{"id":620551,"date":"2023-03-11T03:16:44","date_gmt":"2023-03-11T03:16:44","guid":{"rendered":"https:\/\/www.indcareer.com\/schools\/?p=620551"},"modified":"2024-04-29T13:00:13","modified_gmt":"2024-04-29T13:00:13","slug":"ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules","status":"publish","type":"post","link":"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/","title":{"rendered":"NCERT Exemplar Class 9 Science\u00a0Chapter 3: Atoms And Molecules"},"content":{"rendered":"\n<p>NCERT Exemplar Class 9 Science&nbsp;Chapter 3: Atoms And Molecules. NCERT Exemplar Solutions for Class 9 Science&nbsp;Chapter 3 Atoms And Molecules prepare students for their Class 9 exams thoroughly. <\/p>\n\n\n\n<p>Science&nbsp;problems and solutions for the Class 9 pdf are provided here which are similar to the questions being asked in the previous year&#8217;s board. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ncert-exemplar-class-9-science-nbsp-chapter-3-atoms-and-molecules\"><strong>NCERT Exemplar Class 9 Science&nbsp;Chapter 3: Atoms And Molecules<\/strong><\/h2>\n\n\n\n<p>Class 9: Science&nbsp;Chapter 3 solutions. Complete Class 9 Science&nbsp;Chapter 3 Notes.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-multiple-choice-questions\"><strong>Multiple Choice Questions<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Which of the following correctly represents 360 g of water?<br>(i) 2 moles of H<sub>2<\/sub>0<br>(ii) 20 moles of water<br>(iii) 6.022 \u00d7 10<sub>23<\/sub> molecules of water<br>(iv) 1.2044\u00d710<sub>25<\/sub> molecules of water\n<ul class=\"wp-block-list\">\n<li>(a) (i)<\/li>\n\n\n\n<li>(b) (i) and (iv)<\/li>\n\n\n\n<li>(c) (ii) and (iii)<\/li>\n\n\n\n<li>(d) (ii) and (iv)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Which of the following statements is not true about an atom?\n<ul class=\"wp-block-list\">\n<li>(a) Atoms are not able to exist independently<\/li>\n\n\n\n<li>(b) Atoms are the basic units from which molecules and ions are formed<\/li>\n\n\n\n<li>(c) Atoms are always neutral in nature<\/li>\n\n\n\n<li>(d) Atoms aggregate in large numbers to form the matter that we can see, feel or touch<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>The chemical symbol for nitrogen gas is\n<ul class=\"wp-block-list\">\n<li>(a) Ni<\/li>\n\n\n\n<li>(b) N<sub>2<\/sub><\/li>\n\n\n\n<li>(c) N<sup>+<\/sup><\/li>\n\n\n\n<li>(d) N<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>The chemical symbol for sodium is\n<ul class=\"wp-block-list\">\n<li>(a) So<\/li>\n\n\n\n<li>(b) Sd<\/li>\n\n\n\n<li>(c) NA<\/li>\n\n\n\n<li>(d) Na<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Which of the following would weigh the highest?\n<ul class=\"wp-block-list\">\n<li>(a) 0.2 mole of sucrose (C<sub>12<\/sub>H<sub>22<\/sub>O<sub>11<\/sub>)<\/li>\n\n\n\n<li>(b) 2 moles of CO<sub>2<\/sub><\/li>\n\n\n\n<li>(c) 2 moles of CaCO<sub>3<\/sub><\/li>\n\n\n\n<li>(d) 10 moles of H<sub>2<\/sub>O<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Which of the following has maximum number of atoms?\n<ul class=\"wp-block-list\">\n<li>(a) 18g of H<sub>2<\/sub>O<\/li>\n\n\n\n<li>(b) 18g of O<sub>2<\/sub><\/li>\n\n\n\n<li>(c) 18g of CO<sub>2<\/sub><\/li>\n\n\n\n<li>(d) 18g of CH<sub>4<\/sub><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Which of the following contains maximum number of molecules?