{"id":3952,"date":"2026-03-14T15:42:19","date_gmt":"2026-03-14T15:42:19","guid":{"rendered":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/"},"modified":"2026-03-14T15:42:19","modified_gmt":"2026-03-14T15:42:19","slug":"nature-of-matter-elements-compounds-and-mixtures-class-8-mcq","status":"publish","type":"post","link":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/","title":{"rendered":"Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ"},"content":{"rendered":"<script type=\"text\/javascript\" >\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \nif(!window.jQuery) alert(\"The important jQuery library is not properly loaded in your site. Your WordPress theme is probably missing the essential wp_head() call. You can switch to another theme and you will see that the plugin works fine and this notice disappears. If you are still not sure what to do you can contact us for help.\");\n});\n<\/script>  \n  \n<div  id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam507\" style=\"display:none;text-align:center;\">Please wait...<br><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/physicscatalyst.com\/testprep\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n<div class=\"watupro-exam-description\" id=\"description-quiz-507\"><p><strong>General Instructions<\/strong><\/p>\n<ul>\n<li>Your test contains multiple-choice questions with only one answer-type question. There are a total of 10 questions<\/li>\n<li>This is a 20 min test. Please make sure you complete it in the stipulated time<\/li>\n<li>You can finish this test any time using the <span style=\"color: #ff0000;\"><strong>'Submit'<\/strong><\/span> button.<\/li>\n<\/ul>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-507\"  enctype=\"multipart\/form-data\" >\n<div class='watu-question ' id='question-1' style=';'><div id='questionWrap-1'  class='   watupro-question-id-8506'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>1. <\/span>stainless steel is a mixture of<\/div><input type='hidden' name='question_id[]' id='qID_1' value='8506' class='watupro-question-id'\/><input type='hidden' id='answerType8506' class='answerTypeCnt1' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8506'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8506[]' id='answer-id-33972' class='answer   answerof-8506  ' value='33972'   \/><label for='answer-id-33972' id='answer-label-33972' class=' answer'><span>iron, nickel, chromium,carbon<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8506[]' id='answer-id-33973' class='answer   answerof-8506  ' value='33973'   \/><label for='answer-id-33973' id='answer-label-33973' class=' answer'><span>iron and tin<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8506[]' id='answer-id-33974' class='answer   answerof-8506  ' value='33974'   \/><label for='answer-id-33974' id='answer-label-33974' class=' answer'><span>copper and tin<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8506[]' id='answer-id-33975' class='answer   answerof-8506  ' value='33975'   \/><label for='answer-id-33975' id='answer-label-33975' class=' answer'><span>iron and copper<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-2' style=';'><div id='questionWrap-2'  class='   watupro-question-id-8507'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>2. <\/span>What is the smallest unit of an element?<\/div><input type='hidden' name='question_id[]' id='qID_2' value='8507' class='watupro-question-id'\/><input type='hidden' id='answerType8507' class='answerTypeCnt2' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8507'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8507[]' id='answer-id-33976' class='answer   answerof-8507  ' value='33976'   \/><label for='answer-id-33976' id='answer-label-33976' class=' answer'><span>Molecule<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8507[]' id='answer-id-33977' class='answer   answerof-8507  ' value='33977'   \/><label for='answer-id-33977' id='answer-label-33977' class=' answer'><span>atom<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8507[]' id='answer-id-33978' class='answer   answerof-8507  ' value='33978'   \/><label for='answer-id-33978' id='answer-label-33978' class=' answer'><span>cell <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8507[]' id='answer-id-33979' class='answer   answerof-8507  ' value='33979'   \/><label for='answer-id-33979' id='answer-label-33979' class=' answer'><span>compound<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-3' style=';'><div id='questionWrap-3'  class='   watupro-question-id-8508'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>3. <\/span>What is a pure substance?<\/div><input type='hidden' name='question_id[]' id='qID_3' value='8508' class='watupro-question-id'\/><input type='hidden' id='answerType8508' class='answerTypeCnt3' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8508'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8508[]' id='answer-id-33980' class='answer   answerof-8508  ' value='33980'   \/><label for='answer-id-33980' id='answer-label-33980' class=' answer'><span>substance with only one type of particle<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8508[]' id='answer-id-33981' class='answer   answerof-8508  ' value='33981'   \/><label for='answer-id-33981' id='answer-label-33981' class=' answer'><span>any liquid<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8508[]' id='answer-id-33982' class='answer   answerof-8508  ' value='33982'   \/><label for='answer-id-33982' id='answer-label-33982' class=' answer'><span>mixture of water and sugar<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8508[]' id='answer-id-33983' class='answer   answerof-8508  ' value='33983'   \/><label for='answer-id-33983' id='answer-label-33983' class=' answer'><span>None of the above<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-4' style=';'><div id='questionWrap-4'  class='   watupro-question-id-8509'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>4. <\/span>Which of the following best describes a mixture?