{"id":4042,"date":"2016-05-06T11:49:00","date_gmt":"2016-05-06T06:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-2\/"},"modified":"2023-03-22T17:12:41","modified_gmt":"2023-03-22T11:42:41","slug":"ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/","title":{"rendered":"NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#NCERT_Class_10_Science_Chapter_wise_Solutions\" >NCERT Class 10 Science Chapter wise Solutions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#NCERT_Solutions_for_Class_10_Science_Chemical_Reactions_and_Equations_Part_2\" >NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/a><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#2\" >2.<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#3_What_happens_when_dilute_hydrochloric_acid_is_added_to_iron_filling_Tick_the_correct_answer\" >3. What happens when dilute hydrochloric acid is added to iron filling? Tick the correct answer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#4_What_is_balanced_chemical_equation_Why_should_chemical_equation_be_balanced\" >4. What is balanced chemical equation? Why should chemical equation be balanced?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#5_Translate_the_following_statements_into_chemical_equations_and_then_balance_them\" >5. Translate the following statements into chemical equations and then balance them.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#6_Balance_the_following_chemical_equations\" >6. Balance the following chemical equations:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#7_Write_the_balanced_chemical_equations_for_the_following_reactions\" >7. Write the balanced chemical equations for the following reactions.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#8_Write_the_balanced_chemical_equation_for_the_following_and_identify_the_type_of_reaction_in_each_case\" >8. Write the balanced chemical equation for the following and identify the type of reaction in each case.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#9_What_does_one_mean_by_exothermic_and_endothermic_reactions_Give_examples\" >9. What does one mean by exothermic and endothermic reactions? Give examples.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#10_Why_respiration_is_considered_an_exothermic_reaction_Explain\" >10. Why respiration is considered an exothermic reaction? Explain.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#11_Why_decomposition_reactions_are_called_the_opposite_of_combination_reactions_Write_equations_for_these_reactions\" >11. Why decomposition reactions are called the opposite of combination reactions? Write equations for these reactions.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#12_Write_one_equation_each_for_decomposition_reactions_where_energy_is_supplied_in_the_form_of_heat_light_or_electricity\" >12. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#13_What_is_difference_between_displacement_and_double_displacement_reactions_Write_equations_for_these_reactions\" >13. What is difference between displacement and double displacement reactions? Write equations for these reactions.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#14_In_refining_of_silver_the_recovery_of_silver_from_silver_nitrate_solution_involved_displacement_by_copper_metal_Write_down_the_reaction_involved\" >14. In refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#15_What_do_you_mean_by_a_precipitation_reaction_Explain_by_giving_examples\" >15. What do you mean by a precipitation reaction? Explain by giving examples.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#16_Explain_the_following_in_terms_of_gain_and_loss_of_oxygen_with_two_examples_each\" >16. Explain the following in terms of gain and loss of oxygen with two examples each?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#17_A_shiny_brown_coloured_element_%E2%80%98X_on_heating_in_air_becomes_black_in_colour_Name_the_element_%E2%80%98X_and_the_black_coloured_compound_formed\" >17. A shiny brown coloured element \u2018X\u2019 on heating in air becomes black in colour. Name the element \u2018X\u2019 and the black coloured compound formed.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#18_Why_do_we_apply_paint_on_iron_articles\" >18. Why do we apply paint on iron articles?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#19_Oil_and_fat_containing_food_items_are_flushed_with_nitrogen_Why\" >19. Oil and fat containing food items are flushed with nitrogen. Why?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#20_Explain_the_following_terms_with_one_example_each\" >20. Explain the following terms with one example each.