{"id":3997,"date":"2026-07-19T13:30:43","date_gmt":"2026-07-19T13:30:43","guid":{"rendered":"https:\/\/physicscatalyst.com\/testprep\/class-9-science\/exploring-mixtures-and-their-separation-class-9-online-test\/"},"modified":"2026-07-19T13:30:43","modified_gmt":"2026-07-19T13:30:43","slug":"exploring-mixtures-and-their-separation-class-9-online-test","status":"publish","type":"post","link":"https:\/\/physicscatalyst.com\/testprep\/class-9-science\/exploring-mixtures-and-their-separation-class-9-online-test\/","title":{"rendered":"Exploring Mixtures and their Separation Class 9 Online test"},"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=\"submittingExam524\" 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-524\"><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 'Submit' button.<\/li>\n<\/ul>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-524\"  enctype=\"multipart\/form-data\" >\n<div class='watu-question ' id='question-1' style=';'><div id='questionWrap-1'  class='   watupro-question-id-8676'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>1. <\/span>Which type of mixture shows the Tyndall effect?<\/div><input type='hidden' name='question_id[]' id='qID_1' value='8676' class='watupro-question-id'\/><input type='hidden' id='answerType8676' class='answerTypeCnt1' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8676'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8676[]' id='answer-id-34652' class='answer   answerof-8676  ' value='34652'   \/><label for='answer-id-34652' id='answer-label-34652' class=' answer'><span>Solution<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8676[]' id='answer-id-34653' class='answer   answerof-8676  ' value='34653'   \/><label for='answer-id-34653' id='answer-label-34653' class=' answer'><span>Pure sunstance<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8676[]' id='answer-id-34654' class='answer   answerof-8676  ' value='34654'   \/><label for='answer-id-34654' id='answer-label-34654' class=' answer'><span>colliod<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8676[]' id='answer-id-34655' class='answer   answerof-8676  ' value='34655'   \/><label for='answer-id-34655' id='answer-label-34655' class=' answer'><span>None of the above<\/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-8677'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>2. <\/span>The particle size of colloids is generally:<\/div><input type='hidden' name='question_id[]' id='qID_2' value='8677' class='watupro-question-id'\/><input type='hidden' id='answerType8677' class='answerTypeCnt2' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8677'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8677[]' id='answer-id-34656' class='answer   answerof-8677  ' value='34656'   \/><label for='answer-id-34656' id='answer-label-34656' class=' answer'><span>Less than 1 nm<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8677[]' id='answer-id-34657' class='answer   answerof-8677  ' value='34657'   \/><label for='answer-id-34657' id='answer-label-34657' class=' answer'><span>Between 1 and 1000 nm<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8677[]' id='answer-id-34658' class='answer   answerof-8677  ' value='34658'   \/><label for='answer-id-34658' id='answer-label-34658' class=' answer'><span>More than 1000 nm<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8677[]' id='answer-id-34659' class='answer   answerof-8677  ' value='34659'   \/><label for='answer-id-34659' id='answer-label-34659' class=' answer'><span>Exactly 1000 nm<\/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-8678'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>3. <\/span>A mixture in which particles settle down on standing is:<\/div><input type='hidden' name='question_id[]' id='qID_3' value='8678' class='watupro-question-id'\/><input type='hidden' id='answerType8678' class='answerTypeCnt3' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8678'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8678[]' id='answer-id-34660' class='answer   answerof-8678  ' value='34660'   \/><label for='answer-id-34660' id='answer-label-34660' class=' answer'><span>Solution<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8678[]' id='answer-id-34661' class='answer   answerof-8678  ' value='34661'   \/><label for='answer-id-34661' id='answer-label-34661' class=' answer'><span>Colloid<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8678[]' id='answer-id-34662' class='answer   answerof-8678  ' value='34662'   \/><label for='answer-id-34662' id='answer-label-34662' class=' answer'><span> Suspension<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8678[]' id='answer-id-34663' class='answer   answerof-8678  ' value='34663'   \/><label for='answer-id-34663' id='answer-label-34663' class=' answer'><span>Alloy<\/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-8679'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>4. <\/span>The