{"id":89030,"date":"2025-06-01T07:28:03","date_gmt":"2025-06-01T07:28:03","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=89030"},"modified":"2025-06-01T07:28:03","modified_gmt":"2025-06-01T07:28:03","slug":"the-chemical-reaction2agcl-s-%e2%86%92-2ag-s-cl%e2%82%82-gtakes-place","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-chemical-reaction2agcl-s-%e2%86%92-2ag-s-cl%e2%82%82-gtakes-place\/","title":{"rendered":"The chemical reaction:\n2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g)\ntakes place"},"content":{"rendered":"

The chemical reaction:
\n2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g)
\ntakes place<\/p>\n

[amp_mcq option1=”in dark” option2=”in sunlight” option3=”on heating” option4=”under high pressure” correct=”option2″]<\/p>\n

\n
\n
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
\nThe correct answer is B) in sunlight.
\n<\/section>\n
\nThe chemical reaction shown, 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g), is the decomposition of silver chloride into silver and chlorine gas. Silver halides like silver chloride (AgCl) and silver bromide (AgBr) are known to be sensitive to light. This decomposition reaction is catalyzed by light, particularly sunlight or bright artificial light. This property is fundamental to traditional black and white photography where silver halides in photographic film undergo decomposition upon exposure to light, forming a latent image.
\n<\/section>\n
\nThis type of decomposition reaction, which occurs in the presence of light, is called a photolytic decomposition reaction. While some decomposition reactions occur on heating (thermolysis), the decomposition of silver chloride is prominently triggered by light energy. Dark conditions prevent this reaction. High pressure would likely favour the solid reactant over the gaseous product, not cause decomposition.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

The chemical reaction: 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g) takes place [amp_mcq option1=”in dark” option2=”in sunlight” option3=”on heating” option4=”under high pressure” correct=”option2″] This question was previously asked in UPSC NDA-2 – 2024 Download PDFAttempt Online The correct answer is B) in sunlight. The chemical reaction shown, 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 … <\/p>\n

Detailed SolutionThe chemical reaction:
\n2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g)
\ntakes place<\/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-89030","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":"\nThe chemical reaction: 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g) takes place<\/title>\n<meta name=\"description\" content=\"The correct answer is B) in sunlight. The chemical reaction shown, 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g), is the decomposition of silver chloride into silver and chlorine gas. Silver halides like silver chloride (AgCl) and silver bromide (AgBr) are known to be sensitive to light. This decomposition reaction is catalyzed by light, particularly sunlight or bright artificial light. This property is fundamental to traditional black and white photography where silver halides in photographic film undergo decomposition upon exposure to light, forming a latent image.\" \/>\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-chemical-reaction2agcl-s-\u2192-2ag-s-cl\u2082-gtakes-place\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The chemical reaction: 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g) takes place\" \/>\n<meta property=\"og:description\" content=\"The correct answer is B) in sunlight. The chemical reaction shown, 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g), is the decomposition of silver chloride into silver and chlorine gas. Silver halides like silver chloride (AgCl) and silver bromide (AgBr) are known to be sensitive to light. This decomposition reaction is catalyzed by light, particularly sunlight or bright artificial light. This property is fundamental to traditional black and white photography where silver halides in photographic film undergo decomposition upon exposure to light, forming a latent image.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-chemical-reaction2agcl-s-\u2192-2ag-s-cl\u2082-gtakes-place\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:28:03+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":"The chemical reaction: 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g) takes place","description":"The correct answer is B) in sunlight. The chemical reaction shown, 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g), is the decomposition of silver chloride into silver and chlorine gas. Silver halides like silver chloride (AgCl) and silver bromide (AgBr) are known to be sensitive to light. This decomposition reaction is catalyzed by light, particularly sunlight or bright artificial light. This property is fundamental to traditional black and white photography where silver halides in photographic film undergo decomposition upon exposure to light, forming a latent image.","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\/the-chemical-reaction2agcl-s-\u2192-2ag-s-cl\u2082-gtakes-place\/","og_locale":"en_US","og_type":"article","og_title":"The chemical reaction: 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g) takes place","og_description":"The correct answer is B) in sunlight. The chemical reaction shown, 2AgCl (s) \u2192 2Ag (s) + Cl\u2082 (g), is the decomposition of silver chloride into silver and chlorine gas. Silver halides like silver chloride (AgCl) and silver bromide (AgBr) are known to be sensitive to light. This decomposition reaction is catalyzed by light, particularly sunlight or bright artificial light. 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