Give the equation of the reaction involved. Also write chemical name of the products obtained. In this page, we are providing Acids, Bases and Salts Class 10 Extra Questions and Answers Science Chapter 2 pdf download. (ii) as a constituent of baking powder. For you to pass this quiz, you will need to have some knowledge when it comes to formulas of different acid salts and base and their properties. Name the sodium compound which is used for softening hard water. Write word equations and then balanced equations for the reaction taking place when. The solutions are completely based on the latest syllabus and guidelines of the CBSE board. Use: Plaster of Paris is used in hospitals for setting fractured bones in the right position to ensure correct healing. This process is called Chlor-alkali process because the products formed are chlorine and alkali NaOH. All exercise questions are solved & explained by expert teacher and as per ICSE board guidelines. A milkman adds a very small amount of baking soda to fresh milk. Given here is the complete explanation of the chapter, along with examples and all the exercises, Question and Answers … Salts can be acidic, basic or neutral. Q46(CBSE 2010): Tooth enamel is one of the hardest substance in our body. MCQs are important for the CBSE and other boards final exams. (i) … (d) Dilute hydrochloric acid reacts with iron filings. On the other hand, carbonic acid is a weak acid which is only slightly ionised and hence gives a small amount of hydrogen ions [H+ (aq)]. Solution: Curd and sour food substances contain acids; these acidic substances combine with metal. You have two solutions, A and B. (2015 ) To prepare well for the board exams, students should choose the perfect reference guide which helps them to grasp the concepts effortlessly. Give reason for your answer. sulphuric acid to give metal sulphates and hydrogen gas. Question 3. In text questions set 5 Page number – 34-35. Solution: When base is dissolved in sodium hydroxide solution its hydroxide ions increase but it will reach saturation at some point. You are given three test tubes. 3. Acid, base and salt class 10 includes topics such as How do Acids and Bases react with each other or metals, Reaction of acid with Hydrogen carbonates and Metallic oxides, Reaction of bases with oxides, etc. Test tube ‘B’ NaHCO3 (s) + HCl (aq) → NaCl (aq) + CO2 (g) + H2O (l). (a) 1 (b) 4 (c) 5 (d) 10. If bubbles are developed then the soil Is too acidic. Solution: We can identify the content in each of the test tubes using red litmus paper. Reactions occurring in the above activity: Like we individuals have certain kind of nature, … Practical based multiple choice questions and subjective based questions are regularly asked in previous year question papers. Acids, Bases and Salts Class 7 MCQs Questions with Answers. Acids are the substance which upon dissociating with water results in production of Hydrogen ions. 4. => dilute Hydrochloric Acid + Iron → Ferrous Chloride + Hydrogen Gas, => 6HCl(aq) + 3Fe(s) → 3FeCl2(aq) + 3H2(g), 6. Question 3. Question 2. What will happen if a solution of sodium hydrocarbonate is heated? Write the characteristics of acids by which we can identify acids. Rubbing a mild base like baking soda solution on the stung area of the skin gives relief. (ii) alcohol and glucose also contain hydrogen, but do not conduct electricity. Solution: (a) He shifted the pH of the fresh milk from 6 to slightly alkaline to prevent milk from getting sour due to production of lactic acid. If the red litmus paper changes to purple, then it indicates that the solution is near neutral (distilled water in this case). Answer: With our Class 10 Science Solutions, get to grasp the deeper knowledge of the chapters in a simple language. 14. 2. (a) What change would be observed in lime water? Answer: How do metal carbonates and metal hydrogen carbonates react with acids? Pass the gas produced in each case through lime water as shown in the figure. The hydrated salts lose water of crystallization when exposed to air, this property is called efflorescence. Karnataka State Syllabus Class 10 Science Chapter 2 Acids, Bases and Salts KSEEB Class 10 Science Acids, Bases and Salts Intext Questions and Answers. How will you test for a gas which is liberated when HCL reacts with an active metal? Here we have given NCERT Class 10 Science Notes Chapter 2 Acids Bases and Salts. (c) Washing soda is a basic salt because it is a salt of a strong base (NaOH) and weak acid (H2CO3) with pH value more than 7. Fresh milk has a pH of 6. CBSE Class 10 Science Notes Chapter 2 Acids Bases and Salts. Name the gas which is usually produced when dil. Answer: Answer: (i) Which solution contains solute molecules in addition to water molecules. The design of our Class 10 Science Solutions is well- organized. Question 3. Acids, Bases and Salts Class 10 Questions and Answers. The solution contains Write the chemical equation for the reaction involved. Question 1. Created by the Best Teachers and used by over 51,00,000 students. Class 10 Science Chapter 2 Extra Questions and Answers Acids Bases and Salts. It is used for removing permanent hardness of water. (i) as an antacid NaHCO3 on heating produces Na2CO3 (soda ash) which on recrystallisation produces washing soda. Question 1: Solution A is a strong acid, solution B is a weak acid, solution C is a strong alkali. Bacteria present in the mouth produce acids by the degradation of sugar and food particles remaining in the mouth after eating. Acids, Bases and Salts Class 10 Questions and Answers. 1. (2015) Acids Bases and Salts Extra Questions Very Short Answer Type. Register online for Science tuition on Vedantu.com to score more marks in CBSE board examination. (a) Dilute sulphuric acid reacts with zinc granules. Basic solution has a pH value more than 7. Answer: (ii) Solution A has more H+ ion concentration because higher the hydronium ion concentration, lower is the pH value. 2. (2017 D) INTEXT QUESTION – Page No.- 18. Describe an Activity to prove it. CBSE Class 10 Chemistry Hots-Acids Bases and Salts. NCERT Solutions for Chapter 2 Acids, Bases and Salts is helpful in last minute question and Answers which has been provided here. In-text questions set 1 —> Page number 18. Get all questions and answers of Acids Bases And Salts of CBSE Class 10 Chemistry on TopperLearning. CaCO 3. Also list two uses of Na2CO3.10H2O. Answer: Correct Option is : 1. What is this process called? They are sour in taste. Solving the Acids, Bases and Salts Multiple Choice Questions of Class 10 Science Chapter 2 MCQ can be of extreme help as you will be aware of all the concepts. (a), (b) When electricity is passed through an aqueous solution of sodium chloride (called brine), it decomposes to form sodium hydroxide. 4. 5. (a) The blue colour of crystals of a substance changed on heating in a closed test tube but the colour was regained after sometime on cooling. Aqueous solution of sodium sulphate gets hydrolysed to form sodium hydroxide and sulphuric acid which are strong base and strong acid respectively. (iii) Cone, of H3O+ ion is affected when a solution of an acid is diluted. NaHCO3 on heating produces Na2CO3 (Sodium carbonate, called soda ash) which on recrystallization produces washing soda. (b) Write name and chemical formula of two such compounds whose one formula unit is associated with 10 and 2 water molecules respectively. Which gas is usually liberated when an acid reacts with a metal? Free NCERT-Class 10-Science-Chapter-2-Acids, Bases and Salts- Online Exercise Solutions, Intext Solutions Videos,Test, PDF for download Ans1. If Hydrogen ion concentration increase then solution turn acidic and similarly if Hydrogen ion concentration decreases then solution turn basic. Higher Order Thinking Skills (HOTS) are part of the CBSE syllabus and form part of examinations. Name the reactant and the product and mention one use of the product. Plants require a specific pH range for their healthy growth. Free PDF download of Important Questions with Answers for CBSE Class 10 Science Chapter 2 – Acids, Bases and Salts prepared by expert Science teachers from latest edition of CBSE(NCERT) books only by CoolGyan to score more marks in CBSE board examination. (a) dilute sulphuric acid reacts with zinc granules: => dilute sulphuric acid + zinc → Zinc Sulphate + Hydrogen Gas. (b) The following salts are formed by the reaction of an acid with a base: Whereas rainwater has a lot, more compounds. When an acid solution is diluted with water then concentration of (H3O+) ions gets decreased. The reaction of metallic oxides with acids, The reaction of non – metallic oxide with base. Solution B will be basic in nature as its pH value is 8. Answer: The water molecules, which form part of the structure of a crystal, are called water of crystallization. (b) Write the balanced chemical equation of Chlor-alkali process. The solution contains Acids, Bases, and Salts involves the study of the reactions of acids, bases, and salts. Categories NCERT Sol. Give two examples of bases. Answer: Solution: As metal compound released is Calcium Chloride the gas evolved here is CO2. Use: Washing soda is used for softening hard water. Write its chemical name and formula. pH of solution A = 3, Rainwater has dissolved acidic gas such as carbon dioxide from the air and that forms carbonic acid. Answer: Illustrate with an example. Solution: In increasing order of hydrogen ion concentration: pH 11(B) -> pH 9(E) -> pH 7(A) -> pH 4(D) -> pH 1 (B). How will you test for the presence of this gas? The pH of solution A is 6 and pH of solution B is 8. Answer: (c) When a honey bee stings a person, it injects an acidic liquid into