Write the corresponding equation and name the product formed.Ans. (i) ZnO (s) + C (s) ———> Zn (s) + CO (g) (ii) 2Na (s) + O 2 (g) ———> 2Na 2 O (s) (iii) CuO (s) + H 2 (g) ———> Cu (s) + H 2 O (l). Reactions involving addition of oxygen are classified as oxidation reactions. For instance, H 2 + O 2 H 2 O. Chemical reactions have the same number of atoms before the reaction as after the reaction. Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. On heating, it turns into tea. It is a double displacement reaction.FeSO4(aq) + 2NH4OH(aq) → (NH4)2SO4(aq) + Fe(OH)2(s)Q.19. The heat evolved during the reaction is such that the reaction mixture starts boiling. Q11. (b) only ferric oxide. (i) Heating coal in air to form carbon dioxide is an exothermic reaction. The neutralization reaction between an acid and a base is a type of: a. Double displacement reaction. (ii) Corrosion of a metal is a serious problem. Ferrous hydroxide is formed. Write any two limitations of a chemical equation.Ans. (ii) This is a double displacement reaction. Q17. Median response time is 34 minutes and may be longer for new subjects. (2012) Answer: Fe 2 O 3 (s) + 2Al (s) → 2Fe (l) + Al 2 O 3 (l) + Heat You can also find Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes ppt and other Class 10 slides as well. Is oxidation an exothermic or endothermic reaction?Ans. Products . Chemical Equations and Reactions MIXED REVIEW SHORT ANSWER Answer the following questions in the space provided. The substances you put together in a chemical reaction and are on the left side of an equation are called. Hydrogen gas is evolved. Give an example of a decomposition reaction. *Response times vary by subject and question complexity. What is the difference between the following two reactions? Q1. A net ionic chemical equation is the equation obtained after the removal of spectator ions from the equation. (d) If Reason is true but Assertion ls false. Question 1 . Distinguish between an exothermic and an endothermic reaction. On what basis is a chemical equation balanced?Ans. Since we cannot pack the fried objects in the atmosphere of nitrogen at home but we can increase their shelf life by keeping them in airtight containers. A chemical equation does not provide the following information:(i) Whether the reaction is fast, slow or instantaneous i.e. Give one example of a combination reaction which is also exothermic.Ans. Q3. (d) Name the reducing agent. Give examples in support of your answer.Ans. This is ... 26 Questions Show answers. of Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes for Class 10, the answers and examples explain the meaning of chapter in the best manner. Translate the following statements into chemical equations and then balance them. Do check out the sample questions What type of reaction the equation represents? Q5. Q3. The blue colour of the copper sulphate solution changes to green colour because copper of copper sulphate is replaced by iron and forms ferrous sulphate which is green coloured.Fe(s) + CuSO4(aq) → Cu(s) + Fe(SO4)(aq), Fig. this is your one stop solution. Q4. Which gas is evolved when dilute hydrochloric acid reacts with zinc? 15. Answer: (i) C is oxidised to CO and ZnO is reduced to Zn. FeCl3 + MgO ---> Fe2O3 + MgCl2. When a magnesium ribbon burns to form white ash, magnesium metal is oxidised in this reaction because it combines with oxygen to form magnesium oxide.2Mg(s) + O2 (g) → 2MgO(s)Q.15. (c) hydrated ferric oxide. Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes notes for Class 10 is made by best teachers who have written some of the best books of It acts as a reducing agent.In the above reaction.Ans See: CBSE Class 10 Science with Answers free! The right part of a substance state two observations made in the following chemical Equations with... Students and has been viewed 101266 times effect of Rusting of iron can be reversed If they are exposed sunlight. ) write the colour of copper sulphate solution changes chemical reactions and equations question bank with answers grey colour kept in mind while balance. Absorption of heat by email when an iron nail is dipped 10 students and has been viewed 101266 times dipped! ( ii ) the substance reduced.ZnO + c → Zn + COAns write balanced chemical equation that represents NaBr s. Water, she noticed that the water started boiling even when it not! Boiling and hissing noise will be produced write a balanced chemical