{"id":4951,"date":"2023-03-13T13:24:41","date_gmt":"2023-03-13T13:24:41","guid":{"rendered":"https:\/\/theexampillar.com\/ncert\/?p=4951"},"modified":"2023-03-28T06:12:36","modified_gmt":"2023-03-28T06:12:36","slug":"ncert-solutions-class-9-science-chapter-1-matter-in-our-surroundings","status":"publish","type":"post","link":"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-9-science-chapter-1-matter-in-our-surroundings\/","title":{"rendered":"NCERT Solutions Class 9 Science Chapter 1 Matter in Our Surroundings"},"content":{"rendered":"<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">NCERT Solutions Class 9 Science\u00a0<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">The NCERT Solutions in English Language for Class 9 Science <strong>Chapter &#8211; 1 (Matter in Our Surroundings) <\/strong>has been provided here to help the students in solving the questions from this exercise.<\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">Chapter &#8211; 1 (Matter in Our Surroundings)<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #ff0000;\"><strong>Questions <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. Which of the following are matter?<br \/>\n<\/strong><strong>Chair, air, love, smell, hate, almonds, thought, cold, lemon water, the smell of perfume<\/strong>.<br \/>\n<strong>Answer &#8211;<\/strong> \u00a0The following substances are matter:<br \/>\nChair, Air,\u00a0Almonds,\u00a0Lemon water and The smell of perfume.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. Give reasons for the following observation:<br \/>\n<\/strong><strong>The smell of hot sizzling food reaches you several meters away, but to get the smell from cold\u00a0<\/strong><strong>food, you have to go close.<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>The smell of hot sizzling food reaches you several meters away, but to get the smell from cold food, we have to go close because the kinetic energy of particles of matter increases with the increase in temperature<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3. A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>The diver is able to easily cut through the water in the swimming pool because of the weak forces of attraction between water molecules. It is this property of water that attributes to easy diving.<br \/>\n<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. What are the characteristics of the particles of matter?<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> \u00a0The characteristics of particles of matter are as follows:<\/span><\/p>\n<ul>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">Presence of intermolecular spaces between particles.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">Particles are in constant motion.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">They attract each other.<\/span><\/li>\n<li style=\"text-align: justify;\"><span style=\"color: #000000;\">All matter is composed of very small particles which can exist independently.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong><span style=\"color: #ff0000;\">Questions<\/span> <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. The mass per unit volume of a substance is called density.<br \/>\n(density=mass\/volume).<br \/>\nArrange the following in the order of increasing density \u2013 air, exhaust from the chimneys, honey, water, chalk, cotton and iron.<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> \u00a0The following substances are arranged in increasing density:<br \/>\nAir, Exhaust from chimney,\u00a0Cotton,\u00a0Water,\u00a0Honey,\u00a0Chalk and\u00a0Iron.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. Answer the following.<br \/>\n<\/strong><strong>(a) Tabulate the differences in the characteristics of matter.<br \/>\n<\/strong><strong>Answer &#8211; <\/strong>The difference in the characteristics of the three states of matter.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><span style=\"color: #000000;\"><b>Property<\/b><\/span><\/td>\n<td><span style=\"color: #000000;\"><b>Solid State<\/b><\/span><\/td>\n<td><span style=\"color: #000000;\"><b>Liquid State<\/b><\/span><\/td>\n<td><span style=\"color: #000000;\"><b>Gaseous State<\/b><\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Shape<\/span><\/td>\n<td><span style=\"color: #000000;\">They have definite shape.<\/span><\/td>\n<td><span style=\"color: #000000;\">They do not have any definite shape. Fluids achieve the shape of the containers.<\/span><\/td>\n<td><span style=\"color: #000000;\">They do not have fixed shape.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Volume<\/span><\/td>\n<td><span style=\"color: #000000;\">They have fixed volume.<\/span><\/td>\n<td><span style=\"color: #000000;\">They have fixed volume.<\/span><\/td>\n<td><span style=\"color: #000000;\">They do not have fixed volume.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Rigidity<\/span><\/td>\n<td><span style=\"color: #000000;\">They are highly rigid.<\/span><\/td>\n<td><span style=\"color: #000000;\">They are less rigid as compared to solids.<\/span><\/td>\n<td><span style=\"color: #000000;\">They are least rigid as compared to other states.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Compressibility<\/span><\/td>\n<td><span style=\"color: #000000;\">They cannot be compressed. (Exception- cotton, sponge etc.)