Composition of Air and Its Properties Quiz
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Questions and Answers

Which gas makes up the largest percentage of air?

  • Oxygen
  • Nitrogen (correct)
  • Carbon
  • Water vapor
  • Which gas is responsible for turning hydrogencarbonate indicator from red to yellow?

  • Carbon dioxide (correct)
  • Water vapor
  • Oxygen
  • Noble gases
  • Which gas relights a glowing splint?

  • Carbon dioxide
  • Noble gases
  • Oxygen (correct)
  • Water vapor
  • What happens to dry cobalt chloride paper when exposed to carbon dioxide?

    <p>It turns from blue to pink</p> Signup and view all the answers

    What happens to limewater when exposed to carbon dioxide?

    <p>It turns from colorless to milky</p> Signup and view all the answers

    What are the raw materials for photosynthesis?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    What are the products of photosynthesis?

    <p>Food (glucose) and oxygen</p> Signup and view all the answers

    Where does photosynthesis take place?

    <p>Only in plants</p> Signup and view all the answers

    What are the raw materials for respiration?

    <p>Food (glucose) and oxygen</p> Signup and view all the answers

    What are the products of respiration?

    <p>Carbon dioxide and water</p> Signup and view all the answers

    Which process is responsible for the net release of oxygen in plants during the daytime?

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

    What is the main function of the human diaphragm?

    <p>To control breathing</p> Signup and view all the answers

    Where does gas exchange occur in the human respiratory system?

    <p>Air sacs</p> Signup and view all the answers

    What happens to oxygen in the air sacs during gas exchange?

    <p>It is released into the blood</p> Signup and view all the answers

    What is the main cause of global warming?

    <p>Increasing carbon dioxide levels</p> Signup and view all the answers

    What are common air pollutants that can cause respiratory issues?

    <p>Sulphur dioxide and suspended particulates</p> Signup and view all the answers

    What does the AQHI measure?

    <p>Air quality</p> Signup and view all the answers

    What does a higher AQHI index indicate?

    <p>Poorer air quality</p> Signup and view all the answers

    What are the potential health effects of air pollutants?

    <p>Cancer and heart disease</p> Signup and view all the answers

    What is the relationship between photosynthesis and respiration in maintaining the balance of carbon dioxide and oxygen in nature?

    <p>Photosynthesis produces oxygen and respiration produces carbon dioxide</p> Signup and view all the answers

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