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ICSE Class 7 Chemistry Question 20 of 20

Air & Atmosphere — Question 5

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Question

Question 5

Draw a neat labelled diagram for each of the following experiments.

  1. To determine the component of air used up in burning, by using phosphorus and a bell jar.

  2. To study the presence of carbon dioxide in air.

  3. To prove that oxygen is non-combustible, but supports combustion.

  4. To prepare oxygen in the laboratory from hydrogen peroxide and a catalyst.

  5. To demonstrate the burning of sulphur in a jar of oxygen.

Answer
  1. To determine the component of air used up in burning, by using phosphorus and a bell jar.
Describe simple experiment to show the presence of oxygen and nitrogen component in air using a bell jar. Air & Atmosphere, Simplified Chemistry Dalal Solutions ICSE Class 7.
  1. To study the presence of carbon dioxide.
Describe simple experiment to show the presence of carbon dioxide in air using a test tube with outlets containing lime water. Air & Atmosphere, Simplified Chemistry Dalal Solutions ICSE Class 7.
  1. To prove that oxygen is non-combustible, but supports combustion.
Draw a neat labelled diagram to prove that oxygen is non-combustible, but supports combustion. Air & Atmosphere, Simplified Chemistry Dalal Solutions ICSE Class 7.
  1. To prepare oxygen in the laboratory from hydrogen peroxide and a catalyst.
Draw a neat and labelled diagram for the method used in laboratory preparation of oxygen from hydrogen peroxide. Air & Atmosphere, Simplified Chemistry Dalal Solutions ICSE Class 7.
  1. To demonstrate the burning of sulphur in a jar of oxygen.
Draw a neat labelled diagram to demonstrate the burning of sulphur in a jar of oxygen. Air & Atmosphere, Simplified Chemistry Dalal Solutions ICSE Class 7.