{"id":23327,"date":"2024-04-15T06:32:12","date_gmt":"2024-04-15T06:32:12","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=23327"},"modified":"2024-04-15T06:32:12","modified_gmt":"2024-04-15T06:32:12","slug":"assertion-a-synthetic-detergents-can-lather-when-in-hard-water-reason-r-synthetic-detergents-form-soluble-calcium-and-magnesium-salts-with-hard-water-a-both-a-and-r-is-true-and-r-is-the-cor","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/assertion-a-synthetic-detergents-can-lather-when-in-hard-water-reason-r-synthetic-detergents-form-soluble-calcium-and-magnesium-salts-with-hard-water-a-both-a-and-r-is-true-and-r-is-the-cor\/","title":{"rendered":"Assertion (A) : Synthetic detergents can lather when in hard water. Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water. A. Both A and R is true and R is the correct explanation of A B. Both A and R is true but R is not a correct explanation of A C. A is true but R is false D. A is false but R is true"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6aaf93eecb5d3\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Both A and R is true and R is the correct explanation of A                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"true\">\r\n                    Both A and R is true but R is not a correct explanation of A                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    A is true but R is false                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    A is false but R is true                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is: <strong>Both A and R are true but R is not a correct explanation of A.<\/strong><\/p>\n<p>Synthetic detergents can lather when in hard water because they are made with long, hydrocarbon chains that are able to form micelles. Micelles are spherical aggregates of detergent molecules with the hydrophobic tails pointing inward and the hydrophilic heads pointing outward. This allows the detergent molecules to surround and remove dirt and oil from surfaces.<\/p>\n<p>However, the formation of micelles is also affected by the presence of calcium and magnesium ions in hard water. These ions can bind to the hydrophobic tails of the detergent molecules, preventing them from forming micelles. This results in a decrease in the amount of lather that is produced.<\/p>\n<p>Therefore, both A and R are true. However, R is not a correct explanation of A. The formation of micelles is not the only factor that affects the ability of detergents to <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> lather in hard water. The presence of calcium and magnesium ions also plays a role.<\/p>\n<p>Here is a more detailed explanation of each option:<\/p>\n<ul>\n<li><strong>Both A and R are true <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> and R is the correct explanation of A.<\/strong> This option is incorrect because R is not a correct explanation of A. The formation of micelles is not the only factor that affects the ability of detergents to lather in hard water. The presence of calcium and magnesium ions also plays a role.<\/li>\n<li><strong>Both A and R are true but R is not a correct explanation of A.<\/strong> This option is correct because both A and R are true, but R is not a correct explanation of A.<\/li>\n<li><strong>A is true but R is false.<\/strong> This option is incorrect because R is true.<\/li>\n<li><strong>A is false but R is true.<\/strong> This option is incorrect because A is true.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"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>Assertion (A) : Synthetic detergents can lather when in hard water. Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water. A. Both A and R is true and R is the correct explanation of A B. Both A and R is true but R is not a correct explanation of A C. A is true but R is false D. A is false but R is true<\/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:\/\/exam.pscnotes.com\/mcq\/assertion-a-synthetic-detergents-can-lather-when-in-hard-water-reason-r-synthetic-detergents-form-soluble-calcium-and-magnesium-salts-with-hard-water-a-both-a-and-r-is-true-and-r-is-the-cor\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Assertion (A) : Synthetic detergents can lather when in hard water. Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water. A. 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