<\/span><\/td>\n<td><span style=\"color: #000000;\">They can be compressed slightly.<\/span><\/td>\n<td><span style=\"color: #000000;\">They are highly compressible.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Fluidity<\/span><\/td>\n<td><span style=\"color: #000000;\">They do not flow.<\/span><\/td>\n<td><span style=\"color: #000000;\">They flow from a higher region to a lower region.<\/span><\/td>\n<td><span style=\"color: #000000;\">They flow in all directions.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Filling a gas container<\/span><\/td>\n<td><span style=\"color: #000000;\">Do not need a container to contain them.<\/span><\/td>\n<td><span style=\"color: #000000;\">They need a container to contain them.<\/span><\/td>\n<td><span style=\"color: #000000;\">They need a container to contain them.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Kinetic Energy\u00a0<\/span><\/td>\n<td><span style=\"color: #000000;\">It has the least kinetic energy among all.<\/span><\/td>\n<td><span style=\"color: #000000;\">It has more kinetic energy than solids.<\/span><\/td>\n<td><span style=\"color: #000000;\">Kinetic energy is maximum.<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Density<\/span><\/td>\n<td><span style=\"color: #000000;\">highest density.<\/span><\/td>\n<td><span style=\"color: #000000;\">moderate density.<\/span><\/td>\n<td><span style=\"color: #000000;\">least density.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, <\/strong><strong>shape, kinetic energy and density.<\/strong><\/span><\/p>\n<div class=\"table-responsive\" style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<\/strong><\/span><\/div>\n<ul>\n<li><span style=\"color: #000000;\"><strong>Rigidity &#8211; <\/strong>Rigidity is described as a material\u2019s tendency to resist change in shape.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>Compressibility &#8211; <\/strong>When force is applied, compressibility is described as the ability to be compressed to a smaller volume.<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>Fluidity &#8211;\u00a0<\/strong>The capacity to flow is defined as fluidity.<\/span><\/li>\n<li class=\"table-responsive\" style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Filling the gas container &#8211;\u00a0<\/strong>Filling a gas container refers to the gas taking on the shape of the container.<\/span><\/li>\n<li class=\"table-responsive\" style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Shape &#8211; <\/strong>It establishes a clear barrier.<\/span><\/li>\n<li class=\"table-responsive\" style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Kinetic energy &#8211;\u00a0<\/strong>Kinetic energy is the energy possessed by a particle as a result of its motion.<\/span><\/li>\n<li class=\"table-responsive\" style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Density &#8211; <\/strong>Density is defined as the mass per unit volume.<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\"><strong style=\"text-align: justify;\">3. Give reasons<br \/>\n<\/strong><strong>(a) A gas fills completely the vessel in which it is kept.<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> Gases have a negligible intermolecular force between the gas molecules and for this reason the gas particles randomly move in all directions and so the vessel is filled with gas.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) A gas exerts pressure on the walls of the container.<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>The moving particles in a gas collide with each other and also with the walls of the container and due to these collisions, Gases exert pressure on the walls of the container.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(c) A wooden table should be called a solid.<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>A wooden table has a definite shape and volume. It is very rigid and cannot be compressed i.e., it has the characteristics of a solid. Hence, a wooden table should be called a solid.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(d) We can easily move our hand in the air, but to do the same through a solid block of wood, we need a karate expert.<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> Molecules in the gas have a very low intermolecular attraction, but in a solid block of wood the molecules are tightly packed with strong intermolecular force, hence this happens.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. Liquids generally have a lower density than solids. But you must have observed that ice floats on water. Find out why.<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> The density of ice is less than the density of water. The low density of ice can be attributed to the small pores it has which allows it to trap air hence ice floats on water.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong><span style=\"color: #ff0000;\">Questions<\/span> <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. Convert the following temperature to Celsius scale:<br \/>\n<\/strong><strong>a. 300K<br \/>\n<\/strong><strong>b. 573K<br \/>\n<\/strong><strong>Answer &#8211;<\/strong><br \/>\n<strong>(a)<\/strong> <strong>300K<\/strong><br \/>\n0\u00b0C = 273K<br \/>\n300K= (300 &#8211; 273)\u00b0C = 27\u00b0C<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) 573K<br \/>\n<\/strong>573K = (573 &#8211; 273)\u00b0C<br \/>\n= 300\u00b0C<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. What is the physical state of water at:<br \/>\n<\/strong><strong>a. 250<\/strong>\u00b0<strong>C<br \/>\nb. 100<\/strong>\u00b0<strong>C<\/strong> <strong>?