{"id":4046,"date":"2016-05-06T11:49:00","date_gmt":"2016-05-06T06:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/"},"modified":"2023-03-22T16:48:15","modified_gmt":"2023-03-22T11:18:15","slug":"ncert-solutions-for-class-10-science-metals-and-non-metals-part-2","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/","title":{"rendered":"NCERT Solutions for Class 10 Science Metals and Non-metals 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-metals-and-non-metals-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-metals-and-non-metals-part-2\/#NCERT_Solutions_for_Class_10_Science_Metals_and_Non-metals_Part_2\" >NCERT Solutions for Class 10 Science Metals and Non-metals 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-metals-and-non-metals-part-2\/#1_Which_of_the_following_pairs_will_give_displacement_reactions\" >1. Which of the following pairs will give displacement reactions?<\/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-10-science-metals-and-non-metals-part-2\/#2_Which_of_the_following_method_is_suitable_for_preventing_an_iron_fry_pan_from_rusting\" >2. Which of the following method is suitable for preventing an iron fry pan from rusting?<\/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-10-science-metals-and-non-metals-part-2\/#3_An_element_reacts_with_oxygen_to_give_a_compound_with_a_high_melting_point_This_compound_is_also_soluble_in_water_The_element_is_likely_to_be\" >3. An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be<\/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-10-science-metals-and-non-metals-part-2\/#4_Food_cans_are_coated_with_tin_and_not_zinc_because\" >4. Food cans are coated with tin and not zinc because<\/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-10-science-metals-and-non-metals-part-2\/#5_You_are_given_a_hammer_a_battery_a_bulb_wires_and_switch\" >5. You are given a hammer, a battery, a bulb, wires and switch.<\/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-10-science-metals-and-non-metals-part-2\/#6_What_are_amphoteric_oxides_Give_two_examples_of_amphoteric_oxides\" >6. What are amphoteric oxides? Give two examples of amphoteric oxides.<\/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-10-science-metals-and-non-metals-part-2\/#7_Name_two_metals_which_will_displace_hydrogen_from_dilute_acids_and_two_metals_which_will_not\" >7. Name two metals which will displace hydrogen from dilute acids, and two metals which will not.<\/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-10-science-metals-and-non-metals-part-2\/#8_In_the_electrolytic_refining_of_a_metal_M_what_would_you_take_as_the_anode_the_cathode_and_the_electrolyte\" >8. In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?<\/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-10-science-metals-and-non-metals-part-2\/#9_Pratyush_took_Sulpher_powder_on_spatula_and_heated_it_He_collected_the_gas_evolved_by_inverting_a_test_tube_over_it_as_shown_in_fig_312_below\" >9. Pratyush took Sulpher powder on spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in fig. 3.12 below:\u00a0<\/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-10-science-metals-and-non-metals-part-2\/#10_State_two_ways_to_prevent_the_rusting_of_iron\" >10. State two ways to prevent the rusting of iron.<\/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-10-science-metals-and-non-metals-part-2\/#11_What_types_of_oxides_are_formed_when_non-metals_combine_with_oxygen\" >11. What types of oxides are formed when non-metals combine with oxygen?<\/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-10-science-metals-and-non-metals-part-2\/#12_Give_reasons\" >12. Give reasons:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/#13_You_must_have_seen_tarnished_copper_vessels_being_cleaned_with_lemon_or_tamarind_juice_Explain_why_these_sour_substances_are_effective_in_cleaning_the_vessels\" >13. You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.\u00a0\u00a0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/#14_Differentiate_between_metal_and_non-metal_on_the_basis_of_their_chemical_properties\" >14. Differentiate between metal and non-metal on the basis of their chemical properties.