{"id":88781,"date":"2025-06-01T07:21:06","date_gmt":"2025-06-01T07:21:06","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88781"},"modified":"2025-06-01T07:21:06","modified_gmt":"2025-06-01T07:21:06","slug":"what-is-the-colour-of-the-precipitate-obtained-by-passing-co%e2%82%82-gas-thro","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-colour-of-the-precipitate-obtained-by-passing-co%e2%82%82-gas-thro\/","title":{"rendered":"What is the colour of the precipitate obtained by passing CO\u2082 gas thro"},"content":{"rendered":"

What is the colour of the precipitate obtained by passing CO\u2082 gas through lime water ?<\/p>\n

[amp_mcq option1=”Green” option2=”Blue” option3=”White” option4=”Brown” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2021<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nLime water is an aqueous solution of calcium hydroxide (Ca(OH)\u2082). When carbon dioxide (CO\u2082) gas is passed through lime water, it reacts with calcium hydroxide to form calcium carbonate (CaCO\u2083) and water. Calcium carbonate is insoluble in water and precipitates out as a fine suspension, which appears white.
\n<\/section>\n
\n– Reaction: Ca(OH)\u2082(aq) + CO\u2082(g) \u2192 CaCO\u2083(s) + H\u2082O(l)
\n– Calcium carbonate (CaCO\u2083) is the precipitate formed.
\n– Calcium carbonate is a white solid.
\n<\/section>\n
\nIf CO\u2082 is passed through lime water for a prolonged period, the white precipitate of calcium carbonate dissolves as it reacts further with CO\u2082 and water to form soluble calcium bicarbonate (Ca(HCO\u2083)\u2082): CaCO\u2083(s) + H\u2082O(l) + CO\u2082(g) \u2192 Ca(HCO\u2083)\u2082(aq).
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

What is the colour of the precipitate obtained by passing CO\u2082 gas through lime water ? [amp_mcq option1=”Green” option2=”Blue” option3=”White” option4=”Brown” correct=”option3″] This question was previously asked in UPSC NDA-2 – 2021 Download PDFAttempt Online Lime water is an aqueous solution of calcium hydroxide (Ca(OH)\u2082). When carbon dioxide (CO\u2082) gas is passed through lime water, … <\/p>\n

Detailed SolutionWhat is the colour of the precipitate obtained by passing CO\u2082 gas thro<\/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":[1110,1096,1239],"class_list":["post-88781","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1110","tag-chemistry","tag-inorganic-chemistry","no-featured-image-padding"],"yoast_head":"\nWhat is the colour of the precipitate obtained by passing CO\u2082 gas thro<\/title>\n<meta name=\"description\" content=\"Lime water is an aqueous solution of calcium hydroxide (Ca(OH)\u2082). When carbon dioxide (CO\u2082) gas is passed through lime water, it reacts with calcium hydroxide to form calcium carbonate (CaCO\u2083) and water. Calcium carbonate is insoluble in water and precipitates out as a fine suspension, which appears white. - Reaction: Ca(OH)\u2082(aq) + CO\u2082(g) \u2192 CaCO\u2083(s) + H\u2082O(l) - Calcium carbonate (CaCO\u2083) is the precipitate formed. - Calcium carbonate is a white solid.\" \/>\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\/what-is-the-colour-of-the-precipitate-obtained-by-passing-co\u2082-gas-thro\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the colour of the precipitate obtained by passing CO\u2082 gas thro\" \/>\n<meta property=\"og:description\" content=\"Lime water is an aqueous solution of calcium hydroxide (Ca(OH)\u2082). When carbon dioxide (CO\u2082) gas is passed through lime water, it reacts with calcium hydroxide to form calcium carbonate (CaCO\u2083) and water. Calcium carbonate is insoluble in water and precipitates out as a fine suspension, which appears white. - Reaction: Ca(OH)\u2082(aq) + CO\u2082(g) \u2192 CaCO\u2083(s) + H\u2082O(l) - Calcium carbonate (CaCO\u2083) is the precipitate formed. - Calcium carbonate is a white solid.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-colour-of-the-precipitate-obtained-by-passing-co\u2082-gas-thro\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:21:06+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":"What is the colour of the precipitate obtained by passing CO\u2082 gas thro","description":"Lime water is an aqueous solution of calcium hydroxide (Ca(OH)\u2082). 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When carbon dioxide (CO\u2082) gas is passed through lime water, it reacts with calcium hydroxide to form calcium carbonate (CaCO\u2083) and water. Calcium carbonate is insoluble in water and precipitates out as a fine suspension, which appears white. - Reaction: Ca(OH)\u2082(aq) + CO\u2082(g) \u2192 CaCO\u2083(s) + H\u2082O(l) - Calcium carbonate (CaCO\u2083) is the precipitate formed. - Calcium carbonate is a white solid.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-colour-of-the-precipitate-obtained-by-passing-co\u2082-gas-thro\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:21:06+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-colour-of-the-precipitate-obtained-by-passing-co%e2%82%82-gas-thro\/","url":"https:\/\/exam.pscnotes.com\/mcq\/what-is-the-colour-of-the-precipitate-obtained-by-passing-co%e2%82%82-gas-thro\/","name":"What is the colour of the precipitate obtained by passing CO\u2082 gas thro","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:21:06+00:00","dateModified":"2025-06-01T07:21:06+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Lime water is an aqueous solution of calcium hydroxide (Ca(OH)\u2082). 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