the skin which causes immense pain and irritation. Question 1. Solution: When an acid reacts with any metal, salt and hydrogen gas are formed. As the solution turns red litmus blue, its pH is likely to be 10. Name the substance and write its chemical formula. NCERT Extra Questions for Class 10 Science Chapter 2 Acids, Bases and Salts with Answers will help to score more marks in your CBSE Board Exams. Solution: Release of H+ ion in water will make a compound acidic or non-acidic. All the MCQs are taken from NCERT Textbooks issued for session 2020-2021. Why does dry HCl gas not change the colour of the dry litmus paper? Egg shells contains calcium carbonate, which on reaction with HCl liberates CO2 gas which turn lime water to milky. (2017 OD) We provide step by step Solutions for ICSE Chemistry Class 10 Solutions Pdf. Amount and concentration taken for both the acids are same. Acids : Acids is defined as the one which produces hydrogen ions in water. It is used in the manufacture of borax compound. (CBSE … 3. Acids, Bases and Salts Quiz Questions and Answers-Arshad Iqbal "Acids, Bases and Salts Quiz Questions and Answers" book is a part of the series "What is High School Chemistry & Problems Book" and this series includes a complete book 1 with all chapters, and with each main chapter from grade 10 high school chemistry course. BYJU’S is India’s top education technology company which believes in a modern learning approach. Acids Bases and Salts Question and Answer NCERT Solutions are given in English and Hindi Medium free to use. Question 2. If other two test tubes do not change the colour of blue litmus paper, it shows that one of them contains a base and the other contains distilled water. Access Answers of Science NCERT class 10 Chapter 2 – Acids Bases and Salts. Give equations of the reactions. Solution B: pH = 8 In-text questions set 2 —> Page number 22. Solution: When acid is added to water there will be a fixed amount of hydronium present in the fixed volume of solution. CaSO 4. The liquid in test tube C does not turn the colour of either blue litmus or red litmus thus is distilled water. Explain why? Write the significance of 10H2O. With examples. Compounds such as alcohols and glucose also contain hydrogen but are not categorised as acids. Produce [H+] in H 2 O; Sour taste; Turns blue litmus red; Acts as electrolyte in solution; Chemical Properties Of Acids Acids + Metal → Salt + H 2 e.g. Explain. 2. When it changes into curd (yoghurt), will its pH value increase or decrease? 8. (ii) Which solution has more H+ ion concentration? Fizzing occurs because of the production of the hydrogen gas obtained due to reaction of the acid on the magnesium ribbon. Acids Bases and Salts Trivia Questions and Answers PDF. The gas evolved extinguishes a burning candle. How? ... 10,000+ Daily Practice Questions (only at ₹ 299/- in myCBSEguide App) Demo Video Install Now. It … Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride. (a) Chemical name of washing soda: Sodium carbonate decahydrate Chemical formula of washing soda: Na2CO3.10H2O, (b) Washing soda is produced by Solvay process by the reaction of ammonical brine with CO2 gas (c) dilute sulphuric acid reacts with aluminium powder. The liquid in test tube A turns blue litmus to red. Question 6. (b) Dilute hydrochloric acid reacts with magnesium ribbon. Solution: Common name of CaOCl2 is bleaching powder. How do acids and bases react with metals? It can be used to test the garden soil for acidity. Take This Important Acid, Base, and Salt Test if you are looking for a way to test out just how much you know about them. CBSE Class 10 Chemistry Hots-Acids Bases and Salts. This reaction turns food to poison which damage people’s health. Thus, A will have pH more than 7 because pH value of. Answer: (2014) Q41: What are mineral acids? Solution: Basic solutions has H+ ions, but hydroxide ions present in basic solution are more in basic solution. They will not separate to become hydrogen ions, on dissolving in the water. Give two important uses of washing soda and baking soda. Acids, Bases and Salts Chapter Introduction. How would you verify it? Answer 1 (d) 10. Write an equation to show the reaction between Plaster of Paris and water. Name the substance which on treatment with chlorine yields bleaching powder. What do all acids and bases have in common? (2017 OD) These charged particles called as ions are the reason behind conductance of electricity in acid. Solution: Plaster of Paris should be stored in moisture-proof container because moisture can affect plaster of Paris by slowing down the setting of the plaster because of hydration. The solutions can be referred while answering the textbook questions to get a clear idea about the concepts which are important from the exam perspective. 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