litmus solution…………. Water of crystallisation (b) 100°C CBSE Class 10 Science Book Chapter 2 “Acids, Bases and Salts” Multiple Choice Questions ‌(MCQs) with Answers. Here, you will find important MCQs from CBSE Class 10 Science Chapter 2 Acids, Bases, and Salts along with the answers. (c) aqueous solution of sodium chloride (b) Sodium zincate and hydrogen gas Sodium chloride is a salt of... [A] a weak acid and a weak base [B] a strong acid and a strong base [C] a weak acid and a strong base [D] a strong acid and a weak base; Which of the following is a salt of a strong acid and a strong base? (a) 90°C 1. (d) Oxalic acid, Question 7. Class 10 Chemistry Chapter 2 Important Questions with Answers Acids, Bases and Salts. 3. (a) aqueous solution of sodium hydroxide Mixing an acid or base with water results in decrease in the concentration of per unit volume. (d) Tartaric acid, Question 17. These MCQ Questions on Acids, Bases and Salts Class 10 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Brine is an (a) absorb the evolved gas Sodium carbonate is a basic salt because it is a salt of a (d) (ii) and (iv), Question 2. Acids, Bases and Salts Class 10 Important Questions Very Short Answer Type. 8. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. (a) weak base 5. 10H2O. (c) baking soda (a) Water < Acetic acid < Hydrochloric acid Assertion: Universal indicator gives green colour with distilled water. 21. (b) bluish-green MCQ Questions for Class 10 Science: Ch 2 Acids, Bases and Salts Free PDF Download of CBSE Class 10 Science Chapter 2 Acids Bases and Salts Multiple Choice Questions with Answers. Explaination: Reason: Zn + 2NaOH → Ma2Zn02 (Sodium Zincate) + H2, Question 6. Sodium carbonate is a basic salt because it is a salt of a (d) pH is above 7, 20. We know that acids react with bases to form salt and water. 8. 3. (c) calcium oxide Potassium nitrate has pH value equal to …………. Chemical formula of washing soda is 10. Answer: Metallic oxides are basic in nature. …………. (iv) Bulb will not glow because it depends upon the type of electrolytic solution. is one of the raw materials for the production of baking soda. (a) (i) and (iii) (a) pink (d) in alkaline batteries, 24. How many water molecules does hydrated cal-cium sulphate contain? (c) pH falls below 5.6 January 2, 2020 by rajathe MCQ Questions for Class 10 Science Acids, Bases, and Salts with Answers: Students CBSE Board Exams 2020 Time Table is out now. (in) Temperature of the solution remains the same Which one of the following salts does not con-tain water of crystallisation? (b) weak acid (a) white (d) Hydrochloric acid, Question 22. (b) baking powder Sodium hydroxide is a (i) Oxalic acid … Class 10 Chemistry Chapter 2 Important Questions with Answers Acids, Bases and Salts. Ch2 - Acids, Bases and Salts (MCQs) 7. Sodium hydroxide is used 10. 02 Chapter Name : Acids, Bases and Salts Total MCQ from Text Book : 69 Book Version : New book Printed in 2018 Printed By : Punjab Text Book Board Approved By : Govt of the Punjab and Federal Ministry for Education Test Type : MCQ / Fill in the Blanks / Short Answers Board : All Punjab Board Class : 10th (Matriculation) Total Marks : 69 Total Time : 69 … Ch 1 - Chemical Reaction (Assertion Type Reasoning Quiz) 5. (d) orange, Question 25. than 7. If you have any query regarding CBSE Class 10 Science Chapter 2 Acids, Bases, and Salts Multiple Choice Questions with Answers, drop a comment below and we will get back to you at the earliest. We have Provided Acids, Bases and Salts Class 10 Science MCQs Questions with Answers to help students understand the concept very well. B. Hydrochloric acid. (c) 7 Class 7 Science Chapter 5 MCQ (Multiple Choice Questions) of Acids, Bases and Salts. 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(d) absorb Cl– ions from the evolved gas. Question 14. 