Start learning →

UPSC CSE Science & Technology — practice questions — page 8

Explore 240 free Science & Technology questions in UPSC CSE Geography. Open each question or exercise to read its content, reference answers and available explanation.

Practise Science & Technology with Quill →

Science & Technology questions and exercises with answers

Showing questions 211–240 of 240.

The outer crust of the Earth is called the:Read the answer and worked solution →Water covers about what share of the Earth's surface?Read the answer and worked solution →On Venus and Mars, carbon dioxide forms what share of the atmosphere?Read the answer and worked solution →With no atmosphere, the Moon's surface temperature ranges from minus 190 degrees Celsius up to:Read the answer and worked solution →In coastal regions during the day, wind blows from:Read the answer and worked solution →Air rising over heated land during the day creates a region of:Read the answer and worked solution →Water vapour condenses into cloud droplets around which particles acting as nuclei?Read the answer and worked solution →In large parts of India, rains are brought by the north-east monsoon and the:Read the answer and worked solution →Organisms very sensitive to sulphur dioxide levels, used as air pollution indicators, are:Read the answer and worked solution →Fresh water is found frozen in the ice-caps at the:Read the answer and worked solution →Terrestrial life-forms need fresh water because their bodies cannot tolerate high amounts of:Read the answer and worked solution →Paper industries release which poisonous substance into water bodies?Read the answer and worked solution →Sudden release of cold water from deep dam reservoirs harms aquatic life by changing:Read the answer and worked solution →Rocks crack because the Sun heats them by day and they:Read the answer and worked solution →Which organisms release substances that powder rock surfaces to form the first thin soil layer?Read the answer and worked solution →The bits of decayed living organisms in soil are called:Read the answer and worked solution →The topmost soil layer containing humus and living organisms is the:Read the answer and worked solution →Long-term use of fertilisers and pesticides destroys soil structure by killing:Read the answer and worked solution →Nitrogen-fixing bacteria are most commonly found in the root nodules of:Read the answer and worked solution →During lightning, atmospheric nitrogen is converted into:Read the answer and worked solution →Carbon occurs in elemental form as graphite and:Read the answer and worked solution →The percentage of carbon dioxide in the atmosphere is said to have doubled since the:Read the answer and worked solution →Catch the soil makersRead the answer and worked solution →Pop the water pollutantsRead the answer and worked solution →Run the resource numbersRead the answer and worked solution →Slice the resource wordsRead the answer and worked solution →Abiotic or bioticRead the answer and worked solution →Sort the cyclesRead the answer and worked solution →Type the numberRead the answer and worked solution →Natural resources bingoRead the answer and worked solution →

Worked practice questions

The outer crust of the Earth is called the:

  1. Lithosphere
  2. Hydrosphere
  3. Atmosphere
  4. Biosphere
Show answer and solution

Correct answer: A. Lithosphere

1. Water forms the hydrosphere. 2. The rocky crust is the lithosphere. 3. Where all three meet is the biosphere. _Source: syllabus Science, Chapter 14, Natural Resources._

Open this question →

Water covers about what share of the Earth's surface?

  1. 90 per cent
  2. 75 per cent
  3. 50 per cent
  4. 25 per cent
Show answer and solution

Correct answer: B. 75 per cent

1. It is also found underground. 2. Water covers 75 per cent of the surface. 3. Most of it is saline. _Source: syllabus Science, Chapter 14, Natural Resources._

Open this question →

On Venus and Mars, carbon dioxide forms what share of the atmosphere?

  1. 95 to 97 per cent
  2. 50 to 60 per cent
  3. 20 to 30 per cent
  4. 5 to 7 per cent
Show answer and solution

Correct answer: A. 95 to 97 per cent

1. No life is known on those planets. 2. Carbon dioxide is 95 to 97 per cent there. 3. On Earth life keeps it a fraction of a per cent. _Source: syllabus Science, Chapter 14, Natural Resources._

Open this question →

How to practise

  1. Choose a Science & Technology question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Geography topics

Indian GeographyPhysical GeographyEnvironment & EcologyIndian EconomyIndian DemographicsWorld GeographyPhysiographyPopulation