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Why is it necessary to write the unit of measurement in an experiment?

Answer and explanation

Correct answer: To make the meaning of the measurement clear

Direct answer: Option C, to make the meaning of the measurement clear. A numerical reading needs a unit because the unit identifies the quantity and scale being reported. For example, 10 could mean 10 centimetres, 10 seconds, or 10 grams; these are entirely different observations. Writing “10 cm” tells the reader both the value and the measured length. Option A is wrong because a unit does not decorate or colour a table. Option B is wrong because units do not change a hypothesis. Option C is correct because it makes observations understandable, comparable, and scientifically complete. Option D is wrong because a unit does not stop an experiment. Always write the suitable unit beside every measurement and do not confuse units such as cm and m.

Related tags

Measurement UnitData RecordingExperimentHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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