<\/div><input type='hidden' name='question_id[]' id='qID_4' value='8509' class='watupro-question-id'\/><input type='hidden' id='answerType8509' class='answerTypeCnt4' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8509'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8509[]' id='answer-id-33984' class='answer   answerof-8509  ' value='33984'   \/><label for='answer-id-33984' id='answer-label-33984' class=' answer'><span>Chemically bonded atoms<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8509[]' id='answer-id-33985' class='answer   answerof-8509  ' value='33985'   \/><label for='answer-id-33985' id='answer-label-33985' class=' answer'><span>Uniform composition always<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8509[]' id='answer-id-33986' class='answer   answerof-8509  ' value='33986'   \/><label for='answer-id-33986' id='answer-label-33986' class=' answer'><span>Substances physically combined<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8509[]' id='answer-id-33987' class='answer   answerof-8509  ' value='33987'   \/><label for='answer-id-33987' id='answer-label-33987' class=' answer'><span>Fixed formula<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-5' style=';'><div id='questionWrap-5'  class='   watupro-question-id-8510'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>5. <\/span>An illegal process of adding substances which are cheaper, or of a poor quality, to a product<\/div><input type='hidden' name='question_id[]' id='qID_5' value='8510' class='watupro-question-id'\/><input type='hidden' id='answerType8510' class='answerTypeCnt5' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8510'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8510[]' id='answer-id-33988' class='answer   answerof-8510  ' value='33988'   \/><label for='answer-id-33988' id='answer-label-33988' class=' answer'><span>Adulteration<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8510[]' id='answer-id-33989' class='answer   answerof-8510  ' value='33989'   \/><label for='answer-id-33989' id='answer-label-33989' class=' answer'><span>impurity<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8510[]' id='answer-id-33990' class='answer   answerof-8510  ' value='33990'   \/><label for='answer-id-33990' id='answer-label-33990' class=' answer'><span>chemical reaction<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8510[]' id='answer-id-33991' class='answer   answerof-8510  ' value='33991'   \/><label for='answer-id-33991' id='answer-label-33991' class=' answer'><span>None of the above<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-6' style=';'><div id='questionWrap-6'  class='   watupro-question-id-8511'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>6. <\/span>Which of these is NOT true for a compound?<\/div><input type='hidden' name='question_id[]' id='qID_6' value='8511' class='watupro-question-id'\/><input type='hidden' id='answerType8511' class='answerTypeCnt6' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8511'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8511[]' id='answer-id-33992' class='answer   answerof-8511  ' value='33992'   \/><label for='answer-id-33992' id='answer-label-33992' class=' answer'><span>Its components can be separated by a physical method<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8511[]' id='answer-id-33993' class='answer   answerof-8511  ' value='33993'   \/><label for='answer-id-33993' id='answer-label-33993' class=' answer'><span>Formed by chemical combination<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8511[]' id='answer-id-33994' class='answer   answerof-8511  ' value='33994'   \/><label for='answer-id-33994' id='answer-label-33994' class=' answer'><span>Has different properties from its elements<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8511[]' id='answer-id-33995' class='answer   answerof-8511  ' value='33995'   \/><label for='answer-id-33995' id='answer-label-33995' class=' answer'><span> Has a fixed ratio<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-7' style=';'><div id='questionWrap-7'  class='   watupro-question-id-8512'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>7. <\/span>what is not true of wonder material graphene aerogel?<\/div><input type='hidden' name='question_id[]' id='qID_7' value='8512' class='watupro-question-id'\/><input type='hidden' id='answerType8512' class='answerTypeCnt7' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8512'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8512[]' id='answer-id-33996' class='answer   answerof-8512  ' value='33996'   \/><label for='answer-id-33996' id='answer-label-33996' class=' answer'><span>made of carbon<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8512[]' id='answer-id-33997' class='answer   answerof-8512  ' value='33997'   \/><label for='answer-id-33997' id='answer-label-33997' class=' answer'><span>lightest element<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8512[]' id='answer-id-33998' class='answer   answerof-8512  ' value='33998'   \/><label for='answer-id-33998' id='answer-label-33998' class=' answer'><span>highly porous<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8512[]' id='answer-id-33999' class='answer   answerof-8512  ' value='33999'   \/><label for='answer-id-33999' id='answer-label-33999' class=' answer'><span>None of the above<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-8' style=';'><div id='questionWrap-8'  class='   watupro-question-id-8513'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>8. <\/span>What does the term \u201calloy\u201d refer to?