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Dissolving

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

ScienceThe amount of sugar is increased in intervals of (1,\text{g}) and dissolving time is measured. What type of variable is the amount of sugar?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceAn experiment tests the effect of water temperature on dissolving rate. The amount of sugar is also changed with temperature. What is the main problem?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHard ScienceWhile testing the effect of water temperature on the dissolving time of a tablet, what should be controlled?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhile testing the effect of water temperature on the rate of sugar dissolving, which could be a controlled variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceIn a sugar dissolving experiment what is keeping water volume the same?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceA student uses spoons of different sizes to stir sugar and measures dissolving time. What is spoon size?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceIn the sugar dissolving experiment what type of variable is water temperature?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhich hypothesis can be shown false by an experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceHow should the amount of sugar be kept in a dissolving experiment?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceWhile testing the effect of water temperature on the rate of salt dissolving what type of variable is temperature?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasy ScienceA student tests the effect of temperature on sugar dissolving time but uses fine sugar in hot water and large crystals in cold water. What is the main problem?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert 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 ScienceA student wants to test whether stirring speed affects the time taken for sugar to dissolve. Which factor should be kept constant for a fair experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceA student uses a different amount of sugar each time in an experiment on dissolving in hot water. What problem will arise?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIf the effect of water temperature on dissolving rate is tested which factor should be kept constant?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIn which experiment is the independent variable most clearly identified?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceIn which experiment is time the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationEasy ScienceIn the same experiment what would be the independent variable?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationEasy ScienceA student uses a different amount of salt each time although the question concerns temperature. What has the salt amount become?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsExpert ScienceA student concludes that sugar always dissolves faster in hot water after only one trial. What is the main weakness of this conclusion?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsExpert