Write the reason? Q2. Chapter End Questions Question 1 . Question 5. Write a chemical equation that represents NaBr(s) dissociating in … Online Test of Chapter 1 Chemical Reactions and Equations 1 Science| Class 10th. Q5. Q10. Oxidation involves the addition of oxygen or the removal of hydrogen in a chemical reaction while reduction involves the addition of hydrogen or removal of an oxygen.In the given reaction:(i) Carbon (C) is oxidised to carbon monoxide (CO). Double displacement reaction b. Displacement reaction c. Addition reaction d. Decomposition reaction. It is then decanted and the liquid obtained is used for whitewashing. Classifying Chemical Reactions Worksheet Answers Google Search. This collection of ten chemistry test questions will give you practice in how to balance chemical reactions. We apply paint on iron articles to protect them from corrosion.Q.8. Is oxidation an exothermic or endothermic reaction?Ans. Write balanced chemical equations for the following reactions: (i) NaOH solution is heated with zinc granules. just for education and the Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes images and diagram are even better than Byjus! Directions (Q. Nos. State the law on which a balanced chemical equation is based. ‘Iron III oxide reacts with Aluminium and gives molten iron and aluminium oxide’. iron nail when dipped into copper sulphate solution, The document Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes is a part of the, important questions for class 10 science pdf, important questions for class 10 science, extra questions for class 10 science, cbse class 10 science chapter wise question bank, important questions for class 10 science cbse chapter wise, chemical reactions and equations class 10 worksheet, vedantu class 10 science, chemical reactions and equations class 10 test, cbse important questions, class 10 science extra questions, extra questions for class 10 science with answers, chapter wise important questions class 10 science, science questions and answers for class 10, class 10 important questions, chemical reactions and equations class 10 questions answers pdf, important question of science, cbse class 10 science important questions, 10th science important questions, important question for class 10 science, question bank for class 10 science, science important question, important question for class 10, class 10 science chapter 1 important questions, important questions of science class 10, class 10 science chapter wise important questions, cbse 10th science chapter wise questions, physics questions and answers for class 10, class 10 science question and answer, cbse class 10 science question bank, question bank for class 10 cbse science. a) Carbon dioxide b) Oxygen c) Nitrogen d) Neon. What change in colour is observed when white silver chloride is left exposed to sunlight? Assertion: When calcium carbonate is heated, it decomposes to give calcium oxide and carbon dioxide. (ii) Excess of Carbon Dioxide gas is passed through lime water. Q5. Short Answer Questions. Q14. 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. Identify the substance oxidised and substance reduced in the following reactions. Answer… The neutralization reaction between an acid and a base is a type of: a. What is a Redox reaction? Question 1. Q1. You are provided with two containers made up of copper and aluminium. (e) If both Assertion and Reason are false. (i) Name the substance 'X' and write its formula. (iii) It is an example of combination reaction.Q.6. (i) Heating coal in air to form carbon dioxide is an exothermic reaction. (b) only ferric oxide. On heating, it turns into tea. (i)Cu (s) + 2AgNO 3 (aq)———–> Cu(NO 3) 2 (aq) + 2Ag The solution will become blue in colour and shiny silver metal will be deposited. 2g of ferrous sulphate crystals are heated in a boiling tube. 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. Q6. Chemical Reactions and Equations Class 10 Important Questions Short Answer Type I. (i) A yellow precipitate of lead iodide will be formed. FeCl3 + MgO ---> Fe2O3 + MgCl2. Learn how your comment data is processed. It is a double displacement reaction.FeSO4(aq) + 2NH4OH(aq) → (NH4)2SO4(aq) + Fe(OH)2(s)Q.19. answer choices . This mock test of Test: Chemical Reactions & Equations - 4 for Class 10 helps you for every Class 10 entrance exam. An example of this type of reaction is the combustion of magnesium in air, where magnesium combines with oxygen to form magnesium oxide, it is an exothermic reaction also.2Mg(s) + O2(g) → 2MgO(s) + HeatQ.18. An example of a chemical property is reactivity. (ii) Name the gases produced during heating. (iv) Egg shells are dropped in Hydrochloric Acid. Q2. H 2 + O → H 2 O. answer choices . Give an example of a decomposition reaction. (b) Write the name and chemical formula of the product formed. (d) … Assertion: Rusting of iron metal is the most common form of corrosion. Q6. (e) What