<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#NCERT_Solutions_for_Class_10_Science\" >NCERT Solutions for Class 10 Science<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/#CBSE_app_for_Students\" >CBSE app for Students<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2 Class 10 Science Class book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE Board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 10 Science chapter wise NCERT solution for Science Book for all the chapters can be downloaded from our website and myCBSEguide mobile app for free.<\/p>\n<p style=\"text-align: center;\"><strong>NCERT solutions for Class 10 Science\u00a0Chemical Reactions and Equations<\/strong><\/p>\n<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-10-science\/1176\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/10%20Science%20Book.jpg\" alt=\"NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2\" width=\"124\" height=\"152\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Class_10_Science_Chapter_wise_Solutions\"><\/span><span class=\"underline-text\">NCERT Class 10 Science Chapter wise Solutions<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>Chemical Reactions and Equations<\/li>\n<li>Acids, Bases and Salts<\/li>\n<li>Metals and Non-metals<\/li>\n<li>Carbon and Its Compounds<\/li>\n<li>Periodic Classification of Elements<\/li>\n<li>Life Processes<\/li>\n<li>Control and Coordination<\/li>\n<li>How do Organisms Reproduce?<\/li>\n<li>Heredity and Evolution<\/li>\n<li>Light Reflection and Refraction<\/li>\n<li>Human Eye and Colourful World<\/li>\n<li>Electricity<\/li>\n<li>Magnetic Effects of Electric Current<\/li>\n<li>Sources of Energy<\/li>\n<li>Our Environment<\/li>\n<li>Management of Natural Resources<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_10_Science_Chemical_Reactions_and_Equations_Part_2\"><\/span>NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>1. Which of the following statement about the reaction below are incorrect?<\/strong><\/p>\n<p><strong><img decoding=\"async\" id=\"Picture 9\" style=\"height: 29px; width: 329px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image009.png\" \/><\/strong><\/p>\n<p><strong>(a) Lead is getting reduced.<\/strong><\/p>\n<p><strong>(b) Carbon dioxide is getting oxidized <\/strong><\/p>\n<p><strong>(c) Lead oxide is getting oxidized <\/strong><\/p>\n<p><strong>(d) Lead is getting reduced <\/strong><\/p>\n<p><strong>i. (a) and (b)<\/strong><\/p>\n<p><strong>ii. (a) and (c)<\/strong><\/p>\n<p><strong>iii. (a), (b) and (c)<\/strong><\/p>\n<p><strong>iv. All <\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>As statement (a) and (b) are incorrect, answer (i) is correct.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"2\"><\/span><strong>2. <img decoding=\"async\" style=\"height: 25px; width: 241px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image010.png\" \/><\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>The above reaction is an example of a <\/strong><\/p>\n<p><strong>(a) combination reaction <\/strong><\/p>\n<p><strong>(b) double displacement reaction<\/strong><\/p>\n<p><strong>(c) decomposition reaction <\/strong><\/p>\n<p><strong>(d) displacement reaction <\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans.<\/strong> This is an example of displacement reaction because Fe in FeO<sub>3<\/sub> has been displaced by Al. Hence correct answer is (d).<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"3_What_happens_when_dilute_hydrochloric_acid_is_added_to_iron_filling_Tick_the_correct_answer\"><\/span><strong>3. What happens when dilute hydrochloric acid is added to iron filling? Tick the correct answer<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>(a) Hydrogen gas and iron chloride are produced.<\/strong><\/p>\n<p><strong>(b) Chlorine gas and iron hydroxide are produced <\/strong><\/p>\n<p><strong>(c) No reaction takes place<\/strong><\/p>\n<p><strong>(d) Iron salt and water are produced <\/strong><\/p>\n<p><strong>Ans.<\/strong> Answer (a) is correct.<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"4_What_is_balanced_chemical_equation_Why_should_chemical_equation_be_balanced\"><\/span><strong>4. What is balanced chemical equation? Why should chemical equation be balanced?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>The reaction in which the number of atoms of each element is equal on the reactant side and product side is called balanced equation.<\/p>\n<p style=\"text-align: justify;\">Chemical reaction should be balanced because only a balanced equation tells us the relative quantities of different reactants and products involved in the reaction.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5_Translate_the_following_statements_into_chemical_equations_and_then_balance_them\"><\/span><strong>5. Translate the following statements into chemical equations and then balance them.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>(a) Hydrogen gas combines with nitrogen to form ammonia.<\/strong><\/p>\n<p><strong>(b) Hydrogen sulphide gas burns in air to give water and Sulpher dioxide.