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/#15_A_man_went_door_to_door_posing_as_a_goldsmith_He_promised_to_bring_back_the_glitter_of_the_old_and_dull_ornaments_An_unsuspecting_lady_gave_a_set_of_gold_bangles_to_him_which_he_dipped_in_a_particular_solution_The_bangles_sparkled_like_new_but_their_weight_was_reduced_drastically_The_lady_was_upset_but_after_a_futile_argument_the_man_beat_a_hasty_retreat_Can_you_play_the_detective_to_find_out_the_nature_of_the_solution_he_had_used\" >15. A man went door to door posing as a goldsmith. He promised to bring back the glitter of the old and dull ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/#16_Give_reasons_why_copper_is_used_to_make_hot_water_tanks_and_not_steel_an_alloy_of_iron\" >16. Give reasons, why copper is used to make hot water tanks and not steel (an alloy of iron).<\/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-19\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-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-20\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/#CBSE_app_for_Students\" >CBSE app for Students<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 10 Science Metals and Non-metals 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\u00a0Metals and Non-metals <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=\"aligncenter\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/10%20Science%20Book.jpg\" alt=\"NCERT Solutions for Class 10 Science Metals and Non-metals Part 2\" width=\"176\" height=\"216\" \/><\/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<ul>\n<li>1 \u2013 Chemical Reactions and Equations<\/li>\n<li>2 \u2013 Acids, Bases and Salts<\/li>\n<li>3 \u2013 Metals and Non-metals<\/li>\n<li>4 \u2013 Carbon and Its Compounds<\/li>\n<li>5 \u2013 Periodic Classification of Elements<\/li>\n<li>6 \u2013 Life Processes<\/li>\n<li>7 \u2013 Control and Coordination<\/li>\n<li>8 \u2013 How do Organisms Reproduce?<\/li>\n<li>9 \u2013 Heredity and Evolution<\/li>\n<li>10 \u2013 Light Reflection and Refraction<\/li>\n<li>11 \u2013 Human Eye and Colourful World<\/li>\n<li>12 \u2013 Electricity<\/li>\n<li>13 \u2013 Magnetic Effects of Electric Current<\/li>\n<li>14 \u2013 Sources of Energy<\/li>\n<li>15 \u2013 Our Environment<\/li>\n<li>16 \u2013 Management of Natural Resources<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_10_Science_Metals_and_Non-metals_Part_2\"><\/span>NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6><span class=\"ez-toc-section\" id=\"1_Which_of_the_following_pairs_will_give_displacement_reactions\"><\/span><strong>1. Which of the following pairs will give displacement reactions?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) NaCl solution and copper metal<\/strong><\/p>\n<p><strong>(b) MgCl<sub>2 <\/sub>solution and aluminum<\/strong><\/p>\n<p><strong>(c) FeSO<sub>4<\/sub> solution and silver metal<\/strong><\/p>\n<p><strong>(d) AgNO<sub>3<\/sub> solution and copper<\/strong><\/p>\n<p><strong>Ans. (d)<\/strong> AgNO<sub>3<\/sub> solution and copper<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"2_Which_of_the_following_method_is_suitable_for_preventing_an_iron_fry_pan_from_rusting\"><\/span><strong>2. Which of the following method is suitable for preventing an iron fry pan from rusting?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) Applying grease<\/strong><\/p>\n<p><strong>(b) applying paint<\/strong><\/p>\n<p><strong>(c) Applying coating of zinc<\/strong><\/p>\n<p><strong>(d) All of the above<\/strong><\/p>\n<p><strong>Ans. (c)<\/strong> Applying coating of zinc<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"3_An_element_reacts_with_oxygen_to_give_a_compound_with_a_high_melting_point_This_compound_is_also_soluble_in_water_The_element_is_likely_to_be\"><\/span><strong>3. An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) Calcium<\/strong><\/p>\n<p><strong>(b) Carbon<\/strong><\/p>\n<p><strong>(c) Silicon<\/strong><\/p>\n<p><strong>(d) Iron<\/strong><\/p>\n<p><strong>Ans. (a) <\/strong>Calcium<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"4_Food_cans_are_coated_with_tin_and_not_zinc_because\"><\/span><strong>4. Food cans are coated with tin and not zinc because<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) Zinc is costlier than tin<\/strong><\/p>\n<p><strong>(b) Zinc has higher melting point<\/strong><\/p>\n<p><strong>(c) Zinc is more reactive than tin<\/strong><\/p>\n<p><strong>(d) Zinc is less reactive than tin<\/strong><\/p>\n<p><strong>Ans. (c)<\/strong> Zinc is more reactive than tin<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"5_You_are_given_a_hammer_a_battery_a_bulb_wires_and_switch\"><\/span><strong>5. You are given a hammer, a battery, a bulb, wires and switch.