\n<ul class=\"wp-block-list\">\n<li>(a) 1g CO<sub>2<\/sub><\/li>\n\n\n\n<li>(b) 1g N<sub>2<\/sub><\/li>\n\n\n\n<li>(c) 1g H<sub>2<\/sub><\/li>\n\n\n\n<li>(d) 1g CH<sub>4<\/sub><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Mass of one atom of oxygen is<br><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15950446152_afcc9619c2_o.jpg\" alt=\"Class 9 Important Questions for Science - Atoms And Molecules\"><\/li>\n\n\n\n<li>3.42 g of sucrose are dissolved in 18g of water in a beaker. The number of oxygen atoms in the solution are\n<ul class=\"wp-block-list\">\n<li>(a) 6.68 \u00d7 10<sup>23<\/sup><\/li>\n\n\n\n<li>(b) 6.09 \u00d7 10<sup>22<\/sup><\/li>\n\n\n\n<li>(c) 6.022 \u00d7 10<sup>23<\/sup><\/li>\n\n\n\n<li>(d) 6.022 \u00d7 10<sup>21<\/sup><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>A change in the physical state can be brought about\n<ul class=\"wp-block-list\">\n<li>(a) only when energy is given to the system<\/li>\n\n\n\n<li>(b) only when energy is taken out from the system<\/li>\n\n\n\n<li>(c) when energy is either given to, or taken out from the system<\/li>\n\n\n\n<li>(d) without any energy change<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p><strong>Short Answer Type Questions<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Which of the following represents a correct chemical formula? Name it.\n<ul class=\"wp-block-list\">\n<li>(a) CaCl<\/li>\n\n\n\n<li>(b) BiPO<sub>4<\/sub><\/li>\n\n\n\n<li>(c) NaSO<sub>4<\/sub><\/li>\n\n\n\n<li>(d) NaS<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Write the molecular formulae for the following compounds\n<ul class=\"wp-block-list\">\n<li>(a) Copper (II) bromide<\/li>\n\n\n\n<li>(b) Aluminium (III) nitrate<\/li>\n\n\n\n<li>(c) Calcium (II) phosphate<\/li>\n\n\n\n<li>(d) Iron (III) sulphide<\/li>\n\n\n\n<li>(e) Mercury (II) chloride<\/li>\n\n\n\n<li>(f) Magnesium (II) acetate<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Write the molecular formulae of all the compounds that can be formed by the combination of following ions<br>Cu<sup>2+<\/sup>, Na<sup>+<\/sup>, Fe<sup>3+<\/sup>, C1<sup>\u2013<\/sup>, SO<sub>4<\/sub><sup>2-<\/sup>, PO<sub>4<\/sub><sup>3-<\/sup><\/li>\n\n\n\n<li>Write the cations and anions present (if any) in the following compounds\n<ul class=\"wp-block-list\">\n<li>(a) CH<sub>3<\/sub>COONa<\/li>\n\n\n\n<li>(b) NaCl<\/li>\n\n\n\n<li>(c) H<sub>2<\/sub><\/li>\n\n\n\n<li>(d) NH<sub>4<\/sub>NO<sub>3<\/sub><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Give the formulae of the compounds formed from the following sets of elements\n<ul class=\"wp-block-list\">\n<li>(a) Calcium and fluorine<\/li>\n\n\n\n<li>(b) Hydrogen and sulphur<\/li>\n\n\n\n<li>(c) Nitrogen and hydrogen<\/li>\n\n\n\n<li>(d) Carbon and chlorine<\/li>\n\n\n\n<li>(e) Sodium and oxygen<\/li>\n\n\n\n<li>(f) Carbon and oxygen<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Which of the following symbols of elements are incorrect? Give their correct symbols<br><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15331487393_fe8061a724_o.jpg\" alt=\"Class 9 Important Questions for Science - Atoms And Molecules\"><\/li>\n\n\n\n<li>Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them. (You may use appendix-III).\n<ul class=\"wp-block-list\">\n<li>(a) Ammonia<\/li>\n\n\n\n<li>(b) Carbon monoxide<\/li>\n\n\n\n<li>(c) Hydrogen chloride<\/li>\n\n\n\n<li>(d) Aluminium fluoride<\/li>\n\n\n\n<li>(e) Magnesium sulphide<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>State the number of atoms present in each of the following chemical species\n<ul class=\"wp-block-list\">\n<li>(a) CO<sub>3<\/sub><sup>2\u2013<\/sup><\/li>\n\n\n\n<li>(b) PO<sub>3<\/sub><sup>3\u2013<\/sup><\/li>\n\n\n\n<li>(c) P<sub>2<\/sub>O<sub>5<\/sub><\/li>\n\n\n\n<li>(d) CO<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>What is the fraction of the mass of water due to neutrons?<\/li>\n\n\n\n<li>Does the solubility of a substance change with temperature? Explain with the help of an example.<\/li>\n\n\n\n<li>Classify each of the following on the basis of their atomicity.\n<ul class=\"wp-block-list\">\n<li>(a) F<sub>2<\/sub><\/li>\n\n\n\n<li>(b) NO<sub>2<\/sub><\/li>\n\n\n\n<li>(c) N<sub>2<\/sub>O<\/li>\n\n\n\n<li>(d) C<sub>2<\/sub>H<sub>6<\/sub><\/li>\n\n\n\n<li>(e) P<sub>4<\/sub><\/li>\n\n\n\n<li>(f) H<sub>2<\/sub>O<sub>2<\/sub><\/li>\n\n\n\n<li>(g) P<sub>4<\/sub>O<sub>10<\/sub><\/li>\n\n\n\n<li>(H) O<sub>3<\/sub><\/li>\n\n\n\n<li>(i) HCl<\/li>\n\n\n\n<li>(j) CH<sub>4<\/sub><\/li>\n\n\n\n<li>(k) He<\/li>\n\n\n\n<li>(l) Ag<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?