{"id":88276,"date":"2025-06-01T07:06:56","date_gmt":"2025-06-01T07:06:56","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88276"},"modified":"2025-06-01T07:06:56","modified_gmt":"2025-06-01T07:06:56","slug":"when-one-strikes-a-safety-match-the-first-step-is","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/when-one-strikes-a-safety-match-the-first-step-is\/","title":{"rendered":"When one strikes a safety match, the first step is"},"content":{"rendered":"

When one strikes a safety match, the first step is<\/p>\n

[amp_mcq option1=”burning of sulfur” option2=”decomposition of potassium chlorate into potassium chloride and oxygen” option3=”conversion of a small amount of red phosphorus into white phosphorus” option4=”burning of glue and starch” correct=”option3″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC NDA-2 – 2016<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
When one strikes a safety match, the first step (after generating friction) is the conversion of a small amount of red phosphorus into white phosphorus.<\/section>\n
A safety match head contains oxidizer (like KClO\u2083), fuel (sulfur), and binder. The striking surface contains red phosphorus, glass powder, and binder. Striking the head against the surface creates friction, which generates heat. This heat energy is sufficient to convert a tiny amount of red phosphorus on the strip into the highly reactive white phosphorus, which ignites instantly in air. This initial ignition then provides the heat to decompose the potassium chlorate in the match head, releasing oxygen, which oxidizes the sulfur, causing the main flame.<\/section>\n
Burning of sulfur (A), decomposition of potassium chlorate (B), and burning of glue\/starch (D – part of the binder) are subsequent steps that occur after the initial ignition triggered by the red phosphorus\/white phosphorus conversion.<\/section>\n","protected":false},"excerpt":{"rendered":"

When one strikes a safety match, the first step is [amp_mcq option1=”burning of sulfur” option2=”decomposition of potassium chlorate into potassium chloride and oxygen” option3=”conversion of a small amount of red phosphorus into white phosphorus” option4=”burning of glue and starch” correct=”option3″] This question was previously asked in UPSC NDA-2 – 2016 Download PDFAttempt Online When one … <\/p>\n

Detailed SolutionWhen one strikes a safety match, the first step is<\/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":[1094],"tags":[1098,1096,1444],"class_list":["post-88276","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1098","tag-chemistry","tag-the-explosive-substances","no-featured-image-padding"],"yoast_head":"\nWhen one strikes a safety match, the first step is<\/title>\n<meta name=\"description\" content=\"When one strikes a safety match, the first step (after generating friction) is the conversion of a small amount of red phosphorus into white phosphorus. A safety match head contains oxidizer (like KClO\u2083), fuel (sulfur), and binder. The striking surface contains red phosphorus, glass powder, and binder. Striking the head against the surface creates friction, which generates heat. This heat energy is sufficient to convert a tiny amount of red phosphorus on the strip into the highly reactive white phosphorus, which ignites instantly in air. This initial ignition then provides the heat to decompose the potassium chlorate in the match head, releasing oxygen, which oxidizes the sulfur, causing the main flame.\" \/>\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\/when-one-strikes-a-safety-match-the-first-step-is\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"When one strikes a safety match, the first step is\" \/>\n<meta property=\"og:description\" content=\"When one strikes a safety match, the first step (after generating friction) is the conversion of a small amount of red phosphorus into white phosphorus. A safety match head contains oxidizer (like KClO\u2083), fuel (sulfur), and binder. The striking surface contains red phosphorus, glass powder, and binder. Striking the head against the surface creates friction, which generates heat. This heat energy is sufficient to convert a tiny amount of red phosphorus on the strip into the highly reactive white phosphorus, which ignites instantly in air. This initial ignition then provides the heat to decompose the potassium chlorate in the match head, releasing oxygen, which oxidizes the sulfur, causing the main flame.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/when-one-strikes-a-safety-match-the-first-step-is\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:06:56+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=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"When one strikes a safety match, the first step is","description":"When one strikes a safety match, the first step (after generating friction) is the conversion of a small amount of red phosphorus into white phosphorus. 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A safety match head contains oxidizer (like KClO\u2083), fuel (sulfur), and binder. The striking surface contains red phosphorus, glass powder, and binder. Striking the head against the surface creates friction, which generates heat. This heat energy is sufficient to convert a tiny amount of red phosphorus on the strip into the highly reactive white phosphorus, which ignites instantly in air. 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