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ZIMSEC O-Level Chemistry

Liquefaction and fractional distillation of air

Liquefaction and fractional distillation of air in ZIMSEC O-Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic28 practice questions2 lessons

Overview

Form 4 (competency matrix 8.25.4), including the composition of air.

Learning objectives

What the syllabus expects you to be able to do.

  1. 7.2.2.12Describe the liquefaction and fractional distillation of air.
  2. 7.2.2.13Identify the uses of oxygen, nitrogen, carbon dioxide and the noble gases.

Lessons

  • Liquefaction and fractional distillation of air

    30 min

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  • The noble gases

    15 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Liquefaction and fractional distillation of air: sample question

1 mark

True or false: air is a mixture, not a compound.

Is the statement true or false?

Turn Liquefaction and fractional distillation of air into a strength.

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