11 < 9 < 7 < 4 < 1 Give two important uses of washing soda and baking soda. Answer: Page 7 of 7. Question 14 Give the equation of the reaction involved. (d) KCl (d) Gas will not evolve in the case of IV set up as NaOH does not react with sodium carbonate. Why does an aqueous solution of acid conduct electricity? Therefore, the reaction between calcium carbonate and hydrochloric acid is. The aqueous solution of an acid conducts electricity due to the presence of charged particles called ions in it. Answer: Washing a car with it can remove dead bug bodies without damaging the paint. Now, since one of the compounds formed is calcium chloride, it shows that the metal compound is calcium carbonate. CBSE Class 10th Science Chapter Wise Questions Bank, Important Questions PDF. Write an equation to show the reaction between plaster of Paris and water. When electricity is passed through an aqueous solution of sodium chloride (called brine), it decomposes to form sodium hydroxide. (c) IV Bleaching powder. Used for making toys, material for decor action, smooth surfaces. → It includes materialistic and genetic heritage. An acid is a substance, which dissociates on dissolving in water to produce hydrogen ions [H+(aq) ions]. Question 3. [CCE 2014] Following substances are poured in all the four test tubes. Question 4 Answer: (c) B Name the substance that on treatment with chlorine yields bleaching powder. For example: sulphuric acid, hydrochloric acid, nitric acid, phosphoric acid. Sodium hydroxide solution is formed near the cathode. Acids, Bases and Salts . (d) An antacid [NCERT Exemplar] The contents of each test tube would be identified by change in colour of red litmus paper. It will also help you in Summative Assessment and Formative Assessment examination. Acetic acid (CH3COOH) is a weak acid whereas hydrochloric acid (HCl) is a strong acid. (a) CH3COOH The reaction will be vigorous with [CCE 2014] (a) Na2CO3 A drop of a liquid sample was put on the pH paper. You can get in touch with the support staff and have your queries answered to your utmost satisfaction. Answer: The concentration of hydroxide ions will increase when excess base is dissolved in a solution of sodium hydroxide, but it happens to a limited extent only after which the concentration becomes almost constant. Answer: Plaster of Paris should be stored in a moisture proof container. Class 10-Science & Technology-2-Chapter-1-Heredity and Evolution - Books. Solution: Question 23 Class 10 Science Chapter 2 MCQ with Answers The gas will burn with a pop sound confirming the presence of hydrogen gas. Class 10 science solutions are formulated by highly educated teachers after extensive research paper writer on the subject. And the presence of the hydrogen gas can be tested by bringing a burning splinter/ matchstick near the gas produced. Soon the reaction between zinc and hydrochloric acid starts and hydrogen gas is evolved. Though compounds like alcohol and glucose contain hydrogen but they do not ionise in the solution to produce H+ ions on passing current through them. Dilution of acid is an exothermic process. All organic acids i.e. Marble is calcium carbonate which reacts with the acid and thus gets corroded. Question 9 pH scale is a tool using which hydrogen ion concentration is measured. When a base is added to acid, both neutralize each other, in such reactions respective salts are formed along with water Oxides, hydroxides, and carbonates of all metals are base. Types of Indicator: There are many types of indicators. It is used to test garden soil for acidity. Question 4 We hope the given KSEEB SSLC Class 10 Science Solutions Chapter 2 Acids, Bases and Salts will help you. NCERT Solutions Class 10 Science Chapter 2: Acids, Bases and Salts. Some important topics involved in this chapter are: The common name of the compound CaOCl2 is bleaching powder. (iv) Weakly acidic? (c) When a base like NaOH is treated with any active metal like Zn, it produces H2 gas. Ammonium hydroxide is another important base, although it is the hydroxide of non-metal. Acid and metal carbonate or bicarbonate are kept in separate chambers in a fire extinguisher. (b) Strongly alkaline Metals and Non-metals Chapter 4. (c) dilute sulphuric acid reacts with aluminium powder Dry HCl gas does not give H+ ions and therefore does not change the colour of dry litmus paper. Give two examples. Study Material and Notes of Ch 2 Acids, Bases and Salts Class 10th Science. (d) hydrochloric acid This can be explained as follows: Rain water, while falling to the earth through the atmosphere, dissolves an acidic gas carbon dioxide from the air and forms carbonic acid (H2CO3). Download latest CBSE Class 10 Science Sample Paper2019: CBSE Class 10 Science Sample Papers 2019 PDF; Chapter-wise Science Notes for CBSE Class 10. Downlaod All Notes; Page 1 of 7. What will happen if a solution of sodium hydro carbonate is heated? pH scale works on the value from 0 to 14 (zero to fourteen). By taking online test of NCERT Class 10 Science Textbook, you will be able to have deep understanding of that chapter. Topics that are going to be covered are: Arrange the pH in increasing order of hydrogen-ion concentration. Why does distilled water not conduct electricity, whereas rainwater does ? Answer: CBSE Notes for Class 10 Science – Chapter wise PDF. XRumerTest on The Fight Summary Chapter 6 It so happened; Gunjan on Activity 2.7 NCERT Class 10 Science, Acids, Bases and Salts; Fardeen on Theorem 6.1 NCERT Class 10 Maths Chapter 6 Triangles; Jasmin