2. more/greater The pre foundation courses offered by us are prepared by best faculties from all over India. (ii) Bulb will glow because HCl is a strong acid and furnishes ions for conduction. Check the below NCERT MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts with Answers Pdf free download. Question 1. (c) colourless (d) washing soda, Question 16. 12. H+ MCQ Questions for Class 10 Science Acids, Bases, and Salts with Answers: Students CBSE Board Exams 2020 Time Table is out now. CaSO4, Cl2, H2O Stronger the base, higher is the pH. Answer: c (d) 7.2 – 8.4, 19. (c) (i) and (iv) Lime water reacts with chlorine to give Explaination: Reason: Chemical formula of hydrated calcium sulphate or gypsum is CaSO4.2H2O, 11. Students can solve NCERT Class 10 Science Acids Bases and Salts Multiple Choice Questions with Answers to know their preparation level. This process is called (a) 5 Acids Bases and Salts MCQ/Objective Questions Class 10 Science Chapter 2 with answer and explanation forCBSE/NCERT syllabus and NEET. (d) potassium, 18. Sodium chloride 4. Brine is an Potassium nitrate has pH value equal to …………. (c) baking soda (d) black. Sodium chloride In terms of acidic strength, which one of the following is in the correct increasing order? Acids, Bases and Salts Class 10 Important Questions Very Short Answer Type. (d) aqueous solution of sodium bicarbonate, Question 8. (a) MetiWanoic acid 8. baking soda and this causes pain and irritation. (c) Washing soda i) Sour taste ii)Turns blue litmus red iii)Turns red litmus blue iv)Both (i) and (ii) 2.Basic Characteristics of Base is/are? When hydrogen chloride gas is prepared on a humid day, the gas is usually passed through the guard tube containing calcium chloride. (b) (ii) and (iv) (in) Temperature of the solution remains the same 7H2O (iv) Lower the pH, weaker the base 5. Number of hydrogen atoms presentin the molecule. Water of crystallisation (g) HC1 is a weak acid. Density of the acid. (d) Na2C03 . 23. Ca in acids is responsible for their acidic properties. (i) Temperature of the solution decreases Which of the following statements is correct about an aqueous solution of an acid and of a base? Studiestoday. All the MCQs are taken from NCERT Textbooks issued for session 2020-2021. 10. 2. (c) Na2C03 . (i) The acid is to be added slowly in water to prevent the mixture to be splashed. 14. Metal oxide + Acid → Salt + _____ . 6. 1. 3. (c) calcium oxide What is the pH range of our body? 12. (a) aqueous solution of sodium hydroxide (d) 120°C, Question 10. Name the acid present in the following: (i) Tomato (ii) Vinegar (iii) Tamarind. Class 10 Problem for Acid. Question 1 A solution turns red litmus blue, its pH is likely to be (a) 1 (b) 4 (c) 5 (d) 10. Chapter 2 - Acids Bases and Salts. (c) Sodium zinc-oxide and hydrogen gas (b) Lime Density of the acid. At the end of Multiple Choice Questions, the answer key has also been provided for your reference. (b) aqueous solution of sodium carbonate than 7. Download CBSE Class 10 Science HOTs Question Acids Bases And Salts in pdf, Science High Order Thinking Skills questions and answers. (b) (ii) and (iv) (d) Na2C03 . on the bee-stung area gives relief. (a) 5 (c) blue-black litmus solution…………. Stronger the base, higher is the pH. (d) Oxalic acid, 7. Ans1. Among HCl, H2SO4 and CH3COOH, …………. Question 1. (a) strong acid and strong base Na2CO3 . (d) tartaric acid, 9. What is the pH range of our body? (d) Hydrochloric acid < Water < Acetic acid, 5. Explain ho… So, practice below provided MCQ’s of CBSE Class 10 Chapter 2 Acids, Bases, and Salts topics to score maximum marks in your pre-board and final board exams. (d) (ii) and (iv). Super 10 CBSE Class 10 Science 2020 Exam Sample Papers 2nd Edition 3. When copper oxide and dilute hydrochloric acid react, colour changes to Answer: Metallic oxides are basic in nature. (b) baking soda (c) absorb moisture from the gas Acids Bases and Salts Extra Questions Very Short Answer Type. In this article, we have provided Acids, Bases, and Salts MCQ Questions for Class 10 CBSE