{"id":92131,"date":"2025-06-01T11:15:29","date_gmt":"2025-06-01T11:15:29","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=92131"},"modified":"2025-06-01T11:15:29","modified_gmt":"2025-06-01T11:15:29","slug":"in-which-of-the-following-are-hydrogels-used-select-the-correct-answ","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/","title":{"rendered":"In which of the following are hydrogels used ?\nSelect the correct answ"},"content":{"rendered":"<p>In which of the following are hydrogels used ?<br \/>\nSelect the correct answer using the code given below :<\/p>\n<ul>\n<li>Controlled drug delivery in patients<\/li>\n<li>Mobile air-conditioning systems<\/li>\n<li>Preparation of industrial lubricants<\/li>\n<\/ul>\n<p>[amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;1 and 2 only&#8221; option3=&#8221;2 and 3 only&#8221; option4=&#8221;1, 2 and 3&#8243; correct=&#8221;option4&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC IAS &#8211; 2024<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-ias-2024.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-ias-2024\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">The question asks in which of the listed activities hydrogels are used. Hydrogels are three-dimensional networks of hydrophilic polymers that can absorb large amounts of water or biological fluids. Their unique properties make them useful in various applications.<br \/>\n1.  Controlled drug delivery in patients: Hydrogels are extensively used in drug delivery systems. Drugs can be incorporated into the hydrogel matrix and released in a controlled manner as the hydrogel swells or degrades, allowing for sustained or targeted drug release. This is a well-established application.<br \/>\n2.  Mobile air-conditioning systems: Hydrogels can be used in certain types of cooling systems, particularly those involving moisture absorption and evaporation. For instance, they can be incorporated into evaporative cooling pads or desiccant systems for moisture removal, which is a component in some air conditioning or cooling technologies, including potentially mobile or portable systems exploring energy efficiency or alternative cooling methods. While not in traditional compressor-based ACs, they are used in specific advanced or niche cooling applications.<br \/>\n3.  Preparation of industrial lubricants: Certain hydrogels exhibit excellent lubricating properties, especially in aqueous environments. They can reduce friction between surfaces and are explored or used as lubricants in various industrial applications, particularly in machinery and biomedical devices where traditional oil-based lubricants are unsuitable. This is an established application.<br \/>\nBased on the known uses of hydrogels, all three activities are valid applications.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">Hydrogels are versatile materials due to their biocompatibility, flexibility, and high water content, making them suitable for applications ranging from biomedical engineering and agriculture to environmental science and industrial processes.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">Besides the listed applications, hydrogels are also used in areas such as tissue engineering (as scaffolds for cell growth), wound dressings (to maintain a moist environment), contact lenses, diapers and sanitary napkins (as superabsorbents), agriculture (for water retention in soil), and sensing (as responsive materials). The ability of hydrogels to respond to various stimuli (like temperature, pH, light) further expands their utility in smart systems like responsive drug delivery or sensors.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>In which of the following are hydrogels used ? Select the correct answer using the code given below : Controlled drug delivery in patients Mobile air-conditioning systems Preparation of industrial lubricants [amp_mcq option1=&#8221;1 only&#8221; option2=&#8221;1 and 2 only&#8221; option3=&#8221;2 and 3 only&#8221; option4=&#8221;1, 2 and 3&#8243; correct=&#8221;option4&#8243;] This question was previously asked in UPSC IAS &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"In which of the following are hydrogels used ?\nSelect the correct answ\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/#more-92131\">Detailed Solution<span class=\"screen-reader-text\">In which of the following are hydrogels used ?<br \/>\nSelect the correct answ<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1092],"tags":[1103,1096,1115],"class_list":["post-92131","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1103","tag-chemistry","tag-miscellaneous","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>In which of the following are hydrogels used ? Select the correct answ<\/title>\n<meta name=\"description\" content=\"The question asks in which of the listed activities hydrogels are used. Hydrogels are three-dimensional networks of hydrophilic polymers that can absorb large amounts of water or biological fluids. Their unique properties make them useful in various applications. 