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Importance of Hydrogen in Organic Compounds Quiz
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Importance of Hydrogen in Organic Compounds Quiz

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Questions and Answers

What is the principal source of hydrogen on Earth?

  • Natural gas
  • Acids
  • Water (correct)
  • Petroleum
  • Why are organic compounds called 'organic'?

  • Because they are obtained from living organisms (correct)
  • Because they are easily decomposable
  • Because they are found in vegetable matter
  • Because they contain carbon and hydrogen
  • What is the ratio of hydrogen to oxygen when water decomposes by electrolysis?

  • 4:1
  • 1:1
  • 3:1
  • 2:1 (correct)
  • Which electrode collects hydrogen during the electrolysis of water?

    <p>Negative electrode</p> Signup and view all the answers

    What is the role of acids and alkalis in liberating hydrogen gas?

    <p>They react chemically to release hydrogen</p> Signup and view all the answers

    Why is water acidulated before electrolysis in the preparation of hydrogen?

    <p>To make it a better conductor of electricity</p> Signup and view all the answers

    What is the main component of organic compounds that form the body of animals and vegetable matter?

    <p>Hydrogen</p> Signup and view all the answers

    If there was no hydrogen in the universe, what would be missing?

    <p>Both sunlight and heat</p> Signup and view all the answers

    What are acids, alkalis, petroleum, and natural gas examples of?

    <p>Hydrogen compounds</p> Signup and view all the answers

    Which process liberates hydrogen and oxygen by passing an electric current through acidulated water?

    <p>Decomposition</p> Signup and view all the answers

    Why are organic compounds called 'organic'?

    <p>They are obtained from living organisms</p> Signup and view all the answers

    In the electrolysis of water, what is collected at the anode?

    <p>Oxygen</p> Signup and view all the answers

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