Science Exam 2020 with a detailed explanation of answers. …………. (c) as a cleansing agent ... Download latest MCQs for Class 10 Science, download in pdf free. Nettle sting is a natural source of which acid? CH3COOH. OH– ions/H3O+ ions, dilution (a) Blue vitriol (a) Zinc hydroxide and sodium (c) Ammonium hydroxide solution (i) Temperature of the solution decreases . An aqueous solution turns red litmus solution blue. CH3COOH. Oxygen atoms present. (d) in alkaline batteries, Question 24. Download CBSE Class 10 Chemistry Acids Bases and Salts MCQs in pdf, Chemistry chapter wise Multiple Choice Questions free 12. (b) Lime What is formed when zinc reacts with sodium hydroxide? 9. Answer: b Which one of the given is an organic acid? (b) calcium carbonate Which one of the following will turn red litmus blue? (a) washing soda (iv) Lower the pH, weaker the base Questions: 1. (d) Hydrochloric acid < Water < Acetic acid, Question 5. 9. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. The salts of a strong acid and weak base are …………. The blank space formed is i)Water ii)Hydrogen gas iii)Oxygen gas iv)Depends on reactants. Lime water reacts with chlorine to give 3. The reaction is highly exothermic, therefore, constant cooling should be done. 2H2O Two solutions A and B have pH values of 5 and 8 respectively. (b) Water < Hydrochloric acid < Acetic acid (a) pink (in) Lower the pH, stronger the base As per their official notification, this time CBSE Exam Pattern 2020 is having slight changes. Rain is called acid rain when its: (a) 7.0 – 7.8 Question 1. is the fixed number of water molecules chemically attached to each formula unit of a salt in its crystalline form. Sodium hydroxide is a 7 or seven (b) (i) and (iii) 1. (b) pH falls below 6 (a) Baking powder (b) Baking soda Use of mild base like …………. (ii) Bulb will glow because HCl is a strong acid and furnishes ions for conduction. Tooth enamel is made up of (c) strong acid and weak base 1. 10H2O. . The salts of a strong acid and weak base are …………. H+ (c) absorb moisture from the gas (iv) Salt formation takes place (i) Higher the pH, stronger the acid Online Test of Chapter 2 Acid, Bases and Salt MCQ 1 Science| Class 10th Questions: 1. Excess addition of which of the following solution would reverse the change? (c) Acetic acid < Water < Hydrochloric acid is one of the raw materials for the production of baking soda. The board is going to conduct a Class 10 CBSE Science Exam on 4th March 2020. (d) tartaric acid, Question 9. (a) (i) and (iii) 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. (c) 110°C Answer: d . (c) Tartaric acid MCQs. 4. 12. (d) weak acid and strong base, 12. Online Test of Chapter 2 Acid, Bases and Salt MCQ 3 Science| Class 10th. Question 23. (b) 10 MCQ Questions for Class 10 Science Pdf Chapter 2 Acids, Bases and Salts. (c) strong acid and weak base Which one of the following is acidic? D. Both … Use of mild base like …………. (i) Bulb will not glow because electrolyte is not acidic. (a) calcium phosphate (b) Baking soda …………. Excess addition of which of the following solution would reverse the change? It makes easy to grasp the in-depth concept and logic of the question. (d) strong acid. Explaination: Reason: Chemical formula of hydrated calcium sulphate or gypsum is CaSO4.2H2O, Question 11. Here is a compilation of Free MCQs of Class 10 Science Book Chapter 2 – Acids, Bases and Salts. (a) acids, which are soluble in water Hence, a metallic oxide reacts with an acid to produce salt and water. (a) Lemon juice (b) Tomatoes (c) Milk (d) All. (b) baking powder (d) 120°C, 10. Rain is called acid rain when its: During indigestion the stomach produces too much …………. (a) acids, which are soluble in water 1.Name the acid present in the following: (i) Tomato (ii) Vinegar (iii) Tamarind Answer. (d) Sodium zincate and water, Answer: b How many water molecules does hydrated cal-cium sulphate contain? You can refer to NCERT Solutions for Class 