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) How could you use them to distinguish between samples of metals and non-metals?<\/strong><\/p>\n<p><strong>(b) Asses the usefulness of these tests in distinguishing between metals and non-metals?<\/strong><\/p>\n<p><strong>Ans. (a)<\/strong> Place the sample on an iron block. Strike with hammer. If the sample takes the shape of a sheet, it is a metal. If it breaks into pieces, it is a non-metal.<\/p>\n<p>Set up the arrangement by using a bulb, a battery, wires and switch. Insert the samples of metals and non-metals in the clips one by one and turn the switch on. If the bulb glows, the sample is a metal, if not, then the sample is non-metal.<\/p>\n<p><img decoding=\"async\" style=\"height: 144px; width: 288px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch03\/image009.png\" \/><\/p>\n<p><strong>(b)<\/strong>The above two methods can, in general, be used to distinguish between metals and non-metals.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"6_What_are_amphoteric_oxides_Give_two_examples_of_amphoteric_oxides\"><\/span><strong>6. What are amphoteric oxides? Give two examples of amphoteric oxides.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Metal oxides which show both acidic as well as basic behavior are called amphoteric oxides. Such metal oxides react with both acids and bases.<\/p>\n<p>Example: Aluminum oxide, zinc oxide<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"7_Name_two_metals_which_will_displace_hydrogen_from_dilute_acids_and_two_metals_which_will_not\"><\/span><strong>7. Name two metals which will displace hydrogen from dilute acids, and two metals which will not. <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Magnesium and zinc metals displace hydrogen from dilute acids. Copper and silver do not displace hydrogen from dilute acids.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"8_In_the_electrolytic_refining_of_a_metal_M_what_would_you_take_as_the_anode_the_cathode_and_the_electrolyte\"><\/span><strong>8. In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Impure metal M is made the anode, thin strips of pure metal M as cathode and a salt solution of metal M as electrolyte.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"9_Pratyush_took_Sulpher_powder_on_spatula_and_heated_it_He_collected_the_gas_evolved_by_inverting_a_test_tube_over_it_as_shown_in_fig_312_below\"><\/span><strong>9. Pratyush took Sulpher powder on spatula and heated it. He collected the gas evolved by inverting a test tube over it as shown in fig. 3.12 below:\u00a0 <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) What will be the action of gas on<\/strong><\/p>\n<p><strong>(i) Dry litmus paper?\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/p>\n<p><strong>(ii) Moist litmus paper?<\/strong><\/p>\n<p><strong>(b)Write a balanced chemical equation for the reaction taking place.<\/strong><\/p>\n<p><strong>Ans. (a)<\/strong> Sulphur is a non-metal. Oxides of non-metals are acidic. In this case sulphur dioxide is produced which is acidic.<\/p>\n<p><strong>(i) <\/strong>No action of the gas<\/p>\n<p><strong>(ii)<\/strong> wet litmus paper will turn red.<\/p>\n<p><strong>(b)<\/strong> <img decoding=\"async\" style=\"height: 27px; width: 193px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/10\/science\/ch03\/image010.png\" \/><\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"10_State_two_ways_to_prevent_the_rusting_of_iron\"><\/span><strong>10. State two ways to prevent the rusting of iron.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Rusting of iron can be prevented by<\/p>\n<p><strong>(i)<\/strong> By applying grease or paint.<\/p>\n<p><strong>(ii)<\/strong> By galvanizing<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"11_What_types_of_oxides_are_formed_when_non-metals_combine_with_oxygen\"><\/span><strong>11. What types of oxides are formed when non-metals combine with oxygen?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Acidic oxides are formed when non-metals combine with oxygen.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"12_Give_reasons\"><\/span><strong>12. Give reasons:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) Platinum, gold and silver are used to make jewellery.<\/strong><\/p>\n<p><strong>(b) Sodium, potassium and lithium are stored under oil.<\/strong><\/p>\n<p><strong>(c) Aluminum is highly reactive metal, yet it is used to make utensils for cooking.