<\/li>\n\n\n\n<li>Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is 24g mol<sup>\u20131<\/sup>.<\/li>\n<\/ol>\n\n\n\n<p><strong>Long Answer Type Questions<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Verify by calculating that\n<ul class=\"wp-block-list\">\n<li>(a) 5 moles of CO<sub>2<\/sub> and 5 moles of H<sub>2<\/sub>O do not have the same mass.<\/li>\n\n\n\n<li>(b) 240 g of calcium and 240 g magnesium elements have a mole ratio of 3:5.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Find the ratio by mass of the combining elements in the following compounds. (You may use Appendix-III)\n<ul class=\"wp-block-list\">\n<li>(a) CaCO<sub>3<\/sub><\/li>\n\n\n\n<li>(b) MgCl<sub>2<\/sub><\/li>\n\n\n\n<li>(c) H<sub>2<\/sub>SO<sub>4<\/sub><\/li>\n\n\n\n<li>(d) C<sub>2<\/sub>H<sub>5<\/sub>OH<\/li>\n\n\n\n<li>(e) NH<sub>3<\/sub><\/li>\n\n\n\n<li>(f) Ca(OH)<sub>2<\/sub><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Calcium chloride when dissolved in water dissociates into its ions according to the following equation.<br>CaCl<sub>2<\/sub>(aq) \u2192 Ca<sup>2+<\/sup>(aq) + 2Cl<sup>\u2013<\/sup>(aq)<br>Calculate the number of ions obtained from CaCl<sub>2<\/sub> when 222 g of it is dissolved in water.<\/li>\n\n\n\n<li>The difference in the mass of 100 moles each of sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.<\/li>\n\n\n\n<li>Cinnabar (HgS) is a prominent ore of mercury. How many grams of mercury are present in 225 g of pure HgS? Molar mass of Hg and S are 200.6 g mol<sup>\u20131<\/sup> and 32 g mol<sup>\u20131<\/sup> respectively.<\/li>\n\n\n\n<li>The mass of one steel screw is 4.11g. Find the mass of one mole of these steel screws. Compare this value with the mass of the Earth (5.98 \u00d7 10<sup>24<\/sup>kg).<br>Which one of the two is heavier and by how many times?<\/li>\n\n\n\n<li>A sample of vitamic C is known to contain 2.58 \u00d710<sup>24<\/sup> oxygen atoms. How many moles of oxygen atoms are present in the sample?<\/li>\n\n\n\n<li>Raunak took 5 moles of carbon atoms in a container and Krish also took 5 moles of sodium atoms in another container of same weight. (a) Whose container is heavier? (b) Whose container has more number of atoms?<\/li>\n\n\n\n<li>Fill in the missing data in the Table 3.1<br>Table 3.1<br><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15951068185_b521b2ba3c_o.jpg\" alt=\"Class 9 Important Questions for Science - Atoms And Molecules\"><\/li>\n\n\n\n<li>The visible universe is estimated to contain 10<sup>22<\/sup> stars. How many moles of stars are present in the visible universe?<\/li>\n\n\n\n<li>What is the SI prefix for each of the following multiples and sub multiples of a unit?\n<ul class=\"wp-block-list\">\n<li>(a) 10<sup>3<\/sup><\/li>\n\n\n\n<li>(b) 10<sup>-1<\/sup><\/li>\n\n\n\n<li>(c) 10<sup>-2<\/sup><\/li>\n\n\n\n<li>(d) 10<sup>-6<\/sup><\/li>\n\n\n\n<li>(e) 10<sup>-9<\/sup><\/li>\n\n\n\n<li>(f) 10<sup>-12<\/sup><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Express each of the following in kilograms\n<ul class=\"wp-block-list\">\n<li>(a) 5.84 \u00d7 10<sup>-3<\/sup>mg<\/li>\n\n\n\n<li>(b) 58.34 g<\/li>\n\n\n\n<li>(c) 0.584g<\/li>\n\n\n\n<li>(d) 5.873 \u00d7 10<sup>-21<\/sup>g<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Compute the difference in masses of 10 3 moles each of magnesium atoms and magnesium ions.<br>(Mass of an electron = 9.1 \u00d7 10<sup>-31<\/sup>kg)<\/li>\n\n\n\n<li>Which has more number of atoms?<br>100g of N<sub>2<\/sub> or 100 g of NH<sub>3<\/sub><\/li>\n\n\n\n<li>Compute the number of ions present in 5.85 g of sodium chloride.