{"id":4125,"date":"2016-05-06T11:49:00","date_gmt":"2016-05-06T11:49:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-matter-in-our-surroundings-part-2\/"},"modified":"2018-06-07T14:34:49","modified_gmt":"2018-06-07T09:04:49","slug":"ncert-solutions-for-class-9-science-matter-in-our-surroundings-part-2","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-matter-in-our-surroundings-part-2\/","title":{"rendered":"NCERT Solutions for Class 9 Science Matter in our Surroundings 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-9-science-matter-in-our-surroundings-part-2\/#NCERT_Class_9_Science_Chapter_wise_Solutions\" >NCERT Class 9 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-9-science-matter-in-our-surroundings-part-2\/#NCERT_Solutions_for_Class_9_Science_Matter_in_our_Surroundings_part_2\" >NCERT Solutions for Class 9 Science Matter in our Surroundings 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-9-science-matter-in-our-surroundings-part-2\/#1_Convert_the_following_temperatures_to_the_celsius_scale\" >1. Convert the following temperatures to the celsius scale.<\/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-9-science-matter-in-our-surroundings-part-2\/#2_Convert_the_following_temperatures_to_the_Kelvin_scale\" >2. Convert the following temperatures to the Kelvin scale.<\/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-9-science-matter-in-our-surroundings-part-2\/#3_Give_reason_for_the_following_observations\" >3. Give reason for the following observations.<\/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-9-science-matter-in-our-surroundings-part-2\/#4_Arrange_the_following_substances_in_increasing_order_of_forces_of_attraction_between_the_particles%E2%80%94_water_sugar_oxygen\" >4. Arrange the following substances in increasing order of forces of attraction between the particles\u2014 water, sugar, oxygen.<\/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-9-science-matter-in-our-surroundings-part-2\/#5_What_is_the_physical_state_of_water_at%E2%80%94\" >5. What is the physical state of water at\u2014<\/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-9-science-matter-in-our-surroundings-part-2\/#6_Give_two_reasons_to_justify%E2%80%94\" >6. Give two reasons to justify\u2014<\/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-9-science-matter-in-our-surroundings-part-2\/#7_Why_is_ice_at_273_K_more_effective_in_cooling_than_water_at_the_same_temperature\" >7. Why is ice at 273 K more effective in cooling than water at the same temperature?<\/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-9-science-matter-in-our-surroundings-part-2\/#8_What_produces_more_severe_burns_boiling_water_or_steam\" >8. What produces more severe burns, boiling water or steam?<\/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-9-science-matter-in-our-surroundings-part-2\/#9_Name_A_B_C_D_E_and_F_in_the_following_diagram_showing_change_in_its_state\" >9. Name A, B, C, D, E and F in the following diagram showing change in its state.<\/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-12\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-matter-in-our-surroundings-part-2\/#NCERT_Solutions_for_Class_9_Science\" >NCERT Solutions for Class 9 Science<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-matter-in-our-surroundings-part-2\/#CBSE_app_for_Class_9\" >CBSE app for Class 9<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 9 Science Matter in our Surroundings part 2 Class 9 Science 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 9 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 Science\u00a0Matter in our Surroundings <a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-09-science\/1218\/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\/09_Science_Book.jpg\" alt=\"NCERT Solutions for Class 9 Science Matter in our Surroundings part 2\" width=\"166\" height=\"223\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Class_9_Science_Chapter_wise_Solutions\"><\/span><span class=\"underline-text\">NCERT Class 9 Science Chapter wise Solutions<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>01 \u2013 \u00a0Matter in Our Surroundings<\/li>\n<li>02 \u2013 Is Mattter Around us Pure<\/li>\n<li>03 \u2013 Atoms and Molecules<\/li>\n<li>04 \u2013 Structure of the Atom<\/li>\n<li>05 \u2013 The Fundamental Unit of Life<\/li>\n<li>06 \u2013 Tissues<\/li>\n<li>07 \u2013 Diversity in Living Organisms<\/li>\n<li>08 \u2013 Motion<\/li>\n<li>09 \u2013 Force and Laws of Motion<\/li>\n<li>10 \u2013 Gravitation<\/li>\n<li>11 \u2013 Word and Energy<\/li>\n<li>12 \u2013 Sound<\/li>\n<li>13 \u2013 Why Do We Fall Ill<\/li>\n<li>14 \u2013 Natural Resources<\/li>\n<li>15 \u2013 Improvement in Food Resources<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_9_Science_Matter_in_our_Surroundings_part_2\"><\/span>NCERT Solutions for Class 9 Science Matter in our Surroundings part 2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6><span class=\"ez-toc-section\" id=\"1_Convert_the_following_temperatures_to_the_celsius_scale\"><\/span><strong>1. Convert the following temperatures to the celsius scale.