CTET 2 Math and Science 10 Jan 2022 Paper

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Question : 90 of 150

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Mr. Mahesh taught the concept of 'factors affecting combustion.'
Which one of the following is the BEST example of an 'authentic task' to assess students on their understanding of factors affecting combustion?

Design an alarm system which can set off before a substance reaches the ignition temperature.
Describe how water and air affect combustion.
List the substances around you that are inflammable in nature.
Create a fire extinguisher using commonly available items.

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