{"id":3832,"date":"2023-01-09T10:37:53","date_gmt":"2023-01-09T10:37:53","guid":{"rendered":"https:\/\/7thclass.deltapublications.in\/?page_id=3832"},"modified":"2025-08-13T06:56:03","modified_gmt":"2025-08-13T06:56:03","slug":"s-5-b-natural-indicator-around-us","status":"publish","type":"page","link":"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-b-natural-indicator-around-us\/","title":{"rendered":"S-5.b Natural Indicator Around Us"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Natural Indicator Around Us<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/DquEKPMbuag?rel=0&#038;si=d52MYnNUisJLdujv\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-color has-huge-font-size\" style=\"color:#74008b\"><strong>Key Notes :<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\"><strong>Definition of Indicators<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Indicators are substances that change color when added to acidic or basic solutions, helping to determine the pH of a substance.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\"><strong>Types of Indicators<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\"><strong>Natural Indicators<\/strong>: Indicators derived from natural sources like plants. They are non-toxic and environmentally friendly.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-89-1024x579.png\" alt=\"\" class=\"wp-image-16675\" style=\"width:448px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-89-1024x579.png 1024w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-89-300x170.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-89-768x434.png 768w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-89.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-large-font-size\"><strong>Synthetic Indicators<\/strong>: Man-made indicators like phenolphthalein and methyl orange.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-90-1024x579.png\" alt=\"\" class=\"wp-image-16676\" style=\"width:485px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-90-1024x579.png 1024w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-90-300x170.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-90-768x434.png 768w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-90.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\"><strong>Common Natural Indicators<\/strong><\/h3>\n\n\n\n<p class=\"has-large-font-size\"><strong>Litmus<\/strong>: Extracted from lichens, litmus turns red in acidic solutions and blue in basic solutions.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Turmeric<\/strong>: Turmeric powder turns red in basic solutions but remains yellow in acidic or neutral solutions.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>China Rose (Hibiscus)<\/strong>: The extract turns acidic solutions dark pink\/red and basic solutions greenish.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>Red Cabbage<\/strong>: Red cabbage juice turns red in acidic solutions and green in basic solutions.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-86-1024x579.png\" alt=\"\" class=\"wp-image-16671\" style=\"width:494px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-86-1024x579.png 1024w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-86-300x170.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-86-768x434.png 768w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-86.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\"><strong>Use of Natural Indicators<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Natural indicators are used in laboratories and at home to test the acidity or basicity of substances like vinegar, baking soda, lemon juice, and soap.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\"><strong>Advantages of Natural Indicators<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>They are eco-friendly, non-toxic, and easily available.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-text-color has-large-font-size\" style=\"color:#000060\"><strong>Applications in Daily Life<\/strong><\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"579\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-91-1024x579.png\" alt=\"\" class=\"wp-image-16677\" style=\"width:445px;height:auto\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-91-1024x579.png 1024w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-91-300x170.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-91-768x434.png 768w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2025\/08\/Untitled-design-91.png 1472w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Testing soil pH for gardening.<\/li>\n\n\n\n<li>Checking the pH of water in swimming pools.<\/li>\n\n\n\n<li>Determining the acidity of food items.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76678\/428\/936\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-20.png\" alt=\"\" class=\"wp-image-5900\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-20.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-20-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-20-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-20-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76706\/068\/841\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-16.png\" alt=\"\" class=\"wp-image-5901\" srcset=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-16.png 500w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-16-300x300.png 300w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-16-150x150.png 150w, https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-16-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Natural Indicator Around Us Key Notes : Definition of Indicators Types of Indicators Natural Indicators: Indicators derived from natural sources like plants. They are non-toxic and environmentally friendly. Synthetic Indicators: Man-made indicators like phenolphthalein and methyl orange. Common Natural Indicators Litmus: Extracted from lichens, litmus turns red in acidic solutions and blue in basic solutions.<a class=\"more-link\" href=\"https:\/\/7thclass.deltapublications.in\/index.php\/s-5-b-natural-indicator-around-us\/\">Continue reading <span class=\"screen-reader-text\">&#8220;S-5.b Natural Indicator Around Us&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-3832","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3832","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3832"}],"version-history":[{"count":32,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3832\/revisions"}],"predecessor-version":[{"id":16715,"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3832\/revisions\/16715"}],"wp:attachment":[{"href":"https:\/\/7thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3832"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}