Now, since one of the compounds formed is calcium chloride, it shows that the metal compound is calcium carbonate. It is used to test garden soil for acidity. Define the principal focus of a concave mirror. NCERT Solutions For Class 10 Science Chapter 2 Notes for Acids And Bases has been provided by India’s topmost Chemistry teachers. Edition : 2070-2071. More the concentration of H+ ions, higher the acidic nature of the solution. Distilled water does not conduct electricity because it does not contain any ionic compound (like acids, bases or salts) dissolved in it. The aqueous solution of an acid conducts electricity due to the presence of charged particles called ions in it. Give two examples. Metal compound A reacts with dilute hydrochloric acid to produce effervescence. Answer: Sodium carbonate. In this case, solution A(having a lower pH of 6) will have more hydrogen ion concentration.Solution A is acidic and solution B is basic. Write an equation to show the reaction between plaster of Paris and water. NCERT Solutions Class 10 Science is very helpful for students in covering full syllabus. Ans: A coin and feather when dropped in vacuum falls simultaneously due to free fall as there is no external resistance in vacuum. Solution: Solution: Fresh milk has a pH of 6. Answer: NCERT Solutions for Chapter 1 - Chemical Reactions and Equations, NCERT Solutions for Chapter 2 - Acids, Bases and Salts, NCERT Solutions for Chapter 3 - Metals and Non-metals, NCERT Solutions for Chapter 4 - Carbon and its Compounds, NCERT Solutions for Chapter 5 - Periodic Classification of Elements, NCERT Solutions for Chapter 6 - Life Processes, NCERT Solutions for Chapter 7 - Control and Coordination. This will make the plaster of Paris useless after sometime. A salt is dissolved in water. On adding 10 mL of NaCl to it, what will be the pH of the new solution? Answer: (i) Hydrogen (H2) gas is liberated when an acid reacts with a metal. (vii) This means no ions or H+ ions are present in the solution. Chemical Properties Of Acids (d) All of the above Download – NCERT Solutions for Class 10 Science Chapter 1: Chemical Reactions and Equations This chapter covers balancing of a chemical reaction, types of chemical reactions like Combination reactions, Decomposition reactions, Displacement reactions, Double displacement reactions and Redox reactions (Oxidation and Reduction reactions). Question 7. What is a neutralization reaction? (b) Less than 5 Answer: (v) The bulb does not glow. 10H2O Question 2 It covers the topic of Chemistry which covers the idea of chemicals. Uses of baking soda : Give two important uses of washing soda and baking soda. This means that the solution having lower pH will have more hydrogen ion concentration. Diluting an acid should be done by adding concentrated acid to water gradually with stirring and not by adding water to concentrated acid. (a) lemon juice Nuclear energy can generated by controlled Nuclear fission reactions. Solution: Class 10 Science acts as a foundation for the challenging concepts that awaits a student in higher classes. Q1. (b) Why does this milk take a long time to set as curd ? Answer: Write word equations and then balanced equations for the reaction taking place when (b) II Bases + Acids → Salt + Water Question 8 (UP 2007, 15) Or What Do All Acids And All Bases Have In Common? The reason of this is its tetravalency and catenation which has been discussed. Question 6. . Question 15 HCl, HNO3, etc. Generally speaking, Chemical Reactions and Equations, Carbon and its Compounds, Periodic Classification of Elements, Life Processes, Light, Electricity are some of the important chapters in this book. Question 4 (c) IV (d) Lime water (d) Petri dish Question 4 And the presence of the hydrogen gas can be tested by bringing a burning splinter/ matchstick near the gas produced. Question 2 The pH of mouth should be more than 5.5. (b) II The acidic behaviour of acid is due to the presence of hydrogen ions. NCERT Solutions For Class 10 Science Chapter 5 Periodic Classification Of Elements: Students who are in search for periodic classification of elements class 10 question and answers can refer to this article.Working on NCERT Solutions for class 10 science chapter 5 notes will help candidates to build a strong foundation over the subject Science. Answer: Give the equation of the reaction involved ? If the coil is placed near to a current-carrying conductor, the magnetic field may change either due to a change in the current through the conductor or due to the relative motion between the coil and conductor. (b) Vinegar Electricity generation through magnet is discussed. … (b) 4 Energy can also be obtained from earth crust, known as geo-thermal energy. What is a neutralisation reaction ? indicates no colour change. Arrange the pH in increasing order of hydrogen-ion concentration. An acid is a substance, which dissociates on dissolving in water to produce hydrogen ions [H+(aq) ions]. (a) 4 mL Explain why? Question 2 As previously stated, Environment Science part is covered in the Biology syllabus. Solution: Which of this is acidic and which one is basic? (d) As pH paper turns greenish blue for weakly basic compound and antacids contain weak base like Mg(OH)2. The solution which turns red litmus to blue will be a basic solution. Solution: [CCE 2014] Answer: Question 1 as an oxidising agent in chemical industry. Question 9 NCERT Solutions for Class 10 Science Chapter 5- Periodic Classification Of Elements. 11 < 9 < 7 < 4 < 1 What would be the electron dot structure of carbon dioxide which has the formula CO 2? NCERT Solutions for Class 10 Computer Science Chapter 10 String Data Manipulation pdf download, up board solutions for Class 10 computer science. Question 3. Since ancient times, it’s been proved several times that Science has the capacity to revolutionize the phases of Mankind. Plaster of Paris should be stored in a moisture proof container. Thus, it will not affect the pH of the solution. (UP 2011, 12) Or Write a short note on ‘Sequential files’. Why does distilled water not conduct electricity, whereas rainwater does ? Answer: Question 7 Which of the following statements shows the property of an acid? (ii) Illustration : Set up the apparatus as shown in the given figure. 10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HC1. 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)? (b) Blue litmus solution (a) Milk is made slightly alkaline so that it may not get sour easily due to the formation of lactic acid in it. (ii) It is used for removing permanent hardness of water. H2 gas is not soluble in water. The pH of this salt solution was found to be 7 by measuring the pH with a universal indicator paper. CuSO4.5H2O, Na2CO3.10H2O. Plaster of Paris should be stored in a moisture-proof container. NCERT Solutions for Class 10th: Ch 6 Life Processes Science In Text Questions Page No: 95 1. (c) NH4Cl Book : Science. (c) sodium bicarbonate solution Complete NCERT Book Page wise Solution Class 10th as per Latest CBSE Syllabus SCIENCE Chapter-11, The Human Eye and the Colourful World The following page provides you NCERT book solutions for Class 10 SCIENCE, SCIENCE Class 10 notes in pdf are also available in the related links between the texts. (d) Petri dish is not required for doing experiment of pH. 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) ? [NCERT Exemplar] Question 7 (b) dilute hydrochloric acid reacts with magnesium ribbon water of Crystallization : (ii) Put the blue litmus paper obtained above in the remaining two test-tubes, turn-by-turn. Which solution has more hydrogen ion concentration? So, an antacid would change the colour of this pH paper to greenish blue. 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