<\/strong><\/p>\n<p><strong>(c) Barium chloride reacts with aluminum sulphate to give aluminum chloride and precipitate of barium sulphate <\/strong><\/p>\n<p><strong>Ans. (a). <\/strong><img decoding=\"async\" id=\"Picture 11\" style=\"height: 30px; width: 132px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image011.png\" \/><\/p>\n<p><img decoding=\"async\" id=\"Picture 12\" style=\"height: 30px; width: 155px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image012.png\" \/><\/p>\n<p><strong>(b). <\/strong><img decoding=\"async\" id=\"Picture 13\" style=\"height: 25px; width: 206px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image013.png\" \/><\/p>\n<p><img decoding=\"async\" id=\"Picture 14\" style=\"height: 30px; width: 239px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image014.png\" \/><\/p>\n<p><strong>(c). <\/strong><img decoding=\"async\" id=\"Picture 15\" style=\"height: 31px; width: 293px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image015.png\" \/><\/p>\n<p><img decoding=\"async\" id=\"Picture 16\" style=\"height: 28px; width: 324px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image016.png\" \/><\/p>\n<p><strong>(d). <\/strong><img decoding=\"async\" id=\"Picture 17\" style=\"height: 28px; width: 198px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image017.png\" \/><\/p>\n<p><img decoding=\"async\" id=\"Picture 18\" style=\"height: 26px; width: 232px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image018.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3><span class=\"ez-toc-section\" id=\"6_Balance_the_following_chemical_equations\"><\/span><strong>6. Balance the following chemical equations:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong><img decoding=\"async\" id=\"Picture 19\" style=\"height: 176px; width: 437px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image019.png\" \/><\/strong><\/p>\n<p><strong>Ans. <\/strong>Balanced chemical equation are:<\/p>\n<p><img decoding=\"async\" id=\"Picture 20\" style=\"height: 180px; width: 449px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image020.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3><span class=\"ez-toc-section\" id=\"7_Write_the_balanced_chemical_equations_for_the_following_reactions\"><\/span><strong>7. Write the balanced chemical equations for the following reactions.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>(a) Calcium hydroxide + Carbon dioxide \u2192 Calcium carbonate + Water<\/strong><\/p>\n<p><strong>(b) Zinc + Silver nitrate \u2192 Zinc nitrate + Silver<\/strong><\/p>\n<p><strong>(c) Aluminum + Copper chloride \u2192 Aluminum chloride +Copper <\/strong><\/p>\n<p><strong>(d) Barium chloride + Potassium sulphate \u2192 Barium sulphate + potassium chloride<\/strong><\/p>\n<p><strong>Ans. <\/strong>Balanced chemical equation for reactions are:<\/p>\n<p><img decoding=\"async\" id=\"Picture 21\" style=\"height: 184px; width: 314px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image021.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3><span class=\"ez-toc-section\" id=\"8_Write_the_balanced_chemical_equation_for_the_following_and_identify_the_type_of_reaction_in_each_case\"><\/span><strong>8. Write the balanced chemical equation for the following and identify the type of reaction in each case.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>(a) Potassium bromide (s) + Barium iodide (aq) \u2192 Potassium iodide (aq) + Barium bromide(s)<\/strong><\/p>\n<p><strong>(b) Zinc carbonate (s) \u2192 Zinc oxide (s) + Carbon dioxide (g)<\/strong><\/p>\n<p><strong>(c) Hydrogen (g) + Chlorine (g) \u2192 Hydrogen chloride (g)<\/strong><\/p>\n<p><strong>(d) Magnesium (s) + Hydrochloric acid (aq) \u2192 Magnesium chloride (aq) + Hydrogen (g) <\/strong><\/p>\n<p><strong>Ans.<\/strong> Balanced equations are<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 22\" style=\"height: 139px; width: 530px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image022.png\" \/><\/p>\n<hr \/>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"9_What_does_one_mean_by_exothermic_and_endothermic_reactions_Give_examples\"><\/span><strong>9. What does one mean by exothermic and endothermic reactions? Give examples.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>A reaction in which energy is released in the form of heat or light is called exothermic reaction. Example of exothermic reaction are:<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 23\" style=\"height: 80px; width: 317px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image023.png\" \/><\/p>\n<p style=\"text-align: justify;\">A reaction in which energy is absorbed from the surrounding and cooling is produced is called endothermic reaction. Example of endothermic reaction are:<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 24\" style=\"height: 78px; width: 212px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image024.