method used to separate salt from salt solution is:<\/div><input type='hidden' name='question_id[]' id='qID_4' value='8679' class='watupro-question-id'\/><input type='hidden' id='answerType8679' class='answerTypeCnt4' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8679'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8679[]' id='answer-id-34664' class='answer   answerof-8679  ' value='34664'   \/><label for='answer-id-34664' id='answer-label-34664' class=' answer'><span>Filtration<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8679[]' id='answer-id-34665' class='answer   answerof-8679  ' value='34665'   \/><label for='answer-id-34665' id='answer-label-34665' class=' answer'><span>Evaporation<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8679[]' id='answer-id-34666' class='answer   answerof-8679  ' value='34666'   \/><label for='answer-id-34666' id='answer-label-34666' class=' answer'><span> Sedimentation<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8679[]' id='answer-id-34667' class='answer   answerof-8679  ' value='34667'   \/><label for='answer-id-34667' id='answer-label-34667' class=' answer'><span>Winnowing<\/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-8680'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>5. <\/span>Which of the following can be separated by sublimation?<\/div><input type='hidden' name='question_id[]' id='qID_5' value='8680' class='watupro-question-id'\/><input type='hidden' id='answerType8680' class='answerTypeCnt5' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8680'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8680[]' id='answer-id-34668' class='answer   answerof-8680  ' value='34668'   \/><label for='answer-id-34668' id='answer-label-34668' class=' answer'><span> Salt and water<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8680[]' id='answer-id-34669' class='answer   answerof-8680  ' value='34669'   \/><label for='answer-id-34669' id='answer-label-34669' class=' answer'><span>Sand and water<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8680[]' id='answer-id-34670' class='answer   answerof-8680  ' value='34670'   \/><label for='answer-id-34670' id='answer-label-34670' class=' answer'><span>Ammonium chloride and sand<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8680[]' id='answer-id-34671' class='answer   answerof-8680  ' value='34671'   \/><label for='answer-id-34671' id='answer-label-34671' class=' answer'><span>Oil and water<\/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-8681'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>6. <\/span>Which method is used to separate miscible liquids with different boiling points?<\/div><input type='hidden' name='question_id[]' id='qID_6' value='8681' class='watupro-question-id'\/><input type='hidden' id='answerType8681' class='answerTypeCnt6' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8681'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8681[]' id='answer-id-34672' class='answer   answerof-8681  ' value='34672'   \/><label for='answer-id-34672' id='answer-label-34672' class=' answer'><span>Filtration<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8681[]' id='answer-id-34673' class='answer   answerof-8681  ' value='34673'   \/><label for='answer-id-34673' id='answer-label-34673' class=' answer'><span>Fractional distillation<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8681[]' id='answer-id-34674' class='answer   answerof-8681  ' value='34674'   \/><label for='answer-id-34674' id='answer-label-34674' class=' answer'><span>Decantation<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8681[]' id='answer-id-34675' class='answer   answerof-8681  ' value='34675'   \/><label for='answer-id-34675' id='answer-label-34675' class=' answer'><span>Sedimentation<\/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-8682'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>7. <\/span>What is the correct way to express mass by mass percentage?<\/div><input type='hidden' name='question_id[]' id='qID_7' value='8682' class='watupro-question-id'\/><input type='hidden' id='answerType8682' class='answerTypeCnt7' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8682'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8682[]' id='answer-id-34676' class='answer   answerof-8682  ' value='34676'   \/><label for='answer-id-34676' id='answer-label-34676' class=' answer'><span>Mass of solute \/ Mass of solution \u00d7 100<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8682[]' id='answer-id-34677' class='answer   answerof-8682  ' value='34677'   \/><label for='answer-id-34677' id='answer-label-34677' class=' answer'><span> Mass of solvent \/ Mass of solution \u00d7 100<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8682[]' id='answer-id-34678' class='answer   answerof-8682  ' value='34678'   \/><label for='answer-id-34678' id='answer-label-34678' class=' answer'><span>Mass of solution \/ Mass of solute \u00d7 100<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8682[]' id='answer-id-34679' class='answer   answerof-8682  ' value='34679'   \/><label for='answer-id-34679' id='answer-label-34679' class=' answer'><span>Mass of solute \/ Mass of solvent \u00d7 100<\/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-8683'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>8. <\/span>Which method is used to separate cream from milk?