1. Controlled drug delivery in patients: Hydrogels are extensively used in drug delivery systems. Drugs can be incorporated into the hydrogel matrix and released in a controlled manner as the hydrogel swells or degrades, allowing for sustained or targeted drug release. This is a well-established application. 2. Mobile air-conditioning systems: Hydrogels can be used in certain types of cooling systems, particularly those involving moisture absorption and evaporation. For instance, they can be incorporated into evaporative cooling pads or desiccant systems for moisture removal, which is a component in some air conditioning or cooling technologies, including potentially mobile or portable systems exploring energy efficiency or alternative cooling methods. While not in traditional compressor-based ACs, they are used in specific advanced or niche cooling applications. 3. Preparation of industrial lubricants: Certain hydrogels exhibit excellent lubricating properties, especially in aqueous environments. They can reduce friction between surfaces and are explored or used as lubricants in various industrial applications, particularly in machinery and biomedical devices where traditional oil-based lubricants are unsuitable. This is an established application. Based on the known uses of hydrogels, all three activities are valid applications. Hydrogels are versatile materials due to their biocompatibility, flexibility, and high water content, making them suitable for applications ranging from biomedical engineering and agriculture to environmental science and industrial processes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"In which of the following are hydrogels used ? Select the correct answ\" \/>\n<meta property=\"og:description\" content=\"The question asks in which of the listed activities hydrogels are used. Hydrogels are three-dimensional networks of hydrophilic polymers that can absorb large amounts of water or biological fluids. Their unique properties make them useful in various applications. 1. Controlled drug delivery in patients: Hydrogels are extensively used in drug delivery systems. Drugs can be incorporated into the hydrogel matrix and released in a controlled manner as the hydrogel swells or degrades, allowing for sustained or targeted drug release. This is a well-established application. 2. Mobile air-conditioning systems: Hydrogels can be used in certain types of cooling systems, particularly those involving moisture absorption and evaporation. For instance, they can be incorporated into evaporative cooling pads or desiccant systems for moisture removal, which is a component in some air conditioning or cooling technologies, including potentially mobile or portable systems exploring energy efficiency or alternative cooling methods. While not in traditional compressor-based ACs, they are used in specific advanced or niche cooling applications. 3. Preparation of industrial lubricants: Certain hydrogels exhibit excellent lubricating properties, especially in aqueous environments. They can reduce friction between surfaces and are explored or used as lubricants in various industrial applications, particularly in machinery and biomedical devices where traditional oil-based lubricants are unsuitable. This is an established application. Based on the known uses of hydrogels, all three activities are valid applications. Hydrogels are versatile materials due to their biocompatibility, flexibility, and high water content, making them suitable for applications ranging from biomedical engineering and agriculture to environmental science and industrial processes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T11:15:29+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"In which of the following are hydrogels used ? Select the correct answ","description":"The question asks in which of the listed activities hydrogels are used. Hydrogels are three-dimensional networks of hydrophilic polymers that can absorb large amounts of water or biological fluids. Their unique properties make them useful in various applications. 1. Controlled drug delivery in patients: Hydrogels are extensively used in drug delivery systems. Drugs can be incorporated into the hydrogel matrix and released in a controlled manner as the hydrogel swells or degrades, allowing for sustained or targeted drug release. This is a well-established application. 2. Mobile air-conditioning systems: Hydrogels can be used in certain types of cooling systems, particularly those involving moisture absorption and evaporation. For instance, they can be incorporated into evaporative cooling pads or desiccant systems for moisture removal, which is a component in some air conditioning or cooling technologies, including potentially mobile or portable systems exploring energy efficiency or alternative cooling methods. While not in traditional compressor-based ACs, they are used in specific advanced or niche cooling applications. 