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) 293 K (b) 470 K.<\/strong><\/p>\n<p><strong>Ans. <\/strong>a) <img decoding=\"async\" style=\"height: 19px; width: 166px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image009.png\" \/><img decoding=\"async\" style=\"height: 19px; width: 51px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image010.png\" \/><\/p>\n<p>b) <img decoding=\"async\" style=\"height: 19px; width: 167px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image011.png\" \/><img decoding=\"async\" style=\"height: 19px; width: 57px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image012.png\" \/><\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"2_Convert_the_following_temperatures_to_the_Kelvin_scale\"><\/span><strong>2. Convert the following temperatures to the Kelvin scale.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a)<img decoding=\"async\" style=\"height: 19px; width: 39px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image013.png\" \/>(b)<img decoding=\"async\" style=\"height: 19px; width: 47px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image014.png\" \/>.<\/strong><\/p>\n<p><strong>Ans. a) <\/strong><img decoding=\"async\" style=\"height: 19px; width: 105px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image015.png\" \/>= 25 + 273 = 298 K<\/p>\n<p><strong>b)<\/strong> <img decoding=\"async\" style=\"height: 19px; width: 105px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image015.png\" \/>= 373 + 273 = 656 K<\/p>\n<hr \/>\n<p>NCERT Solutions for Class 9 Science Matter in our Surroundings part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"3_Give_reason_for_the_following_observations\"><\/span><strong>3. Give reason for the following observations.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) Naphthalene balls disappear with time without leaving any solid.<\/strong><\/p>\n<p><strong>(b) We can get the smell of perfume sitting several metres away.<\/strong><\/p>\n<p><strong>Ans. a)<\/strong> Some substances possess the property of sublimation like camphor and naphthalene balls. Such substances directly change from solid to gaseous state without changing into liquid like ice\u2192 water\u2192 water vapour does. Therefore, naphthalene balls disappear with time without leaving any solid.<\/p>\n<p><strong>b)<\/strong> Being a volatile substance (gets evaporated easily) perfumes change from liquid to gaseous state very fast. Those particles mix up with air particles and diffuse to reach our nostrils such that we get the smell of perfume sitting several metres away.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Science Matter in our Surroundings part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"4_Arrange_the_following_substances_in_increasing_order_of_forces_of_attraction_between_the_particles%E2%80%94_water_sugar_oxygen\"><\/span><strong>4. Arrange the following substances in increasing order of forces of attraction between the particles\u2014 water, sugar, oxygen.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>Oxygen &lt; water&lt; sugar.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"5_What_is_the_physical_state_of_water_at%E2%80%94\"><\/span><strong>5. What is the physical state of water at\u2014<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a)<img decoding=\"async\" style=\"height: 19px; width: 39px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image013.png\" \/>(b)<img decoding=\"async\" style=\"height: 19px; width: 31px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image016.png\" \/>(c)<img decoding=\"async\" style=\"height: 19px; width: 45px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image007.png\" \/>?<\/strong><\/p>\n<p><strong>Ans. <\/strong>At <img decoding=\"async\" style=\"height: 19px; width: 39px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image017.png\" \/>water is liquid, at <img decoding=\"async\" style=\"height: 19px; width: 31px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image018.png\" \/>water is solid(ice), at <img decoding=\"async\" style=\"height: 19px; width: 45px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image008.png\" \/>water is gas(water vapour).