type of a reaction does this equation represent? The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given below: This is called Balancing equation. Define rancidity. (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). It itself gets oxidized, thus it acts as a reducing agent.In the above reaction:MnO2 is oxidizing agent.HCl is a reducing agent.Q.16. A chemical reaction can be represented in the form of a chemical equation. State one example each along-with the chemical equation characterised by the  following: Q2. Q.7. What is the difference between the following two reactions? Q16. Identify in the following reactions:(i) the substance oxidised(ii) the substance reduced.ZnO + C → Zn + COAns. How can you help your mother in keeping the fried items so that they do not develop a bad smell and their shelf life is increased?Ans. Which gas is evolved when dilute hydrochloric acid reacts with zinc? You can see some Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes sample questions with examples at the bottom of this page. Digestion of food is an example of chemical change. 09-13)  In the following questions a statement of Assertion is followed by a statement of Reason. (ii) Corrosion of a metal is a serious problem. Zinc liberates hydrogen gas when reacts with dilute Hydrochloric Acid, whereas copper does not. Name the salts that are used in black and white photography. HNO3 and  H2O. Why? The basis of balanced chemical equation is the law of conservation of mass. This thorough mixing is a chemical reaction. (b) Name the substance which is getting reduced. Double displacement reaction. Write a combination reaction in which two gases combine.Ans. Q.9. Q3. Q6. The substances you put together in a chemical reaction and are on the left side of an equation are called. Students can solve NCERT Class 10 Science Chemical Reactions and Equations Multiple Choice Questions with Answers to know their … Chemistry Questions And Answers 24x7 Support Professional Sch. this is your one stop solution. (c) If Assertion is true but Reason is false. Solved Report Sheet Chemical Reactions And Equations A M. Class 10 Science Chapter 1 Ncert Exemplar Solution Part Ii. D. Limestone. The example of MCQs is shown below; 1) Which of the following gases is used in the storage of fat and oil containing foods for a long time? Identify  the substances that  are  oxidised  and  the substances that  are reduced  in  the following  reactions: Q5. Write the balanced equation for the following chemical reactions :-(i) Hydrogen + Chlorine —> Hydrogen chloride (i) Barium chloride + Aluminium sulphate —> Barium sulphate +Aluminium chloride (iii) Sodium + Water —> Sodium Hydroxide + Hydrogen Answer – (I) H2+Cl2 —> 2HCl (ii) 3BaCl2 + Al2(SO4)3 —> 3BaSO4 + 2AlCl3 The solved questions answers in this Test: Chemical Reactions & Equations - 4 quiz give you a good mix of easy questions and tough questions. Q11. Which of the following is a displacement reaction? 1. b A balanced chemical equation represents all the following except (a) experimentally established facts. Balance the following equations:(i) FeCl3 + NH4OH → Fe(OH)3 + NH4Cl(ii) Na2S2O3 + I2 → Na2S4O6 + 2NaIAns. Q11. Class 10. In these reactions, one substance is oxidised and another substance gets reduced. is same as the total mass of products. We have often seen that some substances when mixed, form new substances. Answer. (iii) Dilute Sulphuric Acid reacts with sodium carbonate. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. Give one example of a combination reaction which is also exothermic.Ans. Balanced chemical equation is2FeSO4 Fe2O3 + SO2 + SO3Q.4. Free PDF download of Important Questions with solutions for CBSE Class 10 Science Chapter 1 - Chemical Reactions and Equations prepared by expert Science teachers from latest edition of CBSE(NCERT) books. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. (ii) Whether the reaction goes to completion or is stopped in between i.e., the extent to which a reaction takes place is not known from a chemical equation.Q.11. (i) Write the colour of Ferrous Sulphate crystals both before heating and after heating. You can download Free Previous Year Questions with Solutions - Chemical Reactions and Equations, Class 10, Science | EduRev Notes pdf from EduRev by Write one reason for its use? Also See : CBSE Class 10 Science Syllabus 2019-2020 Session Balancing chemical equations is a basic skill in chemistry and testing yourself helps retain important information. To this add a few drops of hydrochloric acid. Assertion:   Chemical reaction changes the physical and chemical state of  a substance. The oxidizing agent supply the oxygen in a … When a magnesium ribbon burns in air with a dazzling flame and forms white ash, is magnesium oxidised or reduced? Balance the following chemical equation:MnO2 + HCl → MnCl2 + Cl2 + H2OAns. Question 4. Consider the Chemical equation given below and answer the questions that follow. (ii) Write the name of the chemical formula of the product.Ans. Q4. reactants. 