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CTET Natural Resource — practice questions — page 2

Explore 55 free Natural Resource questions in CTET Science. Open each question or exercise to read its content, reference answers and available explanation.

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Natural Resource questions and exercises with answers

Showing questions 31–55 of 55.

Bioethanol is an alcohol made by what process?Read the answer and worked solution →Biodiesel is made fromRead the answer and worked solution →Biogas is mainly a mixture of methane and which other gas?Read the answer and worked solution →Biogas is produced from manure and sewage by which kind of microbes?Read the answer and worked solution →Which fibre listed here is obtained directly from a plant?Read the answer and worked solution →Overfishing means taking sea wildlife at rates too high for the fished species toRead the answer and worked solution →Which fish is named as endangered by overfishing for its meat?Read the answer and worked solution →How does deforestation contribute to global warming?Read the answer and worked solution →Cutting down forests makes soil more prone to erosion because itRead the answer and worked solution →Which is the best-known worldwide conservation status listing of threatened species?Read the answer and worked solution →A fossil fuel is formed from the buried remains ofRead the answer and worked solution →Fossil fuels originate from which kind of decomposition of buried dead organisms?Read the answer and worked solution →Which type of plants mainly form coal?Read the answer and worked solution →Petroleum and natural gas formed largely from the sedimented remains ofRead the answer and worked solution →The energy released by burning fossil fuels is originallyRead the answer and worked solution →Which fossil fuel enabled the Industrial Revolution when first used widely in steam engines?Read the answer and worked solution →Which fuels are made from fossil fuels and power cars and trucks?Read the answer and worked solution →Natural gas deposits are the main source of which noble gas?Read the answer and worked solution →Which gas released by burning fossil fuels accelerates climate change?Read the answer and worked solution →Acid rain from burning fossil fuels contains which acids?Read the answer and worked solution →Why are marble and limestone monuments damaged by acid rain?Read the answer and worked solution →Which alternative reduces dependence on fossil fuels?Read the answer and worked solution →Which of these natural resources is replenished by natural processes if used at a limited rate?Read the answer and worked solution →Which economic model relies less on extraction and more on reuse and recycling?Read the answer and worked solution →Which item below is taken directly from nature with few changes?Read the answer and worked solution →

Worked practice questions

Bioethanol is an alcohol made by what process?

  1. Fermentation
  2. Oil distillation
  3. Nuclear fission
  4. Electrolysis
Show answer and solution

Correct answer: A. Fermentation

1. Bioethanol comes from sugar or starch crops such as sugarcane. 2. It is made by fermentation of carbohydrates. 3. Crude oil distillation gives fossil products. _Source: Wikipedia, Renewable resource, Biofuel_

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Biodiesel is made from

  1. coal tar and pitch
  2. plant oils, animal fats
  3. natural gas liquids
  4. uranium ore pellets
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Correct answer: B. plant oils, animal fats

1. Biodiesel is a biofuel. 2. It is made from vegetable oils and animal fats. 3. Coal tar, natural gas and uranium are not biological oils. _Source: Wikipedia, Renewable resource, Biofuel_

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Biogas is mainly a mixture of methane and which other gas?

  1. Oxygen gas
  2. Helium gas
  3. Carbon dioxide
  4. Argon gas
Show answer and solution

Correct answer: C. Carbon dioxide

1. Biogas forms when organic matter breaks down without oxygen. 2. It is primarily methane (CH4) and carbon dioxide (CO2). 3. Small amounts of hydrogen sulphide may be present. _Source: Wikipedia, Renewable resource, Biogas_

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