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"10_Why_respiration_is_considered_an_exothermic_reaction_Explain\"><\/span><strong>10. Why respiration is considered an exothermic reaction? Explain. <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Ans. <\/strong>During respiration, we inhale oxygen from the atmosphere which reacts with glucose in your body cells to produce carbon dioxide and water.<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 25\" style=\"height: 34px; width: 419px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image025.png\" \/><\/p>\n<p style=\"text-align: justify;\">Heat is liberated in this process; hence respiration is considered an exothermic reaction.<\/p>\n<hr \/>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"11_Why_decomposition_reactions_are_called_the_opposite_of_combination_reactions_Write_equations_for_these_reactions\"><\/span><strong>11. Why decomposition reactions are called the opposite of combination reactions? Write equations for these reactions.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong><img decoding=\"async\" id=\"Picture 26\" style=\"height: 26px; width: 261px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image026.png\" \/><\/p>\n<p>In a decomposition reaction, a single substance breaks down into two or more substances while in a combination reaction, two or more substances react to produce one substance. Therefore, decomposition reactions are called opposite of combination reactions.<\/p>\n<p>Example of decomposition reaction: Example of combination reaction:<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 27\" style=\"height: 34px; width: 259px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image027.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"12_Write_one_equation_each_for_decomposition_reactions_where_energy_is_supplied_in_the_form_of_heat_light_or_electricity\"><\/span><strong>12. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>Ans.<\/strong> Decomposition by heat:<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 28\" style=\"height: 37px; width: 327px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image028.png\" \/><\/p>\n<p style=\"text-align: justify;\">Decomposition by electricity:<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 29\" style=\"height: 31px; width: 268px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image029.png\" \/><\/p>\n<p style=\"text-align: justify;\">Decomposition by light:<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 30\" style=\"height: 32px; width: 285px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image030.png\" \/><\/p>\n<hr \/>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"13_What_is_difference_between_displacement_and_double_displacement_reactions_Write_equations_for_these_reactions\"><\/span><strong>13. What is difference between displacement and double displacement reactions? Write equations for these reactions.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Ans. <\/strong>In displacement reaction, more reactive element displaces the less reactive element from its compound. For example<\/p>\n<p><img decoding=\"async\" id=\"Picture 31\" style=\"height: 29px; width: 368px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image031.png\" \/><\/p>\n<p>But in double displacement reaction, exchange of ions takes place. For example<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 32\" style=\"height: 24px; width: 397px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image032.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"14_In_refining_of_silver_the_recovery_of_silver_from_silver_nitrate_solution_involved_displacement_by_copper_metal_Write_down_the_reaction_involved\"><\/span><strong>14. In refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the reaction involved.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>The reaction involved is:<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 33\" style=\"height: 27px; width: 497px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image033.png\" \/><\/p>\n<hr \/>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"15_What_do_you_mean_by_a_precipitation_reaction_Explain_by_giving_examples\"><\/span><strong>15. What do you mean by a precipitation reaction? Explain by giving examples.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Ans. <\/strong>A chemical reaction in which an insoluble substance (precipitate) is formed is called precipitation reaction. For example<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 34\" style=\"height: 26px; width: 274px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image034.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"16_Explain_the_following_in_terms_of_gain_and_loss_of_oxygen_with_two_examples_each\"><\/span><strong>16. Explain the following in terms of gain and loss of oxygen with two examples each?