UPSC Environment Archives - UPSC SHORT NOTES https://upscshortnotes.com/tag/upsc-environment/ Sun, 08 Mar 2026 13:21:36 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 Which of the following is a balanced fertiliser for plants? (UPSC Prelims/1979) https://upscshortnotes.com/which-of-the-following-is-a-balanced-fertiliser-for-plants-upsc-prelims-1979/?utm_source=rss&utm_medium=rss&utm_campaign=which-of-the-following-is-a-balanced-fertiliser-for-plants-upsc-prelims-1979 Sun, 08 Mar 2026 13:21:36 +0000 https://upscshortnotes.com/?p=357 Q. Which of the following is a balanced fertiliser for plants? (a) Urea (b) Ammonia sulphate (c) Nitrates (d) Compost […]

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Q. Which of the following is a balanced fertiliser for plants?
(a) Urea
(b) Ammonia sulphate
(c) Nitrates
(d) Compost

✅ Correct Answer: (d) Compost

Compost is an organic fertiliser made from decomposed plant and animal waste.
It provides a balanced supply of nutrients to plants.
It also improves soil structure and water retention.
Hence compost is considered a balanced and eco-friendly fertiliser.

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]]> The most common substance responsible for pollution is UPSC Prelims/1979) https://upscshortnotes.com/the-most-common-substance-responsible-for-pollution-is/?utm_source=rss&utm_medium=rss&utm_campaign=the-most-common-substance-responsible-for-pollution-is Sun, 08 Mar 2026 11:06:30 +0000 https://upscshortnotes.com/?p=336 Q. The most common substance responsible for pollution is (a) Smoke (b) Carbon dioxide (c) Sulphur dioxide (d) Carbon monoxide […]

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Q. The most common substance responsible for pollution is
(a) Smoke
(b) Carbon dioxide
(c) Sulphur dioxide
(d) Carbon monoxide

✅ Correct Answer: (a) Smoke

Explanation
Smoke is one of the most common substances responsible for air pollution. It consists of a mixture of gases and fine particles released mainly from the burning of fuels such as coal, wood, oil, and other organic materials.

Sources of Smoke Pollution
• Burning of fossil fuels in industries and power plants
• Vehicle exhaust emissions
• Burning of biomass and firewood
• Forest fires and crop residue burning

Major Air Pollutants
• Carbon monoxide (CO)
• Sulphur dioxide (SO₂)
• Nitrogen oxides (NOx)
• Particulate matter (PM2.5 and PM10)
• Ozone (O₃)

Effects of Air Pollution
• Respiratory diseases like asthma and bronchitis
• Environmental problems such as smog and acid rain
• Damage to plants and ecosystems
• Contribution to climate change

Important Related Concepts for Exams
Smog → Mixture of smoke and fog causing severe air pollution
Acid Rain → Caused by sulphur dioxide and nitrogen oxides reacting with water vapour
Greenhouse Gases → Carbon dioxide, methane, nitrous oxide etc.
Particulate Matter → Tiny particles suspended in air harmful to lungs

Measures to Control Air Pollution
• Use of cleaner fuels
• Promotion of renewable energy sources
• Installation of filters in industries
• Afforestation and environmental protection

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