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

Subjects

RELATED QUESTIONS

Chemical Equations

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

ScienceIf heat is shown as a reactant on the left side of a chemical equation and one compound breaks down to form two or more products, what is the correct identification of the reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1ExpertScienceIf heat is written on the products side of a chemical equation, what is the nature of the reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1EasyScienceIf the reaction vessel becomes very cold during a chemical reaction, what is the correct conclusion about the energy change?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1ExpertScienceIn terms of oxygen, which correctly identifies oxidation and reduction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1ExpertScienceWhich solid product is formed when calcium carbonate is strongly heated?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1ExpertScienceIn the balanced equation \(2Mg + O_2 \rightarrow 2MgO\), what is the total number of oxygen atoms on the product side?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1ExpertScienceWhy is it incorrect to change the subscripts in a chemical formula while balancing a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 1ExpertScienceWhich arrangement is most suitable for reliably testing the law of conservation of mass?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceWhich of the following is a chemical change but not a precipitation reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceWhat is the correct difference between the symbols (aq) and (l) in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceA student writes the rusting reaction as \(Fe + H_2O \to Fe_2O_3 + H_2\). What is the most fundamental error in this statement?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceIf gas evolves in an unknown reaction but colour does not change what is the most careful conclusion?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceWhy should a chemical reaction not be confirmed carelessly from colour change alone?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceA student writes the reaction on placing an iron nail in aqueous copper sulfate solution as: \(2Fe + 3CuSO_4 \rightarrow Fe_2(SO_4)_3 + 3Cu\). What correction is required in the equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceWhich of the following is a double displacement reaction that forms a precipitate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceA student heated 12.0 g of calcium carbonate in an open crucible and obtained 6.7 g of solid. Which evaluation is correct?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceWhich correctly identifies oxidation and reduction in the following reaction? \(\mathrm{Zn + CuSO_4 \rightarrow ZnSO_4 + Cu}\)Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceIf the product side of a balanced chemical equation contains two water molecules, \(2\mathrm{H_2O}\), what total number of hydrogen atoms must be present on the reactant side?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceWhat happens if the subscripts in the chemical formula of a compound are changed while balancing a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5HardScienceLimestone, \(\mathrm{CaCO_3}\), is heated in a sealed container and decomposes into calcium oxide and carbon dioxide. If the carbon dioxide does not escape, what is the correct conclusion about the total mass of substances before and after the reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard