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Class 10 Science

Class 10 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceWhich main acid is present in lemon juice?Class 10Chemical Substances – Nature and BehaviourAcids, Bases, and SaltsLevel 8EasyScienceWhich process do antioxidants slow down in food?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5ExpertScienceHow does the zinc layer protect iron in galvanisation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5ExpertScienceIf substance A loses oxygen and substance B loses hydrogen which processes occur respectively?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5ExpertScienceAt which electrode is the gas with greater volume obtained during electrolysis of water?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5ExpertScienceWhat is the main difference between a skeletal equation and a balanced equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5ExpertScienceIn an unknown process a new substance formed gas evolved and total mass remained same in a closed container. What is the most suitable conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhat is the correct difference in direction of energy between photosynthesis and respiration?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhy is respiration considered different from combustion yet an energy releasing chemical process?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhen an iron nail is placed in a blue copper sulphate solution, the solution gradually turns green and a reddish-brown coating forms on the nail. What type of reaction is this?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceIf heat is written on the product side and the container is hot what is the correct conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceIf a container becomes cold and gas also evolves what is the most careful conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceHow does a nitrogen filled packet protect oily food?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhat is the most correct reason why oily food kept in warm open air spoils quickly?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhat is the basic chemical cause of rancidity of oils and fats?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhat is the main reason why an oiled iron object rusts less?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhy can rusting start when the paint layer on iron is scratched?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhich pair is most essential for rusting of iron?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceWhy is hydrogen oxidised in the reaction between copper oxide and hydrogen?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4ExpertScienceFormation of white solid barium sulphate shows which dual identification?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 4Expert