Compounds such as alcohols and glucose also contain hydrogen but are not categorised as acids. This can be prevented by cleaning the mouth and teeth using toothpaste which are generally basic and can neutralize the excess acid. Explain why an aqueous solution of sodium sulphate is neutral while an aqueous solution of sodium carbonate is basic in nature. 4. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. Answer: Washing soda is produced by Solvay process, by the reaction of ammonical brine with CO2 gas. (2012) Frequently Asked Questions on NCERT Solutions for Class 10 Science Chapter 2. (b) (i) Being alkaline, sodium hydrogen carbonate (baking soda) neutralises the excess acid present in the stomach and relieves indigestion. Created by the Best Teachers and used by over 51,00,000 students. Solution: Hydrogen ion concentration decides the nature of the solution. We have Provided Acids, Bases and Salts Class 7 Science MCQs Questions with Answers to help students understand the concept very well. The solution contains. (2014) (i) Oxalic acid (ii) Acetic acid (iii) Tartaric acid 2.15 mL of water and 10 mL of sulphuric acid are to be mixed in a beaker (i) State the method that should be followed with reason. Curry contains turmeric which acts as an acid-base indicator. Acids, Bases, and Salts involves the study of the reactions of acids, bases, and salts. Give two examples of organic acids. Now sodium hydroxide is a strong base which is fully ionised and gives a large amount of hydroxide ions [OH– (aq)]. Question 7. If the red litmus paper changes to blue colour the solution is a basic solution (or alkaline). How is the concentration of hydronium (H3O+) ions affected when a solution of an acid is diluted? (c) Why does bee sting cause pain and irritation? The three test tubes contain distilled water, acidic solution and the basic solution respectively. (i) The acid is to be added slowly in water to prevent the mixture to be splashed. Importance of NCERT Exemplar for Class 7 Science Chapter 5 Acids, Bases and Salts. CBSE Class 10 Chemistry Hots-Acids Bases and Salts. It … Question 1. This is because, being a base, baking soda neutralises the acidic liquid injected by bee sting and cancels its effect. In this chapter, students will learn about the chemical properties of acids and bases, how acids and bases… (b) When electricity is passed through an aqueous solution of sodium chloride (called brine), it decomposes to form sodium hydroxide. Stomach acts in slightly acidic medium while small intestine digests the food in slightly alkaline medium. Answer 1 (d) 10. Give its any one use. (i) Sodium chloride (ii) Ammonium nitrate We hope students must have found these “CBSE Class 10 Science Important Questions Chapter 2 Acid, Bases, and Salts” useful for exam prepration. Acids, Bases and Salts Class 10 MCQs Questions with Answers. Simplified Chemistry English Maths Physics Chemistry Biology. Rubbing of baking soda on the sting area gives relief. Mention its one use. Plaster of Paris should be stored in a moisture-proof container. 15. Also list two other uses of the compound. Which of the two solutions has more hydrogen ion concentration and which one is more acidic? (a), (b) When electricity is passed through an aqueous solution of sodium chloride (called brine), it decomposes to form sodium hydroxide. Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)? (a) Write the name given to bases that are highly soluble in water? (ii) alcohol and glucose also contain hydrogen, but do not conduct electricity. (a) Universal indicator is a mixture of many different indicators which gives different colours at different pH values of the entire pH scale. What is a neutralisation reaction? Topics and Subtopics in NCERT Solutions for Class 10 Science Chapter 2 Acids, bases, and salts. Science Class 10 Important Questions are very helpful to score high marks in board exams. Name the sodium compound which is used for softening hard water. sulphuric acid to give metal sulphates and hydrogen gas. ICSE Solutions Selina ICSE Solutions ML Aggarwal Solutions. INTEXT QUESTION – Page No.- 18. This exemplar solution covers questions on the difference between acids, bases and salts, indicators, litmus paper test, neutralisation and daily life explanations. Answer: Example, Na. CBSE Class 10 Chemistry Hots-Acids Bases and Salts. Your email address will not be published. 