{"id":4269,"date":"2016-05-13T11:49:00","date_gmt":"2016-05-13T06:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/"},"modified":"2018-07-05T12:45:52","modified_gmt":"2018-07-05T07:15:52","slug":"ncert-solutions-for-class-7-science-acids-basis-and-salts","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/","title":{"rendered":"NCERT solutions for Class 7 Science Acids, basis and salts"},"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-7-science-acids-basis-and-salts\/#NCERT_Class_7_Social_Science_Chapter_wise_Solutions\" >NCERT Class 7 Social 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-7-science-acids-basis-and-salts\/#NCERT_solutions_for_Class_7_Science_Acids_basis_and_salts\" >NCERT solutions for Class 7 Science Acids, basis and salts<\/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-7-science-acids-basis-and-salts\/#Class%E2%80%93VII_CHAPTER-05\" >Class\u2013VII (CHAPTER-05)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#ACIDS_BASES_AND_SALTS\" >ACIDS, BASES AND SALTS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_1State_differences_between_acids_and_bases\" >Question 1.State differences between acids and bases.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_2Ammonium_is_found_in_many_household_products_such_as_window_cleaners_Itturns_red_litmus_blue_What_is_its_nature\" >Question 2.Ammonium is found in many household products, such as window cleaners. Itturns red litmus blue. What is its nature?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_3Name_the_source_from_which_litmus_solution_is_obtained_What_is_the_use_of_thissolution\" >Question 3.Name the source from which litmus solution is obtained. What is the use of thissolution?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_5Describe_the_process_of_neutralization_with_the_help_of_an_example\" >Question 5.Describe the process of neutralization with the help of an example.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_6Mark_%E2%80%98T_if_the_statement_is_true_and_%E2%80%98F_if_it_is_false\" >Question 6.Mark \u2018T\u2019 if the statement is true and \u2018F\u2019 if it is false.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_7Dorji_has_a_few_bottles_of_soft_drink_in_his_restaurant_but_unfortunately_theseare_not_labelled_He_has_to_serve_the_drinks_on_the_demand_of_customers_One_customerwants_acidic_drink_another_wants_basic_and_third_one_wants_neutral_drink_How_will_Dorjidecide_which_drink_it_to_be_served_to_whom\" >Question 7.Dorji has a few bottles of soft drink in his restaurant, but, unfortunately theseare not labelled. He has to serve the drinks on the demand of customers. One customerwants acidic drink; another wants basic and third one wants neutral drink. How will Dorjidecide which drink it to be served to whom?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_8Explain_why\" >Question 8.Explain why:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_9Three_liquids_are_given_to_you_One_is_hydrochloric_acid_another_is_sodiumhydroxide_and_third_is_a_sugar_solution_How_will_you_identify_them_You_have_onlyturmeric_indicator\" >Question 9.Three liquids are given to you. One is hydrochloric acid, another is sodiumhydroxide and third is a sugar solution. How will you identify them? You have onlyturmeric indicator.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_10Blue_litmus_paper_is_dipped_in_a_solution_It_remains_blue_What_is_the_nature_ofthe_solution_Explain\" >Question 10.Blue litmus paper is dipped in a solution. It remains blue. What is the nature ofthe solution? Explain.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#Question_11Consider_the_following_statements\" >Question 11.Consider the following statements:<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#NCERT_solutions_for_Class_7_Science\" >NCERT solutions for Class 7 Science<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science-acids-basis-and-salts\/#CBSE_app_for_Class_7\" >CBSE app for Class 7<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT solutions for Class 7 Science Acids, basis and salts book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 7 Science chapter wise NCERT solution for Science Book 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 Science\u00a0Acids, basis and salts\u00a0<a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-07-science\/1525\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/07_Science_Book.jpg\" alt=\"NCERT solutions for Class 7 Science Acids, basis and