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Control Group

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

ScienceIn which situation would a control group be most useful?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentEasyScienceWhich statement correctly distinguishes a controlled variable from a control group?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceWhile investigating the effect of salt amount on the boiling point of water why is water without salt included?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentHardScienceA student wants to test the effect of temperature on germination. Which would be an appropriate control group?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceIn an experiment two groups are kept under the same conditions but only one group receives a new treatment. What is the untreated group called?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceAn experiment found a difference between treatment and control averages but results within both groups showed very large variation. What is the most appropriate next step?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceIf the treatment group has ten plants but the control group has only one plant what is the main limitation of the comparison?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceA student places the treatment group near a window and the control group in a dark part of the room. What is the main error in testing fertiliser effect?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceWhat happens if the control group accidentally receives a small amount of the treatment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceWhich result would suggest that the hypothesised effect may be very small?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceThe plant type differs between a control group and a treatment group. What is the most likely effect?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceIn which option is the control group selected correctly?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpertScienceIf the control group shows the same change as the treatment group what may this indicate?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHardScienceIn 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 experimentationHardScienceAn experiment produced the expected result but had no control group. What is the main limitation of the conclusion?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHardScienceIf the control group also shows the treatment effect what should be checked first?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHardScienceThe control group and treatment group had different initial conditions in an experiment. What problem will this create?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHardScienceWhat is the most important function of a control group in an experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHardScienceWhat happens if the control group accidentally receives the treatment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHardScienceIn which situation is a control group most necessary?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard

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