on A Different Kind of School MCQ; Anonymous on Activity 3.9 NCERT Class 10 Science… Question 20 Why do HCl, HNO3, etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character? (b) HCl, Question 3 You go to school daily and learn new things. Caution: Always acid is slowly mixed in water to dilute the acid. NCERT Solutions for Class 10 Science (Chemistry) Chapter 2 Acids, bases, and salts are part of NCERT Solutions for Class 10 Science. NCERT Book for Class 10 Science Chapter 2 Acids, Bases and Salts is available for reading or download on this page. Do basic solutions also have H+(aq) ions? Which gas is usually liberated when an acid reacts with a metal ? NaOH + HCl → NaCl + H2O The compounds such as glucose and alcohol also contain hydrogen but they do not show acidic character. Click to see Urdu Notes online Math. (ii) Strongly alkaline? Two solutions X and Y were found to have pH value of 4 and 10 respectively. • Used in glass, soap & paper indusby, removing Permanent hardness of water and cleaning agent. Bleaching Powder (CaOCl2): What is a neutralisation reaction ? If you have any query regarding Rajasthan Board Books RBSE Class 10th Science Solutions Pdf vigyan, drop a comment below and we will get back to you at the earliest. Hydrochloric acid is important chemical product which is used in manufacturing of medicines, cosmetics and ammonium chloride and also used for cleaning steel. (d) Petri dish One of them contains distilled water and the other two contain an acidic solution and a basic solution respectively. The reaction of an acid and a base, giving rise to the corresponding salt and water is called neutralization reaction. (c) Common salt Answer: Hello this is our sample video for full video Please call on 9026272829. Also in this article, you will find the Step-wise explanation for each and every question. Indicators: Indicators are substances which indicate the acidic or basic nature of the solution by the colour change. (b) Vinegar NCERT Books Class 10 Science: The National Council of Educational Research and Training (NCERT) publishes Science textbooks for Class 10.The NCERT Class 10th Science textbooks are well known for it’s updated and thoroughly revised syllabus. The font text of Ncert Class 10th Science Book is very attractive and simple. Which gas is usually liberated when an acid reacts with a metal? Question 7 But these are far less in number than OH– ions that is responsible for their basic nature. Which of the following statements shows the property of an acid? In fact, dry HCl gas does not change the colour of dry litmus paper as it has no hydrogen ions [H+(aq) ions] in it. Uses of washing soda : Which solution has more hydrogen ion concentration? How do you think the pH will change as it turns into curd ? Which of the following would change the colour of this pH paper to greenish blue? Always add acid to water and not water to acid because this process is highly exothermic. CBSE Class 10 Science MCQs Chapter 2 Acids, Bases and Salts In CBSE Board Exam 2020, Class 10 Science question paper will have Multiple Choice Type Questions (MCQs) in Section A. (d) Both X and Y are bases Useful links : Main Page : - Maharashtra Board Class 10 Science & Technology Part-1,Part-2 - All chapters notes, solutions, videos, test, pdf. It is often used as an electrolyte. This is a half video chapter for class 10. Students who are in Class 10 or preparing for any exam which is based on Class 10 Science can refer NCERT Book for their preparation. Rainwater, while falling to the earth through the atmosphere, dissolves an acidic gas carbon dioxide from the air and forms carbonic acid (H2CO3). Question 3 While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid? NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. 10th Class Physical Science (Physics) Chapter wise Important bit bank Bits in English. Sodium Hydroxide (NaOH) Answer: The solution contains A student performed an experiment using zinc granules and sodium carbonate with sodium hydroxide and hydrochloric acid under different And we know that a basic solution turns pH paper blue. NCERT Books. (c) A burning splinter / matchstick The solution, which has no effect on any litmus paper, will be neutral and hence it will be distilled water. In totality it can be said that pH means power of an acid. Acid can be diluted by mixing of acid into water. If you have any query regarding Rajasthan Board RBSE Class 10 Science Solutions Chapter 2 Human System, drop a comment below and we will get back to you at the earliest. Class 10 Science Chapter 2 Notes of Acids, Bases and Salts. (a) Milk is made slightly alkaline so that it may not get sour easily due to the formation of lactic acid in it. (a) 1 Examples: Question 15 The acids will not show its acidic behaviour in the absence of water, this is because the acids produce hydrogen ions only in the presence of water. You have two solutions A and B. Question 1. (a) Antibiotic (iii) Strongly acidic? Fresh milk has a pH of 6. Never mix water into acid to dilute. NCERT Solutions For Class 10 Science Chapter 2 Acids And Bases:  In this article, we will provide you with NCERT Solutions For Class 10 Science Chapter 2 Acids And Bases. September 4, 2017 at 12:01 pm Reply . Answer: (b) Less than 5 Chapter Wise Multiple Choice Questions of 10th Class Social Science will help you test your knowledge regarding the Chapter. So, due to the presence of carbonic acid (which provides ions to rain water), the rain water conducts electricity. ISBN 9789390222292 from Oswaal Books. So, an antacid would change the colour of this pH paper to greenish blue. These 10th Science Notes are useful for UP Board Students also. (iv) Now pour alcohol in the beaker and switch on the current. For example Taj Mahal, which is made of marble, is getting damaged because of reaction with acid rain. How do you think the pH will change as it turns into curd? (iii) Connect the nails to the two terminals of a 6 volt battery through a bulb and a switch, as shown in the given Figure. Thus, by knowing the value of on pH scale strength of an acid or a base can be determined. All metal oxides, metal hydroxides, metal carbonates are base. 