10 Science Chapter 2 Acids, Bases and Salts to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Solution : The stronger an acid is, the more easily it loses a proton, H +. is the fixed number of water molecules chemically attached to each formula unit of a salt in its crystalline form. (a) Zinc hydroxide and sodium Explaination: Reason: Guard tube drys (absorbs water) from calcium chloride on a humid day. Online Test of Chapter 2 Acid, Bases and Salt MCQ 1 Science| Class 10th Questions: 1. (d) Tartaric acid, 17. (ii)The process is called dilution. you can also practice more MCQ Questions for Class 10 Science Acids, Bases, and Salts with Answers from here. 2. (a) bleaching powder (ii) Temperature of the solution increases MCQs are important for the CBSE and other boards final exams. Sodium hydroxide turns phenolphthalein solution (b) moisten the gas Also, this objective type questions will help you to adjust with all various approaches. Question 1. (b) Na2C03 . 6. 4. MCQ Questions for Class 10 Science with Answers were prepared based on the latest exam pattern. Class 10 Science Chapter 2 Extra Questions and Answers Acids Bases and Salts. washing … Question 21. (c) Na2C03 . (a) absorb the evolved gas (c) colourless (b) aqueous solution of sodium carbonate (d) aqueous solution of sodium bicarbonate, 8. (a) calcium phosphate (b) in manufacture of soap (b) (i) and (iii) 4. (c) 7.0 – 8.4 (c) bases, which are insoluble in water This process is called Students can practice free MCQs as have been added by CBSE in the new Exam pattern. (ii) Higher the pH, weaker the acid Concentration of H + ions fumished by the acid. 7 or seven (d) All . Which one of the following is acidic? Question 2: The strength of acid depends upon. is a weak acid. (d) potassium, Question 18. 6. (c) bases, which are insoluble in water Sodium hydroxide is used Features of NCERT Solutions for Class 10 Chapter 2 Science Acids bases and salts. Answer. (b) weak acid Explaination: Reason: Sodium hydroxide ionises in water and produces a large amount of hydroxide ions. Hence, a non-metallic oxide reacts with a base to produce salt and water. Tooth enamel is made up of Question 1. (a) as an antacid (b) 7.2 – 8.0 (d) 2, Answer: d Find Tutor. than 7. 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(e) The concentration of aqueous solutions of acid, base and salt are generally expressed in molarity. (d) pH is above 7, Question 20. (a) (i) and (iii) (a) Acetic acid 5H2O Find videos, notes, ncert solutions and more@learnfatafat.com What is formed when zinc reacts with sodium hydroxide? (a) (i) and (iv) What happens when a solution of an acid is mixed with a solution of a base in a test tube? 2. more/greater Choose the correct answer: Question 1. (a) Na2C03 . (a) as an antacid 2. pH of basic solution is always …………. Acids turn …………. You can refer to NCERT Solutions for Class 7 Science Chapter 5 Acids, Bases and Salts to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. We know that bases react with acids to form salt and water. (b) 7.2 – 8.0 A. Citric acid. Do give it a shot, and feel free to take the quiz as much as you need. …………. (a) strong acid and strong base (d) Gypsum, Question 4. (c) Ammonium hydroxide solution Ch 3 - Metals and Non-Metals (MCQs) 8. Among HCl, H2SO4 and CH3COOH, …………. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. Acids turn …………. 1. blue, red MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. At what temperature is gypsum heated to form Plaster of Paris? (a) MetiWanoic acid (d) Hydrochloric acid, 22. Correct Option is : 4. (b) Water < Hydrochloric acid < Acetic acid 3. 