<\/div><input type='hidden' name='question_id[]' id='qID_8' value='8513' class='watupro-question-id'\/><input type='hidden' id='answerType8513' class='answerTypeCnt8' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8513'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8513[]' id='answer-id-34000' class='answer   answerof-8513  ' value='34000'   \/><label for='answer-id-34000' id='answer-label-34000' class=' answer'><span>Uniform mixture of metals<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8513[]' id='answer-id-34001' class='answer   answerof-8513  ' value='34001'   \/><label for='answer-id-34001' id='answer-label-34001' class=' answer'><span>Compound of gases<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8513[]' id='answer-id-34002' class='answer   answerof-8513  ' value='34002'   \/><label for='answer-id-34002' id='answer-label-34002' class=' answer'><span>New element<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8513[]' id='answer-id-34003' class='answer   answerof-8513  ' value='34003'   \/><label for='answer-id-34003' id='answer-label-34003' class=' answer'><span>Chemical compound<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-9' style=';'><div id='questionWrap-9'  class='   watupro-question-id-8514'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>9. <\/span>which of the following is incorrect?<\/div><input type='hidden' name='question_id[]' id='qID_9' value='8514' class='watupro-question-id'\/><input type='hidden' id='answerType8514' class='answerTypeCnt9' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8514'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8514[]' id='answer-id-34004' class='answer   answerof-8514  ' value='34004'   \/><label for='answer-id-34004' id='answer-label-34004' class=' answer'><span>Pure substance can be either an element or a compound<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8514[]' id='answer-id-34005' class='answer   answerof-8514  ' value='34005'   \/><label for='answer-id-34005' id='answer-label-34005' class=' answer'><span>Substances which are composed of two or more elements combined\r\nchemically in a fixed ratio and have different properties from their\r\nconstituent elements are called compounds<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8514[]' id='answer-id-34006' class='answer   answerof-8514  ' value='34006'   \/><label for='answer-id-34006' id='answer-label-34006' class=' answer'><span>quartz, calcite, mica, pyroxene, and olivine are examples of mineral<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8514[]' id='answer-id-34007' class='answer   answerof-8514  ' value='34007'   \/><label for='answer-id-34007' id='answer-label-34007' class=' answer'><span>none of the above<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-10' style=';'><div id='questionWrap-10'  class='   watupro-question-id-8515'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>10. <\/span>What kind of mixture is sugar solution?<\/div><input type='hidden' name='question_id[]' id='qID_10' value='8515' class='watupro-question-id'\/><input type='hidden' id='answerType8515' class='answerTypeCnt10' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8515'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8515[]' id='answer-id-34008' class='answer   answerof-8515  ' value='34008'   \/><label for='answer-id-34008' id='answer-label-34008' class=' answer'><span>Uniform mixture<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8515[]' id='answer-id-34009' class='answer   answerof-8515  ' value='34009'   \/><label for='answer-id-34009' id='answer-label-34009' class=' answer'><span>Non Uniform mixture<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8515[]' id='answer-id-34010' class='answer   answerof-8515  ' value='34010'   \/><label for='answer-id-34010' id='answer-label-34010' class=' answer'><span>compounds<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8515[]' id='answer-id-34011' class='answer   answerof-8515  ' value='34011'   \/><label for='answer-id-34011' id='answer-label-34011' class=' answer'><span>elements<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div style='display:none' id='question-11'>\n\t<div class='question-content'>\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/physicscatalyst.com\/testprep\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\" \/>&nbsp;Loading...