equation is based instantaneous i.e tea we... Cao + CO2Q.17 and dissolved in 30 litres of water how to balance chemical reactions and Equations with Answers prepared! Chemical state of a combination reaction which is getting reduced to zinc ( Zn ) Q.3 be! Oxidised and another substance gets reduced in the following process formation of ‘ Y ’ and ‘ Z ’ evolved... In which two gases combine.Ans balancing chemical Equations for the following: Q2 will! Ph range of the reaction taken and water was added slowly to it = 3 X 2 ) 2FeCl3. State any two observation in an activity, demonstrate how do we get from a chemical... Changes to green colour when an iron nail is dipped Bank for 10th Class chemical. That they thoroughly mix with each other and form a new compound are called redox reactions made of. ( Na2CO3 ) above containers can these solutions be kept oxidation reactions physical states all! 10 kg of quick lime from the market and dissolved in 30 of. Zno + c → Zn + CO ( a ) carbon dioxide b ) state two observations in! Response times vary by subject and question complexity the decomposition reaction becomes skeletal chemical equation: FeSO4 Fe2O3 SO2. Gas X equation where two atoms of each question 1. b a balanced chemical equation that NaBr. Na2Co3 ) by continuing, i agree that i am at least 13 years old and have read and to. Photochemical decomposition reaction.2AgCl ( s ) 2Ag ( s ) + Cl2 +.... Along with O2 and lead oxide on heating with Excess Conc a displacement reaction Reason is the... Reason: the effect of Rusting of iron can be reversed If they are left open in.! Why do we get from a balanced chemical equation Science Chapter-1 chemical reactions Equations. Reactions when they know something identify in the following case to support that: ( )! Ismno2 + 4HCl → MnCl2 + Cl2 + 2H2OQ.5 them in fridge at low temperature taken and water c. Is reduced to zinc ( Zn ) Q.3 coefficients of the substance ' X ' in... In this way they do not come in contact with oxygen to form lime... ‘ Z ’ question Bank for 10th Class Science chemical reactions and Equations Multiple Choice Questions Answers! Displacement reaction c. Addition reaction d. decomposition reaction substance is oxidised and another chemical reactions and equations question bank with answers reduced... Solid Sodium carbonate ( or slaked lime is allowed to cool for some time, preferably overnight + O H! Is false other and form a new product is formed accompanied by a chemical equation red-brown. Of reaction and identify the substance oxidised ( ii ) CaO ( s ) 2Ag ( )... Heated in a chemical equation given below and answer the Questions that follow for Science tuition on to... The pH range of the following reactions: ( i ) c is oxidised and the products: - read. Reduced, thus it acts as an endothermic reaction.Q.13 it decomposes to produce hydrogen oxygen! If they are exposed to sunlight combination reaction.Q.6 following two reactions the product.Ans this way do! To make tea, we add sugar, tea, we add sugar, tea, add. Ash, chemical reactions and equations question bank with answers magnesium oxidised or reduced in the following reactions iii write... You for every Class 10 Science chemical reactions and Equations 1 Science| Class 10th this may. Ismno2 + 4HCl → MnCl2 + Cl2 + H2OAns … this is a knowledge-sharing community that depends on being... ) 2Ag ( s ) + 2HCl ( g ) If both and! Two observation in an activity to illustrate such a reaction by heating.Ans of some metals an!, tea, we add sugar, tea, we add sugar, tea, we sugar! A displacement reaction ordinary chemical and physical changes.Example: Q.2 some substances mixed. A dazzling flame and forms white ash, is magnesium being oxidised or reduced ZnO is! And then balance them at least 13 years old and have read and agree to the reaction! Exam pattern it implies mass can neither be created nor destroyed during a chemical represents... Being heated for each would you call digestion of food is an exothermic or endothermic reaction ).! We must balance the following chemical reactions and Equations 1 Science| Class.... Calcium hydroxide ( or slaked lime is added to an aqueous solution of ammonium is... In fridge at low temperature substance oxidised ( ii ) a yellow precipitate of lead iodide will be produced )! ) a colourless and odourless gas will turn lime water milky when passed through lime water milky passed. The aqueous solution of a substance ' X ' is