7H2O with pH value …………. CBSE Class 10 Science Chemistry MCQs of Acids, Bases, and Salts with Answers. Search Tutors Tutor Registration Tutor Login. are the products obtained when bleaching powder reacts with dilute sulphuric acid. Oxygen atoms present. (d) washing soda, 16. (c) 7.0 – 8.4 At what temperature is gypsum heated to form Plaster of Paris? (d) (iv) only, Question 15. with pH value …………. Acids, Bases and Salts Class 10 MCQs Questions with Answers. An aqueous solution turns red litmus solution blue. (a) Blue vitriol Which one of the following salts does not con-tain water of crystallisation? Answers and explanation of MCQ tests are given just below each questions. (b) Lactic acid Question 1. Class 10 Science Chapter 2 Important Questions with Answers Acids, Bases and Salts. Nettle sting is a natural source of which acid? (c) (i) and (iv) (d) orange, 25. Acids Bases and Salts Extra Questions Very Short Answer Type. Book Name : Chemistry Chapter No. (c) bleaching powder Class 10 Science MCQs Chapter 2 Acids Bases and Salts 1. (d) (iv) only, 15. 10. Answer: c Explaination: Reason: Stronger the acid, lesser is the pH. When copper oxide and dilute hydrochloric acid react, colour changes to Also, this objective type questions will help you to adjust with all various approaches. Register online for Science tuition on Vedantu.com to score more marks in CBSE board examination. 2. (a) white Such Multiple Choice Type Questions are ideal to brushes your basic concepts to answer in CBSE Class 10 Science Exam 2020. (b) weak acid and weak base (b) Lactic acid on the bee-stung area gives relief. (b) pH falls below 6 In terms of acidic strength, which one of the following is in the correct increasing order? are the products obtained when bleaching powder reacts with dilute sulphuric acid. (a) Na2C03 . (b) baking soda Alkalis are 1. 5. 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. Ans1. (c) blue-black Answer: d Answer: (d) 10 Class 10 Science Chapter 2 Important Questions with Answers Acids, Bases and Salts. (in) Lower the pH, stronger the base (b) acids, which are insoluble in water (f) pH of a solution can vary from 0-14. (b) yellow Chemical formula of washing soda is Hence, a metallic oxide reacts with an acid to produce salt and water. Question 2: The strength of acid depends upon. (d) absorb Cl– ions from the evolved gas. (a) bleaching powder (b) acids, which are insoluble in water (d) 7.2 – 8.4, Question 19. Alkalis are (c) bleaching powder Ch 1 - Chemical Reactions & Equations (MCQs) 6. (iii) Bulb will not glow because circuit is incomplete. (a) (i) and (iii) Solution : The stronger an acid is, the more easily it loses a proton, H +. Explaination: Reason: Blue-green colour of solution is due to the formation of copper (II) chloride. (c) Sodium zinc-oxide and hydrogen gas (d) weak acid and strong base, Question 12. Which of the following statements is correct about an aqueous solution of an acid and of a base? (b) Citric acid The presence of …………. (c) strong base (d) strong acid. 2H2O (c) pH falls below 5.6 (c) Tartaric acid (a) pH falls below 7 Tomato is a natural source of which acid? Download CBSE Class 10 Chemistry Acids Bases and Salts MCQs in pdf, Chemistry chapter wise Multiple Choice Questions free Which one of the following will turn red litmus blue? Students can solve NCERT Class 10 Science Acids Bases and Salts Multiple Choice Questions with Answers to know their preparation level. (b) moisten the gas (i) Higher the pH, stronger the acid June 12, 2020 October 9, 2020 Manju Kaushik 1 Comment on MCQ Questions for Class 10 Science Chapter 2 Acids, Bases And Salts MCQ Questions for Class 10 Science Chapter 2 Acids, Bases And Salts … Answer: b The apparatus given in the adjoining figure was set up to demonstrate electrical conductivity. Extra Questions for Class 10 Science Chapter 2 Acids Bases and Salts with Answers Solutions. …………. MCQ quiz on Acids Bases and Salts multiple choice questions and answers on Acids Bases and Salts MCQ questions quiz on Acids Bases and Salts objectives questions with answer test pdf. Solve free MCQ questions on Acids Bases and Salts Class 10 Science helpful for CBSE Board. Which one of the following will turn red litmus blue? (b) bluish-green (c) Acetic acid < Water < Hydrochloric acid Explaination: Reason: Zn + 2NaOH → Ma2Zn02 (Sodium Zincate) + H2, 6. 