<\/li>\n\n\n\n<li>A gold sample contains 90% of gold and the rest copper. How many atoms of gold are present in one gram of this sample of gold?<\/li>\n\n\n\n<li>What are ionic and molecular compounds? Give examples.<\/li>\n\n\n\n<li>Compute the difference in masses of one mole each of aluminium atoms and one mole of its ions. (Mass of an electron is 9.1 \u00d7 10<sup>\u201328<\/sup>g). Which one is heavier?<\/li>\n\n\n\n<li>A silver ornament of mass \u2018m\u2019 gram is polished with gold equivalent to 1% of the mass of silver. Compute the ratio of the number of atoms of gold and silver in the ornament.<\/li>\n\n\n\n<li>A sample of ethane (C<sub>2<\/sub>H<sub>6<\/sub>) gas has the same mass as 1.5 \u00d7 10<sup>20<\/sup> molecules of methane (CH<sub>4<\/sub>). How many C<sub>2<\/sub>H<sub>6<\/sub> molecules does the sample of gas contain?<\/li>\n\n\n\n<li>Fill in the blanks\n<ul class=\"wp-block-list\">\n<li>(a) In a chemical reaction, the sum of the masses of the reactants and products remains unchanged. This is called \u2014\u2014\u2014\u2014.<\/li>\n\n\n\n<li>(b) A group of atoms carrying a fixed charge on them is called \u2014\u2014\u2014\u2014.<\/li>\n\n\n\n<li>(c) The formula unit mass of Ca<sub>3<\/sub>(PO<sub>4<\/sub>)<sub>2<\/sub> is \u2014\u2014\u2014\u2014.<\/li>\n\n\n\n<li>(d) Formula of sodium carbonate is \u2014\u2014\u2014\u2014 and that of ammonium sulphate is \u2014\u2014\u2014\u2014.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Complete the following crossword puzzle (Fig. 3.1) by using the name of the chemical elements. Use the data given in Table 3.2.<br>Table 3.2<br><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15763774990_c66c8e2a50_o.jpg\" alt=\"Class 9 Important Questions for Science - Atoms And Molecules\"><br><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15765043409_494d8bf3db_o.jpg\" alt=\"Class 9 Important Questions for Science - Atoms And Molecules\"><\/li>\n\n\n\n<li>(a) In this crossword puzzle (Fig 3.2), names of 11 elements are hidden.<br>Symbols of these are given below. Complete the puzzle.\n<ul class=\"wp-block-list\">\n<li>1. Cl<\/li>\n\n\n\n<li>2. H<\/li>\n\n\n\n<li>3. Ar<\/li>\n\n\n\n<li>4. O<\/li>\n\n\n\n<li>5. Xe<\/li>\n\n\n\n<li>6. N<\/li>\n\n\n\n<li>7. He<\/li>\n\n\n\n<li>8. F<\/li>\n\n\n\n<li>9. Kr<\/li>\n\n\n\n<li>10. Rn<\/li>\n\n\n\n<li>11. Ne<br><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/15765043399_11fac1e175_o.jpg\" alt=\"Class 9 Important Questions for Science - Atoms And Molecules\"><\/li>\n\n\n\n<li>(b) Identify the total number of inert gases, their names and symbols from this cross word puzzle.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Write the formulae for the following and calculate the molecular mass for each one of them.\n<ul class=\"wp-block-list\">\n<li>(a) Caustic potash<\/li>\n\n\n\n<li>(b) Baking powder<\/li>\n\n\n\n<li>(c) Lime stone<\/li>\n\n\n\n<li>(d) Caustic soda<\/li>\n\n\n\n<li>(e) Ethanol<\/li>\n\n\n\n<li>(f) Common salt<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula C<sub>6<\/sub>H<sub>12<\/sub>O<sub>6<\/sub>. How many grams of water would be required to produce 18 g of glucose? Compute the volume of water so consumed assuming the density of water to be 1g cm<sup>\u20133<\/sup>.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Answers<\/h3>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036191538_02cbeaa1c5_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036692761_767bcf8b6e_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036191478_66e613e997_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036191443_c7749a9934_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036908932_041f0b851b_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036191278_98bf17fa09_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036908787_26d2913698_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036702661_9fb1bbbec4_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036908797_e095148179_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036692466_9232f98ff4_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036908712_1578cc6443_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2024\/04\/49036908622_aca4b53ba8_o.png\" alt=\"\"\/><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-problems-solutions\/\" style=\"background-color:#f06d6d\" target=\"_blank\" rel=\"noreferrer