{"id":89084,"date":"2025-06-01T07:29:04","date_gmt":"2025-06-01T07:29:04","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=89084"},"modified":"2025-06-01T07:29:04","modified_gmt":"2025-06-01T07:29:04","slug":"which-one-among-the-following-is-an-example-of-oxidation-reaction","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-among-the-following-is-an-example-of-oxidation-reaction\/","title":{"rendered":"Which one among the following is an example of oxidation reaction ?"},"content":{"rendered":"

Which one among the following is an example of oxidation reaction ?<\/p>\n

[amp_mcq option1=”Freezing of water” option2=”Dissolving sugar in water” option3=”Rusting of iron” option4=”Boiling of petrol” correct=”option3″]<\/p>\n

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This question was previously asked in<\/div>\n
UPSC NDA-2 – 2024<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nOxidation is a chemical reaction where a substance loses electrons or its oxidation state increases. Rusting of iron is the process where iron reacts with oxygen and water to form hydrated iron(III) oxides, commonly known as rust. This is a chemical change where iron is oxidized from its elemental state (oxidation state 0) to an oxidation state of +3 in the iron oxides. Freezing of water, dissolving sugar, and boiling of petrol are physical changes or processes, not chemical reactions involving oxidation in the typical sense tested in such questions.
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\nAn oxidation reaction involves the loss of electrons or an increase in oxidation state. Chemical changes result in the formation of new substances. Physical changes alter the form or appearance but not the chemical composition.
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\nRusting is a specific type of corrosion, which is an electrochemical process. The chemical equation for the formation of rust is complex, but the overall process involves the oxidation of iron: Fe \u2192 Fe\u00b3\u207a + 3e\u207b, and the reduction of oxygen.
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Which one among the following is an example of oxidation reaction ? [amp_mcq option1=”Freezing of water” option2=”Dissolving sugar in water” option3=”Rusting of iron” option4=”Boiling of petrol” correct=”option3″] This question was previously asked in UPSC NDA-2 – 2024 Download PDFAttempt Online Oxidation is a chemical reaction where a substance loses electrons or its oxidation state increases. … <\/p>\n

Detailed SolutionWhich one among the following is an example of oxidation reaction ?<\/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":[1103,1096,1155],"class_list":["post-89084","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1103","tag-chemistry","tag-physical-and-chemical-changes-solution","no-featured-image-padding"],"yoast_head":"\nWhich one among the following is an example of oxidation reaction ?<\/title>\n<meta name=\"description\" content=\"Oxidation is a chemical reaction where a substance loses electrons or its oxidation state increases. Rusting of iron is the process where iron reacts with oxygen and water to form hydrated iron(III) oxides, commonly known as rust. This is a chemical change where iron is oxidized from its elemental state (oxidation state 0) to an oxidation state of +3 in the iron oxides. Freezing of water, dissolving sugar, and boiling of petrol are physical changes or processes, not chemical reactions involving oxidation in the typical sense tested in such questions. An oxidation reaction involves the loss of electrons or an increase in oxidation state. Chemical changes result in the formation of new substances. Physical changes alter the form or appearance but not the chemical composition.\" \/>\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\/which-one-among-the-following-is-an-example-of-oxidation-reaction\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one among the following is an example of oxidation reaction ?\" \/>\n<meta property=\"og:description\" content=\"Oxidation is a chemical reaction where a substance loses electrons or its oxidation state increases. Rusting of iron is the process where iron reacts with oxygen and water to form hydrated iron(III) oxides, commonly known as rust. This is a chemical change where iron is oxidized from its elemental state (oxidation state 0) to an oxidation state of +3 in the iron oxides. Freezing of water, dissolving sugar, and boiling of petrol are physical changes or processes, not chemical reactions involving oxidation in the typical sense tested in such questions. An oxidation reaction involves the loss of electrons or an increase in oxidation state. Chemical changes result in the formation of new substances. 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Physical changes alter the form or appearance but not the chemical composition.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/which-one-among-the-following-is-an-example-of-oxidation-reaction\/","og_locale":"en_US","og_type":"article","og_title":"Which one among the following is an example of oxidation reaction ?","og_description":"Oxidation is a chemical reaction where a substance loses electrons or its oxidation state increases. Rusting of iron is the process where iron reacts with oxygen and water to form hydrated iron(III) oxides, commonly known as rust. This is a chemical change where iron is oxidized from its elemental state (oxidation state 0) to an oxidation state of +3 in the iron oxides. 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Rusting of iron is the process where iron reacts with oxygen and water to form hydrated iron(III) oxides, commonly known as rust. This is a chemical change where iron is oxidized from its elemental state (oxidation state 0) to an oxidation state of +3 in the iron oxides. Freezing of water, dissolving sugar, and boiling of petrol are physical changes or processes, not chemical reactions involving oxidation in the typical sense tested in such questions. An oxidation reaction involves the loss of electrons or an increase in oxidation state. Chemical changes result in the formation of new substances. 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