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>a. Oxidation <\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>b. Reduction<\/strong><\/p>\n<p><strong>Ans. <\/strong>Oxidation- addition of oxygen or removal of hydrogen in a chemical reaction is called oxidation reaction. For example<\/p>\n<p><img decoding=\"async\" id=\"Picture 35\" style=\"height: 77px; width: 167px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image035.png\" \/><\/p>\n<p>Reduction- addition of hydrogen or removal of oxygen in a chemical reaction is called oxidation reaction. For example<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 36\" style=\"height: 77px; width: 197px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image036.png\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"17_A_shiny_brown_coloured_element_%E2%80%98X_on_heating_in_air_becomes_black_in_colour_Name_the_element_%E2%80%98X_and_the_black_coloured_compound_formed\"><\/span><strong>17. A shiny brown coloured element \u2018X\u2019 on heating in air becomes black in colour. Name the element \u2018X\u2019 and the black coloured compound formed.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>The brown coloured element \u2018X \u2018 is copper. On heating in air it forms copper oxide, which is black in colour.<\/p>\n<p style=\"text-align: justify;\"><img decoding=\"async\" id=\"Picture 37\" style=\"height: 26px; width: 165px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch01\/image037.png\" \/><\/p>\n<hr \/>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"18_Why_do_we_apply_paint_on_iron_articles\"><\/span><strong>18. Why do we apply paint on iron articles?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>We apply paint on iron articles to prevent rusting. Iron articles do not come in contact of atmospheric oxygen and moisture and thus the rusting is prevented.<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"19_Oil_and_fat_containing_food_items_are_flushed_with_nitrogen_Why\"><\/span><strong>19. Oil and fat containing food items are flushed with nitrogen. Why?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Ans. <\/strong>Oil and fat containing items get rancid due to oxidation with atmospheric oxygen. To prevent rancidity food items are flushed with nitrogen. Nitrogen do not reacts with oil and fat containing items.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2<\/p>\n<h3><span class=\"ez-toc-section\" id=\"20_Explain_the_following_terms_with_one_example_each\"><\/span><strong>20. Explain the following terms with one example each.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>a. Corrosion <\/strong><\/p>\n<p><strong>b. Rancidity.<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>Corrosion- action of air, water, acid or other substance on metal surface to form oxides and carbonates is called corrosion. Corrosion of iron is called rusting. Green coating on copper and black coating on silver is examples of corrosion.<\/p>\n<p style=\"text-align: justify;\">Rancidity-change in smell of food item containing fat and oil when kept open for longer time due to oxidation is called rancidity. To prevent rancidity food items are flushed with nitrogen or kept in airtight containers.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_10_Science\"><\/span>NCERT Solutions for Class 10 Science<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 10 Science PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 10 Science includes text book solutions from Book. NCERT Solutions for CBSE Class 10 Science have total 16 chapters. 10 Science NCERT Solutions in PDF for free Download on our website. Ncert Science class 10 solutions PDF and Science ncert class 10 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_app_for_Students\"><\/span>CBSE app for Students<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download\u00a0NCERT Solutions for class 10 Social Science, Computer Science, Home Science, Hindi , English, Maths Science do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2 Class 10 Science Class book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE Board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked &#8230; <a title=\"NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-chemical-reactions-and-equations-part-2\/\" aria-label=\"More on NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":30060,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[281,1367],"tags":[1043,283,438,216,349],"class_list":["post-4042","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ncert-solutions","category-science-cbse-class-10","tag-cbse-class-10-science","tag-cbse-study-material","tag-class-10","tag-ncert-solutions","tag-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Class 10 Science Chemical Reactions and Equations Part 2<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for Class 10 Science Chemical Reactions and Equations Part 2 in PDF format for free download. 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