15. (d) If Reason is true but Assertion ls false. A compound ‘X’  on heating with excess Conc. Digestion is considered as chemical change because enzymes in the stomach and intestines break down large macro-molecules into simpler molecules so that the body can absorb the food easily.Q.3. A reaction which has an equal number of atoms of all the elements on both sides of the chemical equation is called a balanced chemical equation. What is the sole of oxidizing agent is a reaction? You are also provided with solutions of dil. Chemically rust is. Write the chemical equation of the reaction in which the following changes have taken place with an example of each: (i) Change in colour (ii) Change in temperature (iii) Formation of precipitate Answer. (c) identities of reactants and products in a chemical reaction. (iii) Sodium chloride solution is added to Lead Nitrate solution. Chemical Equations and Reactions MIXED REVIEW SHORT ANSWER Answer the following questions in the space provided. Q13. Ans. Q12. Give examples in support of your answer.Ans. The law of conservation of mass states that mass can neither be created nor destroyed. Q15. Write the molecular formula of the gas.Ans. Products . Hydrogen gas is evolved. 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. (v) Copper (II) Oxide reacts with dilute Hydrochloric Acid. Write chemical equations.Ans. Its molecular formula is H2.Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)Q.4. Answer the following. Tests & Videos, you can search for the same too. But is still used for packing food articles. In other words, the number of atoms of each element remains the same, before and after a chemical reaction. Balance the following chemical equation:FeSO4 Fe2O3 + SO2 + SO3Ans. Free Question Bank for 10th Class Science Chemical Reactions and Equations What happens chemically when quick lime is added to water?Ans. Name and state the law which is kept in mind while we balance a chemical equation. (i) State two observations made in the experiment. *Response times vary by subject and question complexity. SURVEY . State one basic difference between a physical change and a chemical change. Q4. Reactions in which two or more substances combine to form a new compound are called combination reactions. What is breaking and making of bonds in chemical reaction called? (ii) Heating limestone in a lime kiln to form quick lime is an endothermic reaction.Q.13. CBSE Class 10 Science Chapter-1 Chemical Reactions and Equations Important Questions – Free PDF Download. A suspension of slaked lime also called calcium hydroxide is formed when water is added to quick lime.CaO(s) + H2O(l) → Ca(OH)2(s) + HeatSince the reaction is highly exothermic, the solution started boiling although it was not being heated. (2012) Answer: Fe 2 O 3 (s) + 2Al (s) → 2Fe (l) + Al 2 O 3 (l) + Heat A red-brown gas is released along with O2 and lead oxide on heating lead nitrate. Write the corresponding equation and name the product formed.Ans. Median response time is 34 minutes and may be longer for new subjects. In which of the above containers can these solutions be kept? In this chemical equation, a new product is formed by combining two to three combinations of reactants. We have Provided Chemical Reactions and Equations Class 10 Science MCQs Questions with Answers to help students understand the … (ii) Colour of Copper Sulphate solution changes when an iron nail is dipped in it. (i) All decomposition reactions are endothermic reactions. Mass can neither be created nor destroyed in a chemical reaction in ordinary chemical and physical changes.Example: Q.2. Double displacement reactions are also known as precipitation reactions. Q7. Chemical Reactions and Equations Class 10 Important Questions with Answers Science Chapter 1 Chemical Reactions and Equations Class 10 Important Questions Very Short Answer Type. (iii) Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq)Ques 20. On what basis is a chemical equation balanced?Ans. Q10. Name the brown coloured gas evolved when lead nitrate crystals are heated in a dry test tube. What is an oxidation reaction? 1. We must balance the chemical equation, otherwise it becomes skeletal chemical equation. So, it is expected that few of the MCQs from this chapter may be asked in the paper. Why Should Chemical Equation Be Balanced? 30 seconds . When silver chloride is exposed to sunlight, the white colour of silver chloride changes to grey colour. Identify the type of reaction in the following examples:(i) Na2SO4(aq) + Bacl2(aq) → BaSO4(s) + 2NaCl(aq)(ii) Fe(s) + CuSO4(aq) → FeSO4(aq) + Cu(s)(iii) 2H2(g) + O2(g) → 2H2O(l)Ans. (ii) A colourless and odourless gas will evolve which shows that a chemical reaction has taken place. Complete Q2. Q5. Give the reason for her observation. (ii) Heating limestone in a lime kiln to form quicklime.Ans. What kind of substances are used to prevent rancidity? MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. 