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Class 9 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceWhy is the control group as important as the treatment group in an experiment?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsHardScienceWhat is the main purpose of a control group in a scientific question?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsHardScienceWhen is a control group useful in a scientific investigation?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsMediumScienceA report gives only percentage increase but not the starting value. What confusion may arise?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceExpertScienceWhat becomes most difficult when a scientific study has no control group?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceHard

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