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Class 9 Mcq

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

ScienceA survey included only people who volunteered to participate. What problem may this illustrate?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhat is measurement reliability most closely related to?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhich question is most closely related to the validity of an experiment?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhat is the correct meaning of scientific consensus?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceIf a result appears in only one laboratory and others cannot reproduce it what conclusion is appropriate?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceA scientific claim is supported only by saying that a famous scientist accepted it. What is the main problem?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceIn an experiment the person measuring outcomes knows which group received treatment. Which risk increases?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceIf a researcher publishes only positive results what problem may arise in scientific literature?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceA student says that a plant is diseased because its leaves are curled. Which statement is an inference?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhich is the best way to maintain scientific objectivity?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceA study has a very large sample but it was taken only from one expensive urban school. What is the main problem?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhat is the best test of the usefulness of a scientific model?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhich statement about scientific laws and theories is incorrect?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhich characteristic is most important in strengthening a scientific theory?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhich problem may be reduced but not completely eliminated by averaging several measurements?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceIf a measuring instrument gives a result two units above the true value every time what does this indicate?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceTwo studies produced opposite results. What should the scientific community examine first?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceA hypothesis claims that it will be correct regardless of the result. Why is it scientifically weak?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceWhy is it not contradictory to call scientific knowledge both reliable and revisable?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1HardScienceA student concluded that fertiliser makes plants grow faster but also gave more water to fertilised plants. What is the main weakness of the conclusion?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceLevel 1Hard

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