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UPSC CDS Environment & Ecology — practice questions — page 2

Explore 446 free Environment & Ecology questions in UPSC CDS Geography. Open each question or exercise to read its content, reference answers and available explanation.

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Environment & Ecology questions and exercises with answers

Showing questions 31–60 of 446.

A textbook sorts pollution by the medium that carries the pollutant. Which four types result?Read the answer and worked solution →Among industry, farming and cultural activities, which is the most significant source of water pollution?Read the answer and worked solution →Heavy fertiliser use near a lake raises the level of which substance in its water?Read the answer and worked solution →What share of communicable diseases in India are water-borne, according to the World Health Organization?Read the answer and worked solution →A programme to clean the Ganga was launched under the National Mission for Clean Ganga. What is it called?Read the answer and worked solution →What are the main sources of air pollution named in the text?Read the answer and worked solution →A smoky fog hangs over a city in winter. What is it called?Read the answer and worked solution →Air pollution can make rain acidic. Which rain has the lowest pH in a city?Read the answer and worked solution →In what unit is the level of steady noise measured?Read the answer and worked solution →Which source of noise is called the biggest nuisance in cities?Read the answer and worked solution →A study found ocean noise has risen since the 1960s because of shipping. By how much?Read the answer and worked solution →Solid waste dumps breed flies and rodents. Which diseases do these carriers spread?Read the answer and worked solution →In metros like Mumbai and Chennai, what share of solid waste is collected and disposed?Read the answer and worked solution →Daurala near Meerut restored its polluted groundwater using which universal principle?Read the answer and worked solution →Roughly what share of India's population lived in rural areas in 2011?Read the answer and worked solution →Dharavi, called Asia's largest slum, lies in which city?Read the answer and worked solution →Which government mission aims to improve the quality of life in urban slums?Read the answer and worked solution →Soil erosion, waterlogging, salinisation and alkalinisation all lead to what?Read the answer and worked solution →Which agency classified India's wastelands using remote sensing?Read the answer and worked solution →Jhabua, one of India's five most backward districts, has a high concentration of which tribe?Read the answer and worked solution →In Petlawad block of Jhabua, what did each household do to revive common pasture land?Read the answer and worked solution →Catch the air pollutantsRead the answer and worked solution →Pop the water diseasesRead the answer and worked solution →Run the pollution factsRead the answer and worked solution →Slice the pollutersRead the answer and worked solution →Air or waterRead the answer and worked solution →Sort the pollutionRead the answer and worked solution →Type the numberRead the answer and worked solution →Environment bingoRead the answer and worked solution →A gas leak at a factory kills thousands. Bhopal and Chernobyl are examples of which kind of disaster?Read the answer and worked solution →

Worked practice questions

A textbook sorts pollution by the medium that carries the pollutant. Which four types result?

  1. Air, water, land and noise
  2. Hot, cold, wet and dry
  3. Urban, rural, coastal and hill
  4. Solid, liquid, gas and plasma
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Correct answer: A. Air, water, land and noise

1. Pollution is classed by the medium of transport. 2. The four types are air, water, land and noise. 3. Each has its own sources. _Source: syllabus Geography, India People and Economy, Chapter 12, Geographical Perspective on Selected Issues and Problems._

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Among industry, farming and cultural activities, which is the most significant source of water pollution?

  1. Fishing
  2. Industry
  3. Pilgrimage
  4. Tourism
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Correct answer: B. Industry

1. Humans pollute water through industry, agriculture and culture. 2. Industry is the most significant. 3. Leather, pulp, textiles and chemicals pollute most. _Source: syllabus Geography, India People and Economy, Chapter 12, Geographical Perspective on Selected Issues and Problems._

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Heavy fertiliser use near a lake raises the level of which substance in its water?

  1. Nitrate
  2. Oxygen
  3. Iron ore
  4. Rock salt
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Correct answer: A. Nitrate

1. Farm chemicals wash into rivers and lakes. 2. Fertiliser raises nitrate in surface water. 3. They also seep into groundwater. _Source: syllabus Geography, India People and Economy, Chapter 12, Geographical Perspective on Selected Issues and Problems._

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