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

Chemical Reactions

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

ScienceWhat is the correct difference between the symbols (aq) and (l) in a chemical equation?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceIf 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 5Hard ScienceWhy should a chemical reaction not be confirmed carelessly from colour change alone?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceWhich statement identifies a reaction as a displacement reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceHow is chewing food different from digesting it?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceIn the thermite reaction \(Fe_2O_3 + 2Al \rightarrow Al_2O_3 + 2Fe\), which substance is reduced?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceA 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 5Hard ScienceWhen an iron nail is placed in a blue copper sulphate solution, the solution 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 5Hard ScienceIn the reaction \(2\mathrm{FeCl_3} + \mathrm{SnCl_2} \rightarrow 2\mathrm{FeCl_2} + \mathrm{SnCl_4}\), which substance is the reducing agent?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceWhen a zinc strip is placed in a blue copper sulphate solution, which observation indicates a displacement reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceA student states that the reaction \(2\mathrm{Mg}+\mathrm{O}_2\rightarrow2\mathrm{MgO}\) is not a displacement reaction because no element replaces another element from a compound. The student is correct because this reaction is which type of reaction?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceWhy does oily food kept in warm, open air spoil quickly?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceA student places an iron nail in a blue copper sulphate solution. After some time, a reddish-brown coating appears on the nail and the solution turns light green. What type of reaction is this?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard SciencePainting and oiling prevent rusting based on which common principle?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceUnder which condition will iron rust the most?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhat is the correct order of the processes in which hydrogen is removed from a substance and then added to a substance?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Medium ScienceWhen aqueous barium chloride and sodium sulfate are mixed, which pair of ions combines to form the white precipitate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceWhich of the following is a double displacement reaction that forms a precipitate?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceIn the reaction between copper(II) oxide and hydrogen, the formation of water indicates the oxidation of which substance?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard ScienceWhen copper(II) oxide is heated with hydrogen gas, what change occurs in the copper(II) oxide?Class 10Chemical Substances – Nature and BehaviourChemical Reactions and EquationsLevel 5Hard