Space Exploration and Biogas Introduction
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Questions and Answers

What is the primary use of liquid hydrogen in space exploration?

  • As rocket fuel in combination with liquid oxygen (correct)
  • For lighting streetlamps
  • To convert sewage into biogas
  • As a source of renewable energy

When did India and China start developing small-scale biogas digesters for farmers?

  • 1960s (correct)
  • Late 18th Century
  • 1898
  • 17th Century

Who identified methane as the flammable gas produced during the decomposition of organic matter?

  • Bombay
  • Jan Baptise van Helmont
  • John Dalton (correct)
  • Humphrey Davy

What prompted renewed interest in biogas systems in the early 21st Century?

<p>Rising fossil fuel prices (C)</p> Signup and view all the answers

Which century saw the establishment of the first significant anaerobic digestion plant in Bombay?

<p>1859 (D)</p> Signup and view all the answers

Why is liquid hydrogen utilized in combination with liquid oxygen for launch vehicles?

<p>As rocket fuel for launch vehicles (D)</p> Signup and view all the answers

What are the main components of biomass found in wood, crop residues, and organic waste?

<p>Cellulose, Hemicellulose, Lignin (D)</p> Signup and view all the answers

Which method is NOT a thermochemical conversion process used for biomass?

<p>Fermentation (A)</p> Signup and view all the answers

What is the primary source of energy for activities like cooking and space heating in many parts of the world?

<p>Wood and agricultural products (D)</p> Signup and view all the answers

Which of the following is NOT a synonym for biomass briquettes?

<p>Energy bricks (C)</p> Signup and view all the answers

What type of energy applications can be achieved by utilizing biomass?

<p>Renewable energy and waste reduction (D)</p> Signup and view all the answers

Algae mainly consist of which components useful for energy production?

<p>Carbohydrates, Lipids, Proteins (A)</p> Signup and view all the answers

What is the heating value of a briquette made from pure charcoal particles?

<p>24.9 MJ/kg (C)</p> Signup and view all the answers

Which organic material is NOT commonly used in biomass briquettes?

<p>Plastic waste (D)</p> Signup and view all the answers

What is the ash content of a briquette made from pure charcoal particles?

<p>6.0% (D)</p> Signup and view all the answers

What are the carbon, hydrogen, and oxygen contents of a briquette made from pure charcoal particles?

<p>Carbon: 49.5%, Hydrogen: 5.1%, Oxygen: 40.2% (C)</p> Signup and view all the answers

Which type of waste was NOT mentioned as a source for biomass briquettes?

<p>Paper waste (B)</p> Signup and view all the answers

What is the purpose of industrial briquetting machines?

<p>To create compact and sustainable fuel sources (D)</p> Signup and view all the answers

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