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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।

ScienceWhich option gives a controlled variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceHow should the size of ice pieces be kept in a melting investigation?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat is the main purpose of a controlled variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat difficulty arises if several factors change at the same time?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceHow should the amount of water be kept while testing the effect of light on a plant?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat may happen if controlled variables are not kept the same in an experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhich variable is kept constant to make an experiment fair?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhy should the size of the ice cube be kept the same in a melting experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat problem occurs if both light and water are changed in one experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceFor a fair experiment how many independent variables should be changed at one time?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhat happens if the control group accidentally receives a small amount of the treatment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceWhich experimental plan would test a cause and effect relationship most reliably?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIn an experiment there should be only one difference between the control group and test group. What is the main reason?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student investigates whether fertilizer amount affects plant growth. If the pot with more fertilizer also receives more light what is the main problem?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student investigates whether water temperature affects dissolving rate. Which procedure would be fairest?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceWhich result would most strongly support the hypothesis that increasing surface area increases the rate of dissolving?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student tests whether music affects study performance. Which control is most essential?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student tests soap cleaning ability using different types of stains on different fabrics. What is the greatest weakness?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA hypothesis states that more exercise increases pulse rate. Which experimental plan is the fairest?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIf the hypothesis that sugar dissolves faster in warm water is tested what should be properly controlled?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard