — causing air pollution.

1. Toxic gas leaks: Accidental leakage of toxic gases from industries (e.g., Bhopal Gas Tragedy) can be extremely hazardous, causing long-term damage to human health and the environment.

Source: Industrial Pollution and Environmental Degradation, Chapter 6

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• This is a 3-mark question, so name and briefly explain three distinct factors — one point per mark.
• The examiner expects factors drawn from the textbook: industrial smoke, fossil fuel burning, and toxic gas leaks are the clearest examples given.
• Avoid listing water or noise pollution factors here — stay focused on air pollution only.
• Mentioning the Bhopal Gas Tragedy as an example adds accuracy and shows textbook knowledge.