Skip to content

Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

RELATED QUESTIONS

Confounding Variable

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

ScienceIn which situation will the validity of an experiment decrease most?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceIf water amount also changes while testing the effect of fertiliser on plant growth what will water amount become?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentMedium ScienceWhile testing the effect of music on plant growth the plants were kept in different rooms. One room was also warmer. What type of problem is this?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceA 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 experimentationExpert ScienceIf one group is observed in the morning and the other in the evening what problem may arise?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert ScienceIn an experiment pot size also changes while water amount is varied. What is pot size called?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationExpert 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 ScienceA student tests seed germination at three temperatures but uses a different seed type at each temperature. Why will interpretation be difficult?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student tests the relationship between sound intensity and distance. Why is using a different room at each distance inappropriate?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 used a different type of soil for each group in a plant growth experiment. What type of variable did soil become?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceA student tested seed germination at different temperatures but gave different amounts of water to each group. Why will interpretation be difficult?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceWhich observation would make it inappropriate to conclude that fertilizer alone caused the growth?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceWhat is the main problem if seeds of different species are used while testing the effect of salt on germination?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationHard ScienceIn which situation will the validity of an experiment be affected most?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 two groups of plants have different soil types how will this affect an investigation of light?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceWhat problem may occur in an evaporation experiment if containers of different shapes are used?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium ScienceWhat problem arises if the seed species is also changed during an experiment?Class 9Exploration: Entering the World of Secondary ScienceHypothesis and experimentationMedium 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