{"id":6537,"date":"2024-04-15T02:30:19","date_gmt":"2024-04-15T02:30:19","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=6537"},"modified":"2024-04-15T02:30:19","modified_gmt":"2024-04-15T02:30:19","slug":"pick-up-the-correct-statement-from-the-following-a-blisters-in-the-finished-wrought-iron-are-caused-due-to-the-reaction-between-oxide-of-iron-and-carbon-b-the-edges-of-a-finished-wrought-iron-are","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/pick-up-the-correct-statement-from-the-following-a-blisters-in-the-finished-wrought-iron-are-caused-due-to-the-reaction-between-oxide-of-iron-and-carbon-b-the-edges-of-a-finished-wrought-iron-are\/","title":{"rendered":"Pick up the correct statement from the following: A. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon B. The edges of a finished wrought iron are rough due to red shortage C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4) 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_6a9a11431dbfa\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"false\">\r\n                    Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    The edges of a finished wrought iron are rough due to red shortage                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)                <\/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>Blisters in the finished wrought iron are caused due to the reaction between oxide of iron and carbon. This reaction is called oxidation. When iron is heated in the presence of oxygen, it reacts to form iron oxide. This reaction is exothermic, which means that it releases heat. The heat from the reaction causes the iron oxide to expand, which can cause blisters to form on the surface of the iron.<\/p>\n<p>The edges of a finished wrought iron are rough due to red shortage. This is because the iron is not heated <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> evenly during the forging process. The edges of the iron are heated more than the center, which causes them to expand more. This expansion causes the edges of the iron to become rough.<\/p>\n<p>Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4). This is done by heating the magnetic ore in a furnace in the presence of carbon. The carbon reacts with the oxygen in the magnetic ore to form carbon monoxide. The carbon monoxide then reacts with the iron in the magnetic ore to form pig iron.<\/p>\n<p>I hope this explanation is helpful. Please let me know if you have any other questions.<\/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":[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. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon B. The edges of a finished wrought iron are rough due to red shortage C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4) D. 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