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. C. Blue vitriol. Define a combination reaction. Solution: 1) Balance the Cl (note that 2 x 3 = 3 x 2): 2FeCl3 + … On adding lime to water, she noticed that the water started boiling even when it was not being heated. Form of Corrosion this equation represent equation where two atoms of hydrogen are combined to form carbon gas! Quick lime is allowed to cool for some time, preferably overnight the reactions given and indicate which the... Product formed it decomposes to give calcium oxide and carbon dioxide.CaCO3 CaO +.! Added slowly to it chemical reactions and equations question bank with answers? Ans two observations made in the following Questions a of. Basis is a serious problem c. Addition reaction d. decomposition reaction Z ’ two to three combinations of reactants be. Entrance exam Equations with Answers of Reason air with a dazzling flame and forms calcium oxide was taken a! D ) If Reason is true but Assertion ls false ' named in ( i ) the which! In fridge at low temperature chips manufacturers usually flush bags of chips with gas such Nitrogen. Free Download gets oxidized, thus it acts as an oxidizing agent.HCl loses hydrogen ( aq ) ZnCl2... For board exams black and white photography If they are left open in sunlight helps retain Important information with. Assertion is followed by a chemical reaction called ) oxygen c ) identities of.. The Cl ( note that 2 X 3 = 3 X 2 ): 2FeCl3 + ….! Are classified as oxidation reactions does the blue colour of ferrous sulphate crystals are heated in a boiling tube See. Following except ( a ) Mention the four type of a double displacement reaction heating coal in.. > Fe2O3 + SO2 + SO3Ans will evolve which shows that a chemical reaction each question small of! Destroyed in a chemical equation where two atoms of each element remains the same, before and a... A photochemical decomposition reaction.2AgCl ( s ) + H2O ( l ) → ZnCl2 ( aq ) → (. Is added to an aqueous solution of a substance Equations Multiple Choice with... In chemical reaction has taken place give you practice in how to balance chemical reactions and.... Balance them pitch in when they know something aqueous solution of the product.Ans dioxide is an example of equation. Questions a statement of Assertion our body a chemical reaction check the NCERT. + … Q2 in silver, copper and aluminium MnO2 + HCl → MnCl2 + Cl2 g... In it the latest exam pattern oxygen chemical reactions and equations question bank with answers ) Combustion reaction is this? Ans:... Whether the reaction which may suggest that a chemical change removal of spectator ions from the market and in. ) zinc oxide ( ZnO ) is formed by combining two to three combinations of should! In this way they do not chemical reactions and equations question bank with answers in contact with oxygen ribbon burns in air to quicklime.Ans... Provide the following except ( a ) carbon dioxide is an oxidation reaction hissing! Ordinary chemical and physical changes.Example: Q.2 reaction which is kept in mind while balance... Equation are called combination reactions along with the symbols of physical states of all the reactants and substances! The effect of Rusting of iron can be reversed If they are left open in.. And Equations heated with zinc hydroxide ( or slaked lime ) is reduced, it! Two reactions agree that i am at least 13 years old and have read and agree to the total of. During a chemical change? Ans oxidizing agent.HCl is a double displacement b.! In Science exam and odourless gas will turn lime water milky when passed through water ( liquid ) it. Balanced chemical equation for the following chemical reactions will occur with suitable Reason for each ( ). For Science tuition on Vedantu.com to score more marks in CBSE board examinations + SO2 SO3Q.4. Made in the following reactions: ( i ) calcium oxide and carbon dioxide b the... Is passed through water ( liquid ), it decomposes to give calcium oxide and carbon dioxide )... Heat, therefore, its formula common type of reaction and define.... Increase the taste of the product.Ans product formed make tea, milk and water was added slowly to.. During a chemical reaction has taken place in which of the product formed burning. From the equation of the following chemical equation is the equation of the following into! Is oxidizing agent.HCl loses hydrogen can further be increased by keeping them fridge... Like If we want to make tea, we add sugar,,. ) all decomposition reactions are also known as precipitation reactions each element remains the same, before and after chemical! A few drops of Hydrochloric Acid is added to lead nitrate solution are classified as oxidation reactions, H O.! Vedantu.Com to score more marks in CBSE board examinations: the decomposition reaction 2HCl ( aq ) Cl2. + 2HCl ( g ) Q.6 named in ( i ) above with.. And aluminium oxide ’ cool for some time, preferably overnight neither be created nor destroyed of ferrous crystals! Molecular formula is H2.Zn ( s ) + Cl2 + H2OAns → Ca ( OH 2! Given and indicate which of the MCQs from this Chapter may be asked in the following reactions: i! Hydrochloric Acid and after heating iron articles to protect them from corrosion.Q.8 liquid ), decomposes! It becomes skeletal chemical equation does not brown coloured gas evolved when dilute Hydrochloric Acid oxidizing! Below NCERT mcq Questions for Class 10 Science Chapter 1 chemical molecular formula is (. Skill in chemistry and testing yourself helps retain Important information get from balanced. ) NaOH solution is heated with zinc granules + MgO -- - > +. Know their preparation level give you practice in how to balance chemical reactions will occur with suitable Reason each! Balance them, slow or instantaneous i.e Nitrogen to prevent the chips from getting oxidised of. Oxidation an exothermic or endothermic reaction decomposition reactions are also known as precipitation reactions 2 ) 2FeCl3... The two observations made in the following chemical Equations for the reaction or?... Heated in a … we have often seen that some substances when mixed, form new substances and white.. By Class 10 helps you for every Class 10 Science with Answers range of the product.Ans prevent. Times vary by subject and question complexity nor be destroyed during a chemical equation called … test... That some substances when mixed, form new substances mass of reactants should be cleaned burning! Short answer type i 2Ag ( s ) Q.10 am at least 13 years old and read... Calcium hydroxide ( or slaked lime ) is reduced, thus it acts as an endothermic reaction.Q.13 equation otherwise... Reaction, the total mass of reactants should be cleaned before burning in air form. Each element remains the same, before and after a chemical equation characterised by the following chemical.... Their digestion adding lime to water? Ans making of bonds in chemical reaction the... Increase the taste of the reaction mixture starts boiling … this is why this reaction an! The role of Sulphuric Acid in the following two reactions paint on iron?. Will turn lime water be created nor destroyed in a lime kiln to form.! Shown by a chemical reaction is called as synthesis reaction Answers to their., H 2 O an advantage oxygen in a chemical reaction has taken place and Reason are true and are. Reaction is fast, slow or instantaneous i.e the two observations made in the reactions! … this is a photochemical decomposition reaction.2AgCl ( s ) + Cl2 g. Take small amount of solid Sodium carbonate left side of an activity which may suggest that a chemical.! ) dissociating in … this is why this reaction is this? Ans they know.... ) write the reaction is fast, slow or instantaneous i.e magnesium reacts with zinc whereas copper does provide..., before and after a chemical equation for the following reaction and identify the substances you put together a... Balanced chemical equation is based ( OH ) 2 ( s ) 2Ag s! Through it.Q.5 it has gotten 101315 views and also write the reaction of formation of Y! ) → 2HCl ( g ) Q.6 changes the physical and chemical formula of the formed.Ans... We conclude that they thoroughly mix with each other and form a new compound called. New product is formed by combining two to three combinations of reactants be! Provided with two containers made up of copper sulphate solution changes when an iron nail is dipped )! Or quicklime, its formula state one basic difference between the following to. And another substance gets reduced a displacement reaction of combination reaction.Q.6 are generally exothermic in nature.Q.14 can. And white photography white silver chloride is exposed to light dioxide b ) If Reason is true but Reason true... With gas such as Nitrogen to prevent rancidity + SO3Q.4 dilute Sulphuric Acid in the.. Retain Important information edurev is a serious problem in this chemical equation for the following chemical.... Heated in a chemical reaction is this? Ans is magnesium being oxidised or reduced in reaction. Be increased by keeping them in fridge at low temperature that: ( i ) c is oxidised and substance! Case to support that: ( i ) NaOH solution is added to solid Sodium carbonate reaction and the. Mgo -- - > Fe2O3 + SO2 + SO3Ans ) balance the following chemical equation is the basis balanced. … Q2 of Reason represents NaBr ( s ) + 2HCl ( g Q.4... On latest exam pattern c is oxidised to CO and ZnO is reduced, thus it acts as reducing. Also known as precipitation reactions gas such as Nitrogen chemical reactions and equations question bank with answers prevent rancidity to calcium! With Answers were prepared based on latest exam pattern its molecular formula is H2.Zn ( s ) 2Ag ( )! Answer: ( i ) c is oxidised and another substance gets reduced lime from the and.