<\/strong><\/p>\n<p><strong>(d) Carbonate and sulphides ores are usually converted into oxides during the process of extraction.<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. (a)<\/strong> These metals are un-reactive. They do not react with oxygen and other gases present in air and with moisture. Thus, their shine is maintained. That is why these metals are used to make jewellery.<\/p>\n<p style=\"text-align: justify;\"><strong>(b)<\/strong> Reaction of sodium, potassium and lithium with oxygen is so violent that they catch fire. To prevent accidental fire, they are stored under kerosene oil.<\/p>\n<p style=\"text-align: justify;\"><strong>(c)<\/strong> This is because aluminum is a good conductor of heat. Aluminum forms a layer of aluminum oxide at high temperature which is prevent the further corrosion.<\/p>\n<p style=\"text-align: justify;\"><strong>(d)<\/strong> It is easier to reduce oxide than the carbonates and sulphide to the metals.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"13_You_must_have_seen_tarnished_copper_vessels_being_cleaned_with_lemon_or_tamarind_juice_Explain_why_these_sour_substances_are_effective_in_cleaning_the_vessels\"><\/span><strong>13. You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.\u00a0\u00a0 <\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Copper, on keeping in air reacts with atmospheric carbon dioxide to form a green layer of copper carbonate. Copper carbonate reacts with citric acid present in lemon or tartaric acid present in tamarind to form soluble copper citrate or copper tartarate. The vessels are thus cleaned using water.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"14_Differentiate_between_metal_and_non-metal_on_the_basis_of_their_chemical_properties\"><\/span><strong>14. Differentiate between metal and non-metal on the basis of their chemical properties.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Metals and non-metals can be differentiated on the basis of following chemical properties.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"15_A_man_went_door_to_door_posing_as_a_goldsmith_He_promised_to_bring_back_the_glitter_of_the_old_and_dull_ornaments_An_unsuspecting_lady_gave_a_set_of_gold_bangles_to_him_which_he_dipped_in_a_particular_solution_The_bangles_sparkled_like_new_but_their_weight_was_reduced_drastically_The_lady_was_upset_but_after_a_futile_argument_the_man_beat_a_hasty_retreat_Can_you_play_the_detective_to_find_out_the_nature_of_the_solution_he_had_used\"><\/span><strong>15. A man went door to door posing as a goldsmith. He promised to bring back the glitter of the old and dull ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>Aqua regia, which is a mixture of 3 parts concentrated HCl and part of concentrated nitric acid dissolves gold. The man put the gold bangles in this solution. The outer \u00a0\u00a0\u00a0\u00a0 dirty layer of gold bangles dissolved in aqua regia bring out the shining bangles.<\/p>\n<p style=\"text-align: justify;\">As the outer layer of bangles dissolved in aqua regia, the weight was reduced drastically.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"16_Give_reasons_why_copper_is_used_to_make_hot_water_tanks_and_not_steel_an_alloy_of_iron\"><\/span><strong>16. Give reasons, why copper is used to make hot water tanks and not steel (an alloy of iron).<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans.<\/strong> Electrical conductivity of a metal is decreased when it is alloyed with another metal or non-metal. Thus, the electrical conductivity of steel is much less than that of pure. That is why copper is used to make hot water tanks and not steel.<\/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 Metals and Non-metals 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 &#8230; <a title=\"NCERT Solutions for Class 10 Science Metals and Non-metals Part 2\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science-metals-and-non-metals-part-2\/\" aria-label=\"More on NCERT Solutions for Class 10 Science Metals and Non-metals Part 2\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":30039,"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-4046","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>NCERT Solutions for Class 10 Science Metals and Non-metals Part 2<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for Class 10 Science Metals and Non-metals Part 2 in PDF format for free download. 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