<\/strong><br \/>\n<strong>Answer &#8211;<\/strong><br \/>\n<strong>(a)<\/strong> At 250\u00b0C &#8211; Physical state of water at 250\u00b0C is gaseous state because the boiling point of water is 100\u00b0C. Therefore at a temperature higher than its boiling point. It exists as gas.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b)<\/strong> At 100\u00b0C &#8211; Both liquid and gaseous states are present. These are in a state of equilibrium. So at 100\u00b0C both liquid water and vapour are present.\u00a0\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3. For any substance, why does the temperature remain constant during the change of state?<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> The temperature remains constant during the change of state because the heat supplied during the change is used up in overcoming the intermolecular forces between the particles of the state.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. Suggest a method to liquify atmospheric gases.<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> In order to liquefy a gas, the constituent particles or molecules have to be brought closer. The atmospheric gases can be liquefied either by increasing pressure or by decreasing temperature.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong><span style=\"color: #ff0000;\">Questions<\/span> <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. Why d<\/strong><strong>oes a desert cooler cool better on a hot dry day?<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>It is because the temperature is high and less humid on a hot dry day, enabling better evaporation. High levels of this evaporation provide better cooling effects.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. How does the water kept in an earthen pot (matka) become cool during summer?<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>An earthen pot (matka) has many small pores. Water seeps out through them and evaporates from the surface of the pot. The energy needed for evaporation is taken from the water kept in the earthen pot. As a result, water kept in earthen pot becomes cool.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3.Why does our palm feel cold when we put on some acetone or petrol, or perfume on it?<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> \u00a0Both acetone and perfume are low boiling liquids. When they are poured on the palm, they evaporate readily and for this change of state they take the energy from the palm and we get a cooling sensation.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. Why are we able to sip hot tea or milk faster from a saucer rather than a cup?<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>We are able to sip hot tea faster from a saucer rather than a cup because a saucer has a greater surface area. As a result, rate of evaporation increases.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>5. What type of clothes should we wear in summer?<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>In summer, it is preferred to wear light-coloured cotton clothes because light colour reflects heat and cotton materials have pores that absorb sweat, facilitating evaporation, and hence causing a cooling effect on the skin.<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"text-decoration: underline; color: #ff0000;\"><span style=\"font-size: 14pt;\"><strong>Exercise <\/strong><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. Convert the following temperature to Celsius scale.<br \/>\n<\/strong><strong>(a) 293K<br \/>\n(b) 470K<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0<\/strong>0\u00b0C = 273K<br \/>\n<strong>(a) 293K<br \/>\n<\/strong>293K = (293 \u2013 273)\u00b0C<br \/>\n= 20\u00b0C<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) 470K<br \/>\n<\/strong>470K = (470 \u2013 273)\u00b0C<br \/>\n= 197\u00b0C<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2.Convert the following temperatures to the Kelvin scale.<br \/>\n<\/strong><strong>(a) 25\u00b0C<br \/>\n(b) 373\u00b0C <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<\/strong> 0\u00b0C = 273K<br \/>\n<strong>(a) 25\u00b0C<br \/>\n<\/strong>25\u00b0C = (25 + 273)K<br \/>\n= 298K<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) 373\u00b0C<\/strong><br \/>\n373\u00b0C = (373 + 273)K<br \/>\n= 646K<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3. Give reason for the following observations:<br \/>\n<\/strong><strong>(a) Naphthalene balls disappear with time without leaving any solid.<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>Naphthalene balls disappear with time without leaving any solid because they undergo sublimation i.e., they directly change into vapour without passing through the liquid state.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) We can get the smell of perfume while sitting several metres away.<br \/>\n<\/strong><strong>Answer &#8211; <\/strong>We can get the smell of perfume sitting several metres away due to diffusion. The perfumes contain solvent which carries pleasant smelling vapour. They diffuse quite fast and can reach a person sitting several metres away.