{"id":6552,"date":"2024-04-15T02:30:32","date_gmt":"2024-04-15T02:30:32","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=6552"},"modified":"2024-04-15T02:30:32","modified_gmt":"2024-04-15T02:30:32","slug":"pick-up-the-correct-statement-from-the-following-a-melamine-is-obtained-from-calcium-carbide-b-formaldehyde-is-prepared-synthetically-from-methane-c-the-melamine-when-reacted-with-formaldehyde-for","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/pick-up-the-correct-statement-from-the-following-a-melamine-is-obtained-from-calcium-carbide-b-formaldehyde-is-prepared-synthetically-from-methane-c-the-melamine-when-reacted-with-formaldehyde-for\/","title":{"rendered":"Pick up the correct statement from the following: A. Melamine is obtained from calcium carbide B. Formaldehyde is prepared synthetically from methane C. The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin D. All the above"},"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_6a99171fb206d\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Melamine is obtained from calcium carbide                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Formaldehyde is prepared synthetically from methane                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"true\">\r\n                    All the above                <\/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 D. All the above.<\/p>\n<p>Melamine is a white, crystalline solid that is used in a variety of products, including resins, adhesives, and fertilizers. It is obtained from calcium carbide, which is produced by heating calcium carbonate with coke. Formaldehyde is a colorless, flammable gas that is used in a variety of products, including plastics, resins, and adhesives. It is prepared synthetically from methane, which is a natural gas. When melamine is reacted with formaldehyde, it forms melamine-formaldehyde resin, which is a hard, durable material that is used in a variety of products, including countertops, furniture, and laminate flooring.<\/p>\n<p>Here is a more detailed explanation of each option:<\/p>\n<ul>\n<li>Option A: Melamine is obtained from calcium carbide. Calcium carbide is a white, crystalline solid that is produced by heating calcium carbonate with coke. Coke is a solid fuel that is produced from coal. When calcium carbonate is heated with coke, it forms calcium carbide and carbon dioxide. The calcium carbide is then <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> reacted with water to form melamine.<\/li>\n<li>Option B: Formaldehyde is prepared synthetically from methane. Methane is a colorless, odorless, flammable gas that is the simplest alkane. It is the main component of natural gas. When methane is heated to high temperatures, it reacts with oxygen to form carbon monoxide and hydrogen. The carbon monoxide is then reacted with hydrogen to form formaldehyde.<\/li>\n<li>Option C: The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin. Melamine is a white, crystalline solid that is used in a variety of products, <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> including resins, adhesives, and fertilizers. Formaldehyde is a colorless, flammable gas that is used in a variety of products, including plastics, resins, and adhesives. When melamine is reacted with formaldehyde, it forms melamine-formaldehyde resin, which is a hard, durable material that is used in a variety of products, including countertops, furniture, and laminate flooring.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel 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":[644],"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>Pick up the correct statement from the following: A. Melamine is obtained from calcium carbide B. Formaldehyde is prepared synthetically from methane C. The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin D. 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