salts\" width=\"170\" height=\"215\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Class_7_Social_Science_Chapter_wise_Solutions\"><\/span>NCERT Class 7 Social Science Chapter wise Solutions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li>Nutrition in Plants<\/li>\n<li>Nutrition in Animals<\/li>\n<li>Fibre To Fabric<\/li>\n<li>Heat<\/li>\n<li>Acids Bases And Salts<\/li>\n<li>Physical And Chemical Changes<\/li>\n<li>Climate<\/li>\n<li>Winds Storms And Cyclones<\/li>\n<li>Soil<\/li>\n<li>Respiration In Organisms<\/li>\n<li>Transportation in Animals And Plants<\/li>\n<li>Reproduction In Plants<\/li>\n<li>Motion And Time<\/li>\n<li>Electric Current And Its Effects<\/li>\n<li>Light<\/li>\n<li>Water<\/li>\n<li>Forests: Our Lifeline<\/li>\n<li>Waste Water Story<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_solutions_for_Class_7_Science_Acids_basis_and_salts\"><\/span>NCERT solutions for Class 7 Science Acids, basis and salts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"Class%E2%80%93VII_CHAPTER-05\"><\/span><strong>Class\u2013VII (CHAPTER-05) <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6 style=\"text-align: center;\"><span class=\"ez-toc-section\" id=\"ACIDS_BASES_AND_SALTS\"><\/span><strong>ACIDS, BASES AND SALTS<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<h6><span class=\"ez-toc-section\" id=\"Question_1State_differences_between_acids_and_bases\"><\/span><strong>Question <\/strong>1.State differences between acids and bases.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Acids are sour and turn blue litmus red. Bases are bitter and turn red litmus blue.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_2Ammonium_is_found_in_many_household_products_such_as_window_cleaners_Itturns_red_litmus_blue_What_is_its_nature\"><\/span><strong>Question <\/strong>2.Ammonium is found in many household products, such as window cleaners. Itturns red litmus blue. What is its nature?<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Basic<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Acids, basis and salts<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_3Name_the_source_from_which_litmus_solution_is_obtained_What_is_the_use_of_thissolution\"><\/span><strong>Question <\/strong>3.Name the source from which litmus solution is obtained. What is the use of thissolution?<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Lichens. It is used as indicator.<\/p>\n<hr \/>\n<p><strong>Question <\/strong>4.Is the distilled water acidic\/basic\/neutral? How would you verify it?<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>Distilled water is neutral.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_5Describe_the_process_of_neutralization_with_the_help_of_an_example\"><\/span><strong>Question <\/strong>5.Describe the process of neutralization with the help of an example.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>The reaction between an acid and a base is known as neutralization. Salts and water are produced in this process with the evolution of heat.<\/p>\n<p>Acids + Bases -\u00e0 Salt + water<\/p>\n<p>HCl + NaOH\u00e0NaCl + H2O.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Acids, basis and salts<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_6Mark_%E2%80%98T_if_the_statement_is_true_and_%E2%80%98F_if_it_is_false\"><\/span><strong>Question <\/strong>6.Mark \u2018T\u2019 if the statement is true and \u2018F\u2019 if it is false.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(i) Nitric acid turns blue litmus red. (T\/F)<\/p>\n<p>(ii) Sodium hydroxide turns blue litmus red. (T\/F)<\/p>\n<p>(iii) Sodium hydroxide and hydrochloric acid neutralize each other and forms salts andwater. (T\/F)<\/p>\n<p>(iv) Indicator is a substance which shows different colours in acidic and basic solutions. (T\/F)<\/p>\n<p>(v) Tooth decay is caused by the presence of a base. (T\/F)<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>(i) F<\/p>\n<p>(ii) F<\/p>\n<p>(iii) T<\/p>\n<p>(iv) T<\/p>\n<p>(v) F<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_7Dorji_has_a_few_bottles_of_soft_drink_in_his_restaurant_but_unfortunately_theseare_not_labelled_He_has_to_serve_the_drinks_on_the_demand_of_customers_One_customerwants_acidic_drink_another_wants_basic_and_third_one_wants_neutral_drink_How_will_Dorjidecide_which_drink_it_to_be_served_to_whom\"><\/span><strong>Question <\/strong>7.Dorji has a few bottles of soft drink in his restaurant, but, unfortunately theseare not labelled. He has to serve the drinks on the demand of customers. One customerwants acidic drink; another wants basic and third one wants neutral drink. How will Dorjidecide which drink it to be served to whom?