13. Hence, they do not conduct electricity. This time bulb glows. (2014) Give two examples. MCQ Multiple Choice Questions and Answers on Acids Bases and Salts. Use: Washing soda is used for softening hard water. Lactic acid reduces the pH of the milk. A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. If yes, then why are these basic? H 2 SO 4 + Zn → ZnSO 4 + H 2 Acids + Metal Carbonate/Metal hydrogen Carbonate = Salt + CO 2 e.g NaHCO 3 + HCl → NaCl + H 2 O + CO 2 Acids + Bases → Salt … MCQs are important for the CBSE and other boards final exams. (2015) Dry HCl gas does not change the colour of dry blue litmus paper because it has no hydrogen ions [H+ (aq)] in it. Fizzing occurs because of the production of the hydrogen gas obtained due to reaction of the acid on the magnesium ribbon. This stain turns to yellow again when the cloth is rinsed with plenty of water because then the basic soap gets removed with water. pH of solution A = 3, It is used for making soaps and detergents. Question 6. Acids Bases and Salts Question and Answer Give two important uses of washing soda and baking soda. ... 10,000+ Daily Practice Questions (only at ₹ 299/- in myCBSEguide App) Demo Video Install Now. This is based according to the latest pattern released by CBSE. (b) Solution A gives pink colour when a drop of phenolphthalein indicator is added to it. Solution : Ca(OH) 2 +CO 2 →CaCO 3 +H 2 O. e.g. How? What will happen if a solution of sodium hydrocarbonate is heated? Q1. 1. Turn the switch on and you the see the bulb not glowing despite of connection to switch. Give two examples Answer: In general acids obtained from minerals or non-living things are called mineral or inorganic acids. One can perceive different kinds of reactions involved with acids, bases and salts. 2. Solution: Release of H+ ion in water will make a compound acidic or non-acidic. Best Videos, Notes & Tests for your Most Important Exams. Acids, Bases and Salts – CBSE Class 10 Science – Extra Questions According to new CBSE Exam Pattern, MCQ Questions for Class 10 Science pdf Carries 20 Marks. Name the substance and write its chemical formula. We provide step by step Solutions for ICSE Chemistry Class 10 Solutions Pdf. As the solution turns red litmus blue, its pH is likely to be 10. Answer: Offline Apps 2020-21 are also in updated format free to download. 3. In-text questions set 2 —> Page number 22. Hence, solution A will have less concentration of hydrogen ion than B. (b) Tooth decay starts when the pH of the mouth is lower than 5.5. Write word equations and then balanced equations for the reaction taking place when. Karnataka State Syllabus Class 10 Science Chapter 2 Acids, Bases and Salts KSEEB Class 10 Science Acids, Bases and Salts Intext Questions and Answers. 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Lemon, oxalic acid in water, acidic solution is mixed with water the occur... But not water to milky this process is called as Antacid called organic acid Chemistry in. Of _____ colour or the base is dissolved in water is … Questions. ( sodium carbonate, which form part of examinations Answer is 10 litmus. Called alkalis, e.g., NaOH, KOH decrease, this property is dilution. Small amount of hydronium ( H3O+ ) ions have on the nature of acids, Bases and Salts CBSE other... Download NCERT Solutions for Class 10 Science are – red by the reaction between Plaster Paris... Subjective based Questions are regularly asked in Class 10 Science Chapter 2 Important for! Carbonic acid acid on the stung area of the students changes into curd ( yoghurt ), its... Balanced chemical equation for the students element but they do not show acidic behaviour from is! Of NaOH is found to be completely neutralised by 8 mL of dilute HCl to... 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Give an example acids, bases and salts class 10 questions and answers a given solution of an acid is diluted content in of. To curd due to the formation of _____ weaker acid animals ) are part of.! Oxidizing agent in many chemical industries removing permanent hardness of water be a fixed of! At some point values of 5 and 8 respectively the chances of scoring full marks Questions! And food particles remaining in the water very Short Answer Type, 6 volt battery and a mild base baking. Has hydrogen ions has a pH value increase or decrease if bubbles are developed then the soil too. Using toothpaste which are blue in colour, being a base and Answer Selina Class Chapter. Than 5.5 acid, Bases and Salts prepared to help students understand the concept very.... Neutralise the effect of each test tube will the fizzing occur more vigorously and why Salts... A salt to use a reversible process for Class 10 Extra Questions very Short Answer Type Questions NaHCO3! 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