\t<\/div>\n<\/div>\n\n<br \/>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons507\" >\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; Previous\" onclick=\"WatuPRO.nextQuestion(event, 'previous');\"\/><\/div>\t\t  \t\t  \t\t   \n\t\t   \t  \t\t<div><input type=\"button\" name=\"action\" class=\"watupro-submit-button\" onclick=\"WatuPRO.submitResult(event)\" id=\"action-button\" value=\"SUBMIT\"  \/>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\n\t<input type=\"hidden\" name=\"quiz_id\" value=\"507\" id=\"watuPROExamID\"\/>\n\t<input type=\"hidden\" name=\"start_time\" id=\"startTime\" value=\"2026-04-03 22:47:21\" \/>\n\t<input type=\"hidden\" name=\"start_timestamp\" id=\"startTimeStamp\" value=\"1775256441\" \/>\n\t<input type=\"hidden\" name=\"question_ids\" value=\"\" \/>\n\t<input type=\"hidden\" name=\"watupro_questions\" value=\"8506:33972,33973,33974,33975 | 8507:33976,33977,33978,33979 | 8508:33980,33981,33982,33983 | 8509:33984,33985,33986,33987 | 8510:33988,33989,33990,33991 | 8511:33992,33993,33994,33995 | 8512:33996,33997,33998,33999 | 8513:34000,34001,34002,34003 | 8514:34004,34005,34006,34007 | 8515:34008,34009,34010,34011\" \/>\n\t<input type=\"hidden\" name=\"no_ajax\" value=\"0\">\t\t\t<\/form>\n\t<p>&nbsp;<\/p>\n<\/div>\n\n<script type=\"text\/javascript\">\n\/\/jQuery(document).ready(function(){\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \t\nvar question_ids = \"8506,8507,8508,8509,8510,8511,8512,8513,8514,8515\";\nWatuPROSettings[507] = {};\nWatuPRO.qArr = question_ids.split(',');\nWatuPRO.exam_id = 507;\t    \nWatuPRO.post_id = 3952;\nWatuPRO.store_progress = 0;\nWatuPRO.curCatPage = 1;\nWatuPRO.requiredIDs=\"0\".split(\",\");\nWatuPRO.hAppID = \"0.60009600 1775256441\";\nvar url = \"https:\/\/physicscatalyst.com\/testprep\/wp-content\/plugins\/watupro\/show_exam.php\";\nWatuPRO.examMode = 1;\nWatuPRO.siteURL=\"https:\/\/physicscatalyst.com\/testprep\/wp-admin\/admin-ajax.php\";\nWatuPRO.emailIsNotRequired = 0;\nWatuPRO.perDecade = 10;\nWatuPROIntel.init(507);\nWatuPRO.inCategoryPages=1;});    \t \n<\/script>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[21],"tags":[],"class_list":["post-3952","post","type-post","status-publish","format-standard","hentry","category-class-8-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ - MCQ Online Test<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ - MCQ Online Test\" \/>\n<meta property=\"og:url\" content=\"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ Online Test\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-14T15:42:19+00:00\" \/>\n<meta name=\"author\" content=\"physicscatalyst\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"physicscatalyst\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ - MCQ Online Test","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/","og_locale":"en_US","og_type":"article","og_title":"Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ - MCQ Online Test","og_url":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/","og_site_name":"MCQ Online Test","article_published_time":"2026-03-14T15:42:19+00:00","author":"physicscatalyst","twitter_card":"summary_large_image","twitter_misc":{"Written by":"physicscatalyst"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/#article","isPartOf":{"@id":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/"},"author":{"name":"physicscatalyst","@id":"https:\/\/physicscatalyst.com\/testprep\/#\/schema\/person\/c8527ff9e1b5b3d4c0a232d4fce9d00d"},"headline":"Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ","datePublished":"2026-03-14T15:42:19+00:00","mainEntityOfPage":{"@id":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/"},"wordCount":10,"commentCount":0,"publisher":{"@id":"https:\/\/physicscatalyst.com\/testprep\/#\/schema\/person\/c8527ff9e1b5b3d4c0a232d4fce9d00d"},"articleSection":["class 8 science"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/","url":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/","name":"Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ - MCQ Online Test","isPartOf":{"@id":"https:\/\/physicscatalyst.com\/testprep\/#website"},"datePublished":"2026-03-14T15:42:19+00:00","breadcrumb":{"@id":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/physicscatalyst.com\/testprep\/class-8-science\/nature-of-matter-elements-compounds-and-mixtures-class-8-mcq\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/physicscatalyst.com\/testprep\/"},{"@type":"ListItem","position":2,"name":"Nature of Matter: Elements, Compounds, and Mixtures class 8 MCQ"}]},{"@type":"WebSite","@id":"https:\/\/physicscatalyst.com\/testprep\/#website","url":"https:\/\/physicscatalyst.com\/testprep\/","name":"MCQ Online Test","description":"Score top marks with our expert-designed online quizzes and MCQs for classes 6-12 and competitive exams.","publisher":{"@id":"https:\/\/physicscatalyst.com\/testprep\/#\/schema\/person\/c8527ff9e1b5b3d4c0a232d4fce9d00d"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/physicscatalyst.com\/testprep\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/physicscatalyst.com\/testprep\/#\/schema\/person\/c8527ff9e1b5b3d4c0a232d4fce9d00d","name":"physicscatalyst","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/physicscatalyst.com\/testprep\/wp-content\/uploads\/2018\/10\/cropped-logo-2.png","url":"https:\/\/physicscatalyst.com\/testprep\/wp-content\/uploads\/2018\/10\/cropped-logo-2.png","contentUrl":"https:\/\/physicscatalyst.com\/testprep\/wp-content\/uploads\/2018\/10\/cropped-logo-2.png","width":200,"height":71,"caption":"physicscatalyst"},"logo":{"@id":"https:\/\/physicscatalyst.com\/testprep\/wp-content\/uploads\/2018\/10\/cropped-logo-2.png"}}]}},"_links":{"self":[{"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/posts\/3952","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/comments?post=3952"}],"version-history":[{"count":0,"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/posts\/3952\/revisions"}],"wp:attachment":[{"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/media?parent=3952"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/categories?post=3952"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/physicscatalyst.com\/testprep\/wp-json\/wp\/v2\/tags?post=3952"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}