{"id":5452,"date":"2024-04-15T02:13:46","date_gmt":"2024-04-15T02:13:46","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=5452"},"modified":"2024-04-15T02:13:46","modified_gmt":"2024-04-15T02:13:46","slug":"the-compound-to-which-h2-does-not-add-is-a-biphenyl-ethylene-b-tetraphenyl-ethylene-c-tetra-9-naphthylethylene-d-tetra-9-phenanthrylethylene","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-compound-to-which-h2-does-not-add-is-a-biphenyl-ethylene-b-tetraphenyl-ethylene-c-tetra-9-naphthylethylene-d-tetra-9-phenanthrylethylene\/","title":{"rendered":"The compound to which H2 does not add is A. biphenyl ethylene B. tetraphenyl ethylene C. tetra-9-naphthylethylene D. tetra-9-phenanthrylethylene"},"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_6a98c843e8473\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    biphenyl ethylene                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    tetraphenyl ethylene                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    tetra-9-naphthylethylene                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    tetra-9-phenanthrylethylene                <\/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 $\\boxed{\\text{C}}$, tetra-9-naphthylethylene.<\/p>\n<p>H2 addition is a reaction in which hydrogen gas is added to a double bond. This reaction is typically used to reduce double <div class=\"youtube-subscribe-container\">\r\n     <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>    <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> bonds to single bonds. In order for H2 addition to occur, the double bond must be in a position where the hydrogen atoms can approach the carbon atoms without steric hindrance.<\/p>\n<p>In biphenyl ethylene, the double bond is located between two phenyl groups. The phenyl groups are large and bulky, so they sterically hinder the approach of the hydrogen atoms. This prevents H2 addition from occurring.<\/p>\n<p>In tetraphenyl ethylene, the double bond is located between two phenyl groups and a hydrogen atom. The hydrogen atom is small enough to approach the carbon atoms without steric hindrance. This allows H2 addition to occur.<\/p>\n<p>In tetra-9-naphthylethylene, the double bond is located between two naphthyl groups. The naphthyl groups are larger and bulkier than the phenyl groups, so they sterically hinder the approach of the hydrogen atoms even more than the phenyl groups do. This prevents H2 addition from occurring.<\/p>\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":[637],"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>The compound to which H2 does not add is A. biphenyl ethylene B. tetraphenyl ethylene C. tetra-9-naphthylethylene D. tetra-9-phenanthrylethylene<\/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\/the-compound-to-which-h2-does-not-add-is-a-biphenyl-ethylene-b-tetraphenyl-ethylene-c-tetra-9-naphthylethylene-d-tetra-9-phenanthrylethylene\/\" \/>\n<meta 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