<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Science Matter in our Surroundings part 2<\/p>\n<h6><span class=\"ez-toc-section\" id=\"6_Give_two_reasons_to_justify%E2%80%94\"><\/span><strong>6. Give two reasons to justify\u2014<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>(a) water at room temperature is a liquid.<\/strong><\/p>\n<p><strong>(b) an iron almirah is a solid at room temperature.<\/strong><\/p>\n<p><strong>Ans. a)<\/strong> The room temperature is generally always more than <img decoding=\"async\" style=\"height: 19px; width: 31px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image018.png\" \/>and less than <img decoding=\"async\" style=\"height: 19px; width: 45px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image008.png\" \/>and within this range water is a liquid so water at room temperature is a liquid.<\/p>\n<p><strong>b) <\/strong>The melting point of iron is much higher than the room temperature therefore an iron almirah is a solid at room temperature.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"7_Why_is_ice_at_273_K_more_effective_in_cooling_than_water_at_the_same_temperature\"><\/span><strong>7. Why is ice at 273 K more effective in cooling than water at the same temperature?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>While melting ice absorbs latent heat of melting from the surroundings and gets changed into water that makes the cooling effect more intense as compared to water at same temperature.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"8_What_produces_more_severe_burns_boiling_water_or_steam\"><\/span><strong>8. What produces more severe burns, boiling water or steam?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong>Ans. <\/strong>As compared to boiling water it is observed that steam produces more severe burns since as the steam changes into boiling water it releases heat of condensation which is equivalent to latent heat of water result is more severe burning.<\/p>\n<hr \/>\n<h6><span class=\"ez-toc-section\" id=\"9_Name_A_B_C_D_E_and_F_in_the_following_diagram_showing_change_in_its_state\"><\/span><strong>9. Name A, B, C, D, E and F in the following diagram showing change in its state.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p><strong><img decoding=\"async\" id=\"Picture 1\" style=\"height: 157px; width: 397px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/science\/ch01\/image019.png\" alt=\"states of matter\" \/><\/strong><\/p>\n<p><strong>Ans. <\/strong>A \u2013 Fusion (Heating \u2013 Melting)<\/p>\n<p>B \u2013 Vaporisation<\/p>\n<p>C \u2013 Cooling \u2013 Condensation (Liquefaction)<\/p>\n<p>D \u2013 Cooling \u2013 Freezing (Solidification)<\/p>\n<p>E \u2013 Sublimation<\/p>\n<p>F \u2013 Solidification<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_9_Science\"><\/span>NCERT Solutions for Class 9 Science<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 9 Science PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 9 Science includes text book solutions .NCERT Solutions for CBSE Class 9 Science have total 15 chapters. 9 Science NCERT Solutions in PDF for free Download on our website. Ncert Science class 9 solutions PDF and Science ncert class 9 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_9\"><\/span>CBSE app for Class 9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download\u00a0NCERT Solutions for class 9 Science, Computer Science, Home Science,Hindi ,English, Maths Social 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 9 Science Matter in our Surroundings part 2 Class 9 Science 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 &#8230; <a title=\"NCERT Solutions for Class 9 Science Matter in our Surroundings part 2\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science-matter-in-our-surroundings-part-2\/\" aria-label=\"More on NCERT Solutions for Class 9 Science Matter in our Surroundings part 2\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":-1,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[281,1377],"tags":[283,1344,216,349],"class_list":["post-4125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ncert-solutions","category-science-cbse-class-09","tag-cbse-study-material","tag-class-9","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 9 Science Matter in our Surroundings part 2<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for Class 9 Science Matter in our Surroundings part 2 in PDF format for free download. 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