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UPSC CDS Science & Technology — practice questions — page 6

Explore 300 free Science & Technology questions in UPSC CDS Science. Open each question or exercise to read its content, reference answers and available explanation.

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Science & Technology questions and exercises with answers

Showing questions 151–180 of 300.

Sunlight and air are examples of which kind of natural resource?Read the answer and worked solution →Coal, petroleum and natural gas are called fossil fuels because they formed from:Read the answer and worked solution →The dense wetland forests that became coal were buried about how many years ago?Read the answer and worked solution →The slow conversion of dead vegetation into coal is called:Read the answer and worked solution →Which coal product is an almost pure form of carbon used in steel making?Read the answer and worked solution →Coal tar is a mixture of about how many substances?Read the answer and worked solution →Naphthalene balls that repel moths are obtained from:Read the answer and worked solution →Which petroleum product has replaced coal tar for metalling roads?Read the answer and worked solution →Coal gas was first used for street lighting in 1810 in:Read the answer and worked solution →The word petroleum derives from petra and oleum, meaning:Read the answer and worked solution →Petroleum formed from the remains of organisms living in:Read the answer and worked solution →In underground deposits, the petroleum and gas layer lies above water because oil and gas are:Read the answer and worked solution →The world's first oil well was drilled in 1859 in:Read the answer and worked solution →Oil was first struck in India in 1867 at:Read the answer and worked solution →Which fossil fuel is stored at high pressure as CNG and is a cleaner transport fuel?Read the answer and worked solution →Hydrogen obtained from natural gas is used to make which fertiliser?Read the answer and worked solution →Because of its great commercial importance, petroleum is also called:Read the answer and worked solution →A CNG pipeline network supplying homes exists in parts of Delhi and which Gujarat city?Read the answer and worked solution →Natural gas in India has been found in Rajasthan, Maharashtra, the Krishna Godavari delta and:Read the answer and worked solution →Which body advises Indians on saving petrol and diesel while driving?Read the answer and worked solution →Separating the constituents of petroleum is known as:Read the answer and worked solution →Petrochemicals from petroleum and natural gas are used to make polythene, nylon and:Read the answer and worked solution →Catch the fossil fuelsRead the answer and worked solution →Pop the coal productsRead the answer and worked solution →Run the fuel historyRead the answer and worked solution →Slice the fuel wordsRead the answer and worked solution →From coal or from petroleumRead the answer and worked solution →Sort coal, oil and gasRead the answer and worked solution →Type the numberRead the answer and worked solution →Coal and petroleum bingoRead the answer and worked solution →

Worked practice questions

Sunlight and air are examples of which kind of natural resource?

  1. Inexhaustible
  2. Exhaustible
  3. Fossil based
  4. Mineral based
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Correct answer: A. Inexhaustible

1. They exist in unlimited quantity. 2. Sunlight and air are inexhaustible. 3. Coal and forests are exhaustible. _Source: syllabus Science, Chapter 5, Coal and Petroleum._

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Coal, petroleum and natural gas are called fossil fuels because they formed from:

  1. Meteor dust
  2. Dead organisms
  3. Volcanic rocks
  4. Sea salt beds
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Correct answer: B. Dead organisms

1. They took millions of years to form. 2. Dead remains of living organisms became fuel. 3. They cannot be made in a laboratory. _Source: syllabus Science, Chapter 5, Coal and Petroleum._

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The dense wetland forests that became coal were buried about how many years ago?

  1. 300 million
  2. 30 million
  3. 3 million
  4. 300 thousand
Show answer and solution

Correct answer: A. 300 million

1. Flooding buried low-lying forests. 2. This was about 300 million years ago. 3. Pressure and heat turned them to coal. _Source: syllabus Science, Chapter 5, Coal and Petroleum._

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