3. Preparation of industrial lubricants: Certain hydrogels exhibit excellent lubricating properties, especially in aqueous environments. They can reduce friction between surfaces and are explored or used as lubricants in various industrial applications, particularly in machinery and biomedical devices where traditional oil-based lubricants are unsuitable. This is an established application. Based on the known uses of hydrogels, all three activities are valid applications. Hydrogels are versatile materials due to their biocompatibility, flexibility, and high water content, making them suitable for applications ranging from biomedical engineering and agriculture to environmental science and industrial processes.","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:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/","og_locale":"en_US","og_type":"article","og_title":"In which of the following are hydrogels used ? Select the correct answ","og_description":"The question asks in which of the listed activities hydrogels are used. Hydrogels are three-dimensional networks of hydrophilic polymers that can absorb large amounts of water or biological fluids. Their unique properties make them useful in various applications. 1. Controlled drug delivery in patients: Hydrogels are extensively used in drug delivery systems. Drugs can be incorporated into the hydrogel matrix and released in a controlled manner as the hydrogel swells or degrades, allowing for sustained or targeted drug release. This is a well-established application. 2. Mobile air-conditioning systems: Hydrogels can be used in certain types of cooling systems, particularly those involving moisture absorption and evaporation. For instance, they can be incorporated into evaporative cooling pads or desiccant systems for moisture removal, which is a component in some air conditioning or cooling technologies, including potentially mobile or portable systems exploring energy efficiency or alternative cooling methods. While not in traditional compressor-based ACs, they are used in specific advanced or niche cooling applications. 3. Preparation of industrial lubricants: Certain hydrogels exhibit excellent lubricating properties, especially in aqueous environments. They can reduce friction between surfaces and are explored or used as lubricants in various industrial applications, particularly in machinery and biomedical devices where traditional oil-based lubricants are unsuitable. This is an established application. Based on the known uses of hydrogels, all three activities are valid applications. Hydrogels are versatile materials due to their biocompatibility, flexibility, and high water content, making them suitable for applications ranging from biomedical engineering and agriculture to environmental science and industrial processes.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T11:15:29+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/","url":"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/","name":"In which of the following are hydrogels used ? Select the correct answ","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T11:15:29+00:00","dateModified":"2025-06-01T11:15:29+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The question asks in which of the listed activities hydrogels are used. Hydrogels are three-dimensional networks of hydrophilic polymers that can absorb large amounts of water or biological fluids. Their unique properties make them useful in various applications. 1. Controlled drug delivery in patients: Hydrogels are extensively used in drug delivery systems. Drugs can be incorporated into the hydrogel matrix and released in a controlled manner as the hydrogel swells or degrades, allowing for sustained or targeted drug release. This is a well-established application. 2. Mobile air-conditioning systems: Hydrogels can be used in certain types of cooling systems, particularly those involving moisture absorption and evaporation. For instance, they can be incorporated into evaporative cooling pads or desiccant systems for moisture removal, which is a component in some air conditioning or cooling technologies, including potentially mobile or portable systems exploring energy efficiency or alternative cooling methods. While not in traditional compressor-based ACs, they are used in specific advanced or niche cooling applications. 3. Preparation of industrial lubricants: Certain hydrogels exhibit excellent lubricating properties, especially in aqueous environments. They can reduce friction between surfaces and are explored or used as lubricants in various industrial applications, particularly in machinery and biomedical devices where traditional oil-based lubricants are unsuitable. This is an established application. Based on the known uses of hydrogels, all three activities are valid applications. Hydrogels are versatile materials due to their biocompatibility, flexibility, and high water content, making them suitable for applications ranging from biomedical engineering and agriculture to environmental science and industrial processes.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/in-which-of-the-following-are-hydrogels-used-select-the-correct-answ\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC IAS","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-ias\/"},{"@type":"ListItem","position":3,"name":"In which of the following are hydrogels used ? 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