Explain four different types of chemical reaction with suitable examples. But the case with oxygen is different as it makes food rancid by reacting it with food items. (ii) Pb (s) + CuCl2 (aq) → PbCl2 (aq) + Cu (s) Question 4. Students can solve NCERT Class 10 Science Chemical Reactions and Equations Multiple Choice Questions with Answers to know their preparation level … H2S + Cl2 → 2 HCl + S D) … (a) dilute sulphuric acid reacts with aluminium powder Thus packing oil and fatty foods with nitrogen and fatty foods will help to sustain the quality of the food for longer by removing the oxygen before packing. If you have any query regarding Karnataka SSLC Class 10 Science Solutions Chapter 1 Chemical Reactions and Equations, drop a comment below and we will get back to you at the earliest. (a) In electrolysis of water (H2O), the hydrogen goes to one test tube and oxygen goes to another. Answer: (2014) If the number of atoms on the reactant side is not equal to the number of atoms on the product side, then we can confirm that the equation is not balanced. (ii) This is a double displacement reaction. BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2 NaCl (aq). 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Answer: Question 3. Write the balanced chemical equation for this reaction and state (i) the substance oxidized and (ii) the substance reduced in the reaction. (c) SO2 + 2H2S → 3S + 2H2O (2015) Consider the example of combustion of magnesium metal. We hope the given KSEEB SSLC Class 10 Science Solutions Chapter 1 Chemical Reactions and Equations will help you. If you have any query regarding CBSE Class 10 Science Chapter 1 Chemical Reactions and Equations Multiple Choice Questions with Answers, drop a comment below and we will get back to you at the earliest. The deep blue colour of copper sulphate solution fades due to the formation of light green solution of iron sulphate. (i) Substance oxidized = H2 (Hydrogen gas) (i) Phosphorus burns in chlorine to form phosphorus pentachloride. Question 10. When silver bromide is exposed to light, it decomposes to form silver metal and bromine If the unbalanced chemical reaction is not given, use the components of the chemical reaction that are mentioned and write down the skeletal equation. (v) Quicklime reacts vigorously with water releasing large amount of heat. Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 3 (Chemical reactions and equations) include all questions with solution and detail explanation. Skeltal chemical equation are unbalanced. This arrow indicates that the substances written on the left hand side are combining to give the substances written on the right hand side in the equation. Question 1. The arrow sign (→) pointing towards the right hand side is put between the reactants and products. The best ways to excel in school exam as well as in JEE & NEET is to practice questions good questions , entrancei prepared question bank for class 10 students in chapter Chemical Reaction And Equation get Exercise-1 in this page Also See : CBSE Class 10 Science Syllabus 2019-2020 Session How do we balance a chemical equation? Now take note of how many atoms are on each side of the reaction of each element. When hydrogen gas is passed over heated copper (II) oxide, copper and steam are formed. Check out this page to learn further in detail: Balancing Chemical Equations, 6. Since water (H2O) consists of 2 parts of hydrogen and 1 part of oxygen, so, the volume of hydrogen gas (H2) collected over cathode (negative electrode) is double the volume of oxygen gas (O2) collected over anode (positive electrode). You are also provided with solutions of dil HCl, dil HNO3, ZnCl2 and H2O. CBSE Maths notes, CBSE physics notes, CBSE chemistry notes. Chemical equation will not tell if the final product would have color change or discoloration. (iii) Heating of limestone Rusting is the specific name given to the corrosion of iron. Name the substance oxidised and the substance reduced, and also identify the oxidising agent and reducing agents in the following reaction: Write the equation of the chemical reaction of formation of ‘Y’ and also write the role of Sulphuric Acid in the reaction. Oxidising agent = SO2 Why are oil and fat containing food items flushed with nitrogen? Here, the compound Calcium carbonate when heated breaks down into Calcium Oxide and Carbon Dioxide. (a) When calcium oxide and water combine to form a single product calcium hydroxide, a large amount of heat is also released. (v) Displacement reaction Dec 04, 2020 - Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes is made by best teachers of Class 10. Chemical Reactions and Equation. 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