<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>He can decide by the use of indicator. If the sample of drink turns red litmus blue, it isbasic. If it does not turn blue litmus red, it is acidic. If it does not affect litmus, it is neutral.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_8Explain_why\"><\/span><strong>Question <\/strong>8.Explain why:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(a) An antacid tablet is taken when you suffer from acidity.<\/p>\n<p>(b) Calamine solution is applied on the skin when ant bites.<\/p>\n<p>(c) Factory waste is neutralized before disposing it into the water bodies.<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>(a) Antacids are nothing but bases. When there is excess of acid in stomach, antacids aretaken. Antacids neutralize the acids and relieve us.<\/p>\n<p>(b) Ant injects an acid during bite which causes the burning sensation. Calamine solution isbasic in nature. It neutralizes the acid and relieves from the pain.<\/p>\n<p>(c) Factory wastes contain both acidic and basic substances. These are harmful for theorganisms living in water. So, these are neutralized.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Acids, basis and salts<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_9Three_liquids_are_given_to_you_One_is_hydrochloric_acid_another_is_sodiumhydroxide_and_third_is_a_sugar_solution_How_will_you_identify_them_You_have_onlyturmeric_indicator\"><\/span><strong>Question <\/strong>9.Three liquids are given to you. One is hydrochloric acid, another is sodiumhydroxide and third is a sugar solution. How will you identify them? You have onlyturmeric indicator.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>Turmeric solution turns red in contact with bases. It is not affected by acids and neutralsubstances.<\/p>\n<p>At first we will identify the base.<\/p>\n<p>The base is taken and turmeric is added. It will turn red. Then, one of the solution is added to it gradually. If the solution turns yellow again, the added liquid is Hydrochloric acid. Otherwise the added liquid is sugar solution.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"Question_10Blue_litmus_paper_is_dipped_in_a_solution_It_remains_blue_What_is_the_nature_ofthe_solution_Explain\"><\/span><strong>Question <\/strong>10.Blue litmus paper is dipped in a solution. It remains blue. What is the nature ofthe solution? Explain.<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Answer:<\/strong><\/p>\n<p>The solution may be neutral or basic. Both types of substance have no effect on blue litmus.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT solutions for Class 7 Science Acids, basis and salts<\/p>\n<h6><span class=\"ez-toc-section\" id=\"Question_11Consider_the_following_statements\"><\/span><strong>Question <\/strong>11.Consider the following statements:<span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p>(a) Both acids and bases change colour at all indicators.<\/p>\n<p>(b) If an indicator gives a colour change with an acid, it does not give a change with abase.<\/p>\n<p>(c) If an indicator changes colour with a base, it does not change colour with an acid.<\/p>\n<p>(d) Change of colour in an acid and a base depends on the type of the indicator.<\/p>\n<p>Which of these statements are correct?<\/p>\n<p>(i)All four<\/p>\n<p>(ii) a and b<\/p>\n<p>(iii) b and c<\/p>\n<p>(iv) only d.<\/p>\n<p><strong>Answer:<\/strong><\/p>\n<p>(iv) only d.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_solutions_for_Class_7_Science\"><\/span>NCERT solutions for Class 7 Science<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 7 Science PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 7 Science includes text book solutions for CBSE Class 7 Science have total 18 chapters. 7 Science NCERT Solutions in PDF for free Download on our website. Ncert Science class 7 solutions PDF and Social Science ncert class 7 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_Class_7\"><\/span>CBSE app for Class 7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download\u00a0NCERT Solutions for class 7 Social Science, Computer 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 7 Science Acids, basis and salts book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. 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