<\/div><input type='hidden' name='question_id[]' id='qID_8' value='8683' class='watupro-question-id'\/><input type='hidden' id='answerType8683' class='answerTypeCnt8' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8683'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8683[]' id='answer-id-34680' class='answer   answerof-8683  ' value='34680'   \/><label for='answer-id-34680' id='answer-label-34680' class=' answer'><span> Filtration<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8683[]' id='answer-id-34681' class='answer   answerof-8683  ' value='34681'   \/><label for='answer-id-34681' id='answer-label-34681' class=' answer'><span>Centrifugation<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8683[]' id='answer-id-34682' class='answer   answerof-8683  ' value='34682'   \/><label for='answer-id-34682' id='answer-label-34682' class=' answer'><span>Sublimation<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8683[]' id='answer-id-34683' class='answer   answerof-8683  ' value='34683'   \/><label for='answer-id-34683' id='answer-label-34683' class=' answer'><span>Crystallization<\/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-8684'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>9. <\/span>A mixture of two miscible liquids, ethanol and water, needs to be separated in a school laboratory. Which method is best suited, and which specific property difference allows the separation?<\/div><input type='hidden' name='question_id[]' id='qID_9' value='8684' class='watupro-question-id'\/><input type='hidden' id='answerType8684' class='answerTypeCnt9' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8684'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8684[]' id='answer-id-34684' class='answer   answerof-8684  ' value='34684'   \/><label for='answer-id-34684' id='answer-label-34684' class=' answer'><span>Magnetic separation, relying on different magnetic behaviour of ethanol and water<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8684[]' id='answer-id-34685' class='answer   answerof-8684  ' value='34685'   \/><label for='answer-id-34685' id='answer-label-34685' class=' answer'><span>\r\nFractional distillation, relying on a significant difference in boiling points between ethanol and water<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8684[]' id='answer-id-34686' class='answer   answerof-8684  ' value='34686'   \/><label for='answer-id-34686' id='answer-label-34686' class=' answer'><span>Sublimation, relying on ethanol turning directly into vapour without boiling<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8684[]' id='answer-id-34687' class='answer   answerof-8684  ' value='34687'   \/><label for='answer-id-34687' id='answer-label-34687' class=' answer'><span>Chromatography, relying on different colours of ethanol and water on paper<\/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-8685'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>10. <\/span>Brass is a mixture of:<\/div><input type='hidden' name='question_id[]' id='qID_10' value='8685' class='watupro-question-id'\/><input type='hidden' id='answerType8685' class='answerTypeCnt10' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '  id='questionChoices8685'><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8685[]' id='answer-id-34688' class='answer   answerof-8685  ' value='34688'   \/><label for='answer-id-34688' id='answer-label-34688' class=' answer'><span>Copper and tin<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8685[]' id='answer-id-34689' class='answer   answerof-8685  ' value='34689'   \/><label for='answer-id-34689' id='answer-label-34689' class=' answer'><span> Iron and carbon<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8685[]' id='answer-id-34690' class='answer   answerof-8685  ' value='34690'   \/><label for='answer-id-34690' id='answer-label-34690' class=' answer'><span>Copper and zinc<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-8685[]' id='answer-id-34691' class='answer   answerof-8685  ' value='34691'   \/><label for='answer-id-34691' id='answer-label-34691' class=' answer'><span>Zinc and tin<\/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=\"watuPROButtons524\" >\n\t\t  <div 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