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Cambridge IGCSE Combined Science practice

What is the largest component of clean, dry air?

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Show answerAir quality and climate revisionRevise the key idea

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MCQ

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cambridge_mcq

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Topic

Air quality and climate

Exam-style question

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What is the largest component of clean, dry air?.

  1. A.Oxygen
  2. B.Nitrogen
  3. C.Carbon Dioxide
  4. D.Argon

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Paper 3 structured question: Air quality and climate

Paper 3Theory (Core)2 marks

Description

Composition of Clean, Dry Air

Clean, dry air consists of approximately 78% nitrogen, 21% oxygen, and the remaining 1% is made up of noble gases and carbon dioxide.

  1. a

    Identify List the main components of clean, dry air and their approximate percentages.

    Aim for approximately 2 distinct marking points.

    [2]