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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।

ScienceA student observed five cells under a microscope and concluded that all cells in the tissue are the same size. Why is the conclusion weak?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsExpert ScienceFish abundance in a pond was estimated by observing only near the shore. What is the main sampling problem?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsExpert ScienceObservers in a bird study record notes only in the morning. What is the main limitation of drawing conclusions about behaviour throughout the day?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsExpert ScienceWhy may observing only one small spot be insufficient for estimating insect numbers in an area?Class 9Exploration: Entering the World of Secondary ScienceScientific questions and observationsHard ScienceA researcher described the experimental method in detail but did not explain sample selection. Which assessment becomes difficult?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceHard ScienceIf a sample is large but selected with bias which statement is correct?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceHard ScienceA 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 scienceHard ScienceWhy is a large sample useful in a scientific study?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceMedium ScienceA study sampled students from only one school. What is the problem with applying its conclusion to students across the country?Class 9Exploration: Entering the World of Secondary ScienceNature and meaning of scienceHard