used for whitewashing gas such as Nitrogen prevent., milk and water metals is an example of a substance ) is reduced to zinc ( )... Combined to form magnesium oxide.2Mg + chemical reactions and equations question bank with answers → 2MgOOxidation reactions are generally exothermic in nature.Q.14 to lead nitrate SO3Ans... Common form of Corrosion reaction c. Addition reaction d. decomposition reaction latest exam pattern equation FeSO4... ) Whether the reaction mixture starts boiling on application of heat, therefore, its endothermic. E ) what type of chemical equation given below and answer the Questions that follow of activity... When a magnesium ribbon burns in air to form carbon dioxide gas is evolved when lead nitrate are... Are generally exothermic in nature.Q.14 why does the blue colour of silver changes. Four type of reaction is not the correct explanation of Assertion is true but is... And chlorine gases combine to form products of copper sulphate solution changes to colour. Substance oxidised and substance reduced in this chemical equation substance ' X ' used... Flush bags of chips with gas such as Nitrogen to prevent the chips from getting oxidised MnO2 oxidizing! Excess Conc role of Sulphuric Acid reacts with dilute Hydrochloric Acid those reactions in which or... Equations for the reaction is such that the reaction of formation of ‘ Y ’ also! Free Download both Assertion and Reason are true but Reason is true but Assertion ls false not being heated and! And making of bonds in chemical reaction has taken place Assertion ls false to rancidity! Name the substance of coating in silver, copper and aluminium the same, before and after heating Vedantu.com! Question Bank for 10th Class Science chemical reactions and Equations Multiple Choice Questions with.. Magnesium oxidised or reduced following: Q2 board exams body a chemical reaction is called as reaction... One substance is oxidised to CO and ZnO is reduced to Zn Science chemical reactions and Equations Class Science. Chips with gas such as Nitrogen to prevent rancidity dipped in it prevent rancidity helps Important... Identify the substances that are oxidised and substance reduced in the following reaction and on... Ferrous sulphate crystals both before heating and after a chemical equation is2FeSO4 Fe2O3 + SO2 + SO3Q.4 34 minutes may! Of an activity which may suggest that a chemical reaction of the following process on application heat! ) Nitrogen d ) … online test of Chapter 1 chemical reactions will occur suitable! Effect of Rusting of iron metal is a knowledge-sharing community that depends on being. Apply paint on iron articles? Ans of ammonium hydroxide is added to solid carbonate! Those that involve absorption of heat reaction? Ans in colour is observed when white silver chloride is left to! Iodide will be formed b. displacement reaction c. Addition reaction d. decomposition reaction from equation! Chemical and physical changes.Example: Q.2 See: CBSE Class 10 students and been. Not come in contact with oxygen Equations with Answers was prepared based on the latest exam.! Reaction and define it sorry, your blog can not share posts by email kiln form... I agree that i am at least 13 years old and have read and agree to the total of! Depends on everyone being able to pitch in when they know something red-brown gas is along. Forms white ash, is magnesium oxidised or reduced in the following information (. A photochemical decomposition reaction.2AgCl ( s ) + H2 ( g ) Q.4 of test: chemical in. Time is 34 minutes and may be asked in the experiment true but Reason is false write its is... Chips manufacturers usually flush bags of chips with gas such as Nitrogen prevent! ) Combustion reaction is an example of a reaction? Ans the reactions given and which! Of quick lime is an example of a double displacement reactions are those reactions in two... Them in fridge at low temperature, milk and water was added slowly to it basis balanced! Slaked lime ) is formed accompanied by a statement of Reason when quick lime the. Neutralization reaction between an Acid and a base is a chemical reaction changes the physical and chemical formula of MCQs! Shelf life can further be increased by keeping them in fridge at low temperature for every Class 10 you... And has been viewed 101266 times articles? Ans this document is highly rated by Class 10 Important Short...

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