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Having proper knowledge of the theories, sufficient practice of the reactions, equations and formulas, and solving questions from the NCERT Chemistry books are very important if you want to score well in Science for Class 10 board exams as well as JEE and NEET. Answer: Page 3 of 7. These are the substances which indicate the acidic or basic nature of the solution by their colour change. The pH of solution A is 6 and pH of solution B is 8. (II) Anion: It carries (-) Negative charge on atom. The pH of a solution is inversely proportional to its hydrogen ion concentration. Acids produce hydrogen ions in water. Which solution has more hydrogen ion concentration? (d) 16 mL, Question 4 Question 13 Answer: Explain why? The salt is most likely to be Name the sodium compound which is used for softening hard water. Digital NCERT Books Class 10 History (India and the Contemporary World … Why do we use Metal Carbonate or Metal Bicarbonate in Fire Extinguisher? You can be successful in your life by getting a quality education. Answer: (c) 12 mL Distilled water does not conduct electricity because it does not contain any ionic compound (like acids, bases or salts) dissolved in it. fresh milk has a pH of 6. For example, when we wet the red litmus paper with the basic solution, it changes into blue colour. Question 6 Question 2 In which test-tube will fizzing occur more vigorously and why? Question 6 (b) Blue litmus solution Moreover, the Chapter-wise Class 10 Science Notes pdf are made with utmost precision by our panel of highly experienced teachers, strictly according to the NCERT Syllabus which ensures an all-around preparation for the board examination. Washing Soda (Na2CO3. (b) 8 mL During this period of reaction, when we place a burnt candle nearby gas it produces a pop sound. Answer: What effect does the concentration of H+(aq) ions have on the nature of the solution? A solution turns red litmus blue, its pH is likely to be (d) 16 mL Solution: Class 10 Science Chapter 2 Acids, Bases and Salts Notes - PDF Download. Solution: Student of UP Board and MP Board also take the benefits of these notes, as they are using NCERT for the new academic session 2020-21. When we react any metal with an acid the reaction gives corresponding salt and produces hydrogen gas. Periodic Classification of Elements (SA - 2) Chapter 6. Which one of the following would you need to identify the gas that evolve when you heat NaOH solution with zinc metal? You have been provided with three test tubes. Stuck At Home? (b) Strong adds like HCl react vigorously with active metals like Zn and form metal salt and evolve H2 gas. indicates no colour change. Solution: (a) I (i) Put the red litmus paper in all the test tubes, turn by turn. The fizzing is due to the evolution of hydrogen gas which is formed by the action of acid on the magnesium metal of magnesium ribbon. Chapter 1: Chemical Reactions; Chapter 2: Acids Bases and Salts; Chapter 3: Metals and Non-metals; Chapter 4: Carbon and its Compounds; Chapter 5: Periodic Classification of Elements ; Chapter 6: Life Processes; Chapter 7: Control and Coordination; Chapter 8: How do Organisms Reproduce? Thus, it has no effect on red litmus and acids are sour in taste. NCERT Solutions for Class 10 Science Chapter 2 Intext Questions. Therefore, alcohol and glucose do not show acidic character. 0 (zero) value on pH scale indicates highly acidic (strongest acid), 7 (seven) value on pH scale indicates the neutral solution, 14 (fourteen) value on pH scale indicates highly basic (strongest base), Strength of acid, i.e. i. Plaster of Paris should be stored in a moisture proof container because the presence of moisture can cause slow setting of plaster of Paris by bringing about its hydration. Thus, it will not affect the pH of the solution. 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And thus gets corroded Science ncert Solutions for Class 10 Science Solutions Chapter 2 Nationalism in India available! 10 Science Chapter 2 PDF contains Solutions to every question too is highly important bag. Different conditions 10th class science 2 chapter shown in the CBSE Class 10 Science Chapter 2 Notes for UP Board Board.! Scale strength of an acid conduct electricity, whereas rainwater does ; basic nature the! Water and cleaning agent the clear supernatant solution turns pH paper to form salt and hydrogen. Setting of plaster of Paris should be more than 5.5 a weak acid whereas hydrochloric acid to dilute the on! To Class 10 Science Chapter 2 Notes for Class 10 is a half Chapter! Grab this chance the aqueous solution are responsible for acidic character understanding and checking your knowledge regarding the Chapter is. Ch3Cooh ) is a time of Science and Technology Intext Questions Solutions of alcohols and glucose also contain hydrogen they.