noopener\">NCERT Exemplar Solutions<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-Science-solutions\/\" style=\"background-color:#f06d6d\" target=\"_blank\" rel=\"noreferrer noopener\">NCERT Class 9 Exemplar Solutions<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Exemplar Class 9 Science&nbsp;Chapter 3: Atoms And Molecules. NCERT Exemplar Solutions for Class 9 Science&nbsp;Chapter 3 Atoms And Molecules prepare students for their Class 9 exams thoroughly. Science&nbsp;problems and solutions for the Class 9 pdf are provided here which are similar to the questions being asked in the previous year&#8217;s board. NCERT Exemplar Class [&hellip;]<\/p>\n","protected":false},"author":302,"featured_media":620553,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"newspack_featured_image_position":"","newspack_post_subtitle":"","newspack_article_summary_title":"Overview:","newspack_article_summary":"","newspack_hide_updated_date":false,"newspack_show_updated_date":false,"footnotes":""},"categories":[1411,921],"tags":[],"boards":[],"class_list":["post-620551","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-book-solutions","category-class-9","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Exemplar for Class 9, Science\u00a0Chapter 3 - IndCareer Schools<\/title>\n<meta name=\"description\" content=\"NCERT Exemplar Class 9 Science\u00a0Chapter 3: Atoms And Molecules | Browse all Class 9 Science\u00a0Chapters NCERT Exemplar books - IndCareer Schools\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NCERT Exemplar Class 9 Science\u00a0Chapter 3: Atoms And Molecules\" \/>\n<meta property=\"og:description\" content=\"NCERT Exemplar Class 9 Science&nbsp;Chapter 3: Atoms And Molecules. NCERT Exemplar Solutions for Class 9 Science&nbsp;Chapter 3 Atoms And Molecules\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/\" \/>\n<meta property=\"og:site_name\" content=\"IndCareer Schools\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/indcareer\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-11T03:16:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-29T13:00:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/indcareer-schools-2-7-5-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"901\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Pooja\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@indcareer\" \/>\n<meta name=\"twitter:site\" content=\"@indcareer\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Pooja\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"11 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/\"},\"author\":{\"name\":\"Pooja\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/#\/schema\/person\/d6945cf059726f162259ba738092301e\"},\"headline\":\"NCERT Exemplar Class 9 Science\u00a0Chapter 3: Atoms And Molecules\",\"datePublished\":\"2023-03-11T03:16:44+00:00\",\"dateModified\":\"2024-04-29T13:00:13+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/\"},\"wordCount\":1415,\"publisher\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2023\/03\/indcareer-schools-2-7-5-scaled.jpg\",\"articleSection\":[\"Book Solutions\",\"class 9\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/\",\"url\":\"https:\/\/www.indcareer.com\/schools\/ncert-exemplar-class-9-science-chapter-3-atoms-and-molecules\/\",\"name\":\"NCERT Exemplar for Class 9, Science\u00a0Chapter 3 - 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