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In an experiment a student observed colour using different amounts of liquid each time. Why is a correct conclusion difficult?

Answer and explanation

Correct answer: Liquid volume is an additional variable affecting the observation

Different volumes may affect colour intensity so volume should be kept constant. Control observation conditions.

Related tags

Controlled VariableColour ObservationLiquid VolumeScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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