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. Arrange the following in increasing order of forces of attraction between the particles \u2013 water, sugar, oxygen.<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>Oxygen (gas) &lt; water (liquid) &lt; sugar (solid)<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>5. What is the physical state of water at \u2013<br \/>\n<\/strong><strong>(a) 25<\/strong>\u00b0<strong>C<br \/>\n(b) 0<\/strong>\u00b0<strong>C<br \/>\n(c) 100<\/strong>\u00b0<strong>C<br \/>\n<\/strong><strong>Answer &#8211;<\/strong> <\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(a) 25<\/strong>\u00b0<strong>C &#8211; <\/strong>the water will be in liquid form (normal room temperature)<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) 0\u00b0C &#8211; <\/strong>the water is at its freezing point, hence both solid and liquid phases are observed.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(c) 100\u00b0C &#8211; <\/strong>the water is at its boiling point, hence both liquid and gaseous states of water (water vapour) are observed.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>6. Give two reasons to justify \u2013<br \/>\n<\/strong><strong>(a) Water at room temperature is a liquid.<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>Water at room temperature is a liquid because its freezing point is 0 \u00b0C and boiling point is 100 \u00b0C.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>(b) An iron almirah is a solid at room temperature.<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>An iron almirah is a solid at room temperature because melting point of iron is higher than room temperature.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>7. Why is ice at 273K more effective in cooling than water at the same temperature?<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>Ice at 273 K will absorb heat energy or latent heat from the medium to overcome the fusion to become water. Hence the cooling effect of ice is more than the water at same temperature because water does not absorb this extra heat from the medium.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>8. What produces more severe burns, boiling water or steam?<br \/>\n<\/strong><strong>Answer &#8211;\u00a0<\/strong>Steam at 100 \u00b0C will produce more severe burns as extra heat is hidden in it called latent heat whereas the boiling water does not have this hidden heat.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>9. Name A, B, C, D, E and F in the following diagram showing a change in its state.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4953\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2023\/02\/NCERT-Solutions-Class-9-Science-Ch-1-Que-9.png\" alt=\"NCERT Class 9 Solutions Maths\" width=\"502\" height=\"212\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2023\/02\/NCERT-Solutions-Class-9-Science-Ch-1-Que-9.png 502w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2023\/02\/NCERT-Solutions-Class-9-Science-Ch-1-Que-9-300x127.png 300w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2023\/02\/NCERT-Solutions-Class-9-Science-Ch-1-Que-9-480x203.png 480w\" sizes=\"auto, (max-width: 502px) 100vw, 502px\" \/><br \/>\n<\/strong><strong>Answer &#8211;<\/strong> \u00a0Interconversion of three states of matter: Using temperature or pressure, any state of matter can be turned into another.<br \/>\n<strong>(A)<\/strong> Solid to Liquid \u2192 Melting (or) fusion (or) liquefaction<br \/>\n<strong>(B)<\/strong> Liquid to Gas \u2192 Evaporation (or) vaporization<br \/>\n<strong>(C)<\/strong> Gas to liquid \u2192 Condensation<br \/>\n<strong>(D)<\/strong> Liquid to Solid \u2192 Solidification<br \/>\n<strong>(E)<\/strong> Solid to Gas \u2192 Sublimation<br \/>\n<strong>(F)<\/strong> Gas to Solid \u2192 solidification<\/span><\/p>\n<p><a href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-9-science\/\" target=\"_blank\" rel=\"noopener\"><b><i>Go Back To Chapters<\/i><\/b><\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions Class 9 Science\u00a0 The NCERT Solutions in English Language for Class 9 Science Chapter &#8211; 1 (Matter in Our Surroundings) has been provided here to help the students in solving the questions from this exercise. Chapter &#8211; 1 (Matter in Our Surroundings) Questions 1. Which of the following are matter? Chair, air, love, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[729],"tags":[730,731,732,733,5],"class_list":["post-4951","post","type-post","status-publish","format-standard","hentry","category-class-9-science","tag-class-9-ncert-solutions","tag-ncert-class-9-science-chapter-1-matter-in-our-surroundings","tag-ncert-solutions-class-9-science-chapter-1-in-english","tag-ncert-solutions-class-9-science-in-english","tag-ncert-solutions-in-english"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.9 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Solutions Class 9 Science Chapter 1 Matter in Our Surroundings | TheExamPillar NCERT<\/title>\n<meta name=\"description\" content=\"NCERT Solutions Class 9 Science\u00a0The NCERT Solutions in English Language for Class 9 Science Chapter - 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