9. acid (HCl) Paheli is writing some statements. 6. (a) Acetic acid (d) black. (b) weak acid and weak base Ca in acids is responsible for their acidic properties. (c) Washing soda (c) Citric acid (b) in manufacture of soap 7. acidic, less Acids, Bases and Salts Class 7 MCQs Questions with Answers. (b) (ii) and (iii) i) Sour taste ii)Turns blue litmus red iii)Turns red litmus blue iv)Both (i) and (ii) 2.Basic Characteristics of Base is/are? 10H2O is Ch 6 - Life Processes - Assertion Reasoning Type Questions 4. Na2CO3 . (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. 11. (c) (ii) only (d) bases, which are soluble in water, 13. (d) (ii) and (iv). When hydrogen chloride gas is prepared on a humid day, the gas is usually passed through the guard tube containing calcium chloride. (iv) Salt formation takes place …………. (ii) Temperature of the solution increases Class 10 Science Chapter 2 MCQ (Multiple Choice Questions) of Acids, Bases and Salts. Explaination: Reason: Stronger the acid, lesser is the pH. OH– ions/H3O+ ions, dilution More.. Class 10 Science MCQs Chapter 2 Acids Bases and Salts 1. 5. (i) Bulb will not glow because electrolyte is not acidic. What happens when a solution of an acid is mixed with a solution of a base in a test tube? (d) Gypsum, 4. (c) strong base CaSO4, Cl2, H2O (b) Na2C03 . Students can solve NCERT Class 10 Science Acids Bases and Salts Multiple Choice Questions with Answers to know their preparation level. 1. blue, red MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts Students can practice the NCERT MCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts with Answers Pdf free download is available here. (b) yellow (a) washing soda . 8. baking soda 11. (d) 2, Answer: d Answer/ Explanation. Metalic oxides are i)Basic in nature ii)Can neutralize acid iii)Acidic in nature iv)Both (i) and (ii) 3. (b) calcium carbonate Tomato is a natural source of which acid? An oxide is acidic and has a pungent odour. Explaination: Reason: Sodium hydroxide ionises in water and produces a large amount of hydroxide ions. We know that acids react with bases to form salt and water. Basic characteristics of Acid is/are? Which of the following statement(s) is (are) correct? (d) (ii) and (iv), 2. There are a lot of practical based questions in this Solution and these types of questions are often asked in CBSE class 10 science examination. Acids. 9. acid (HCl) Pre Foundation Question banks are helpful for students aspiring for NTSE, Olympiad, KVPY, IIT JEE, Medical and other engineering and competitive exams. We know that bases react with acids to form salt and water. Two solutions A and B have pH values of 5 and 8 respectively. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. 7. acidic, less 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. (b) (ii) and (iii) Extra Questions for Class 10 Science Chapter 2 Acids Bases and Salts with Answers Solutions. Answer: c is a weak acid. The board is going to conduct a Class 10 CBSE Science Exam on 4th March 2020. Chloride 7. acidic, less 8. baking soda 9. acid ( c ) colourless ( d 120°C! Tomato ( ii ) Bulb will not glow because HCl is a strong acid and a. Science, Download in Pdf free Download ) blue vitriol ( b yellow. A base to produce salt and water 10 Important Questions with Answers Acids, Bases and Salts ) acid... Vedantu.Com to score more marks in CBSE Class 10 mcq questions on acids, bases and salts class 10 Acids Bases and Salts been provided for your reference (... A metallic oxide reacts with sodium hydroxide turns phenolphthalein solution ( a ) Na2C03 Vedantu.com to score more marks CBSE! Molecules does hydrated cal-cium sulphate contain ) weak acid ( b ) weak base ( d ) Gypsum Question... Molecules does hydrated cal-cium sulphate contain baking powder ( b ) Tomatoes ( c Citric! 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