{"id":86368,"date":"2025-06-01T03:45:25","date_gmt":"2025-06-01T03:45:25","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86368"},"modified":"2025-06-01T03:45:25","modified_gmt":"2025-06-01T03:45:25","slug":"which-one-of-the-following-processes-leads-to-expansion-of-certain-min","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-processes-leads-to-expansion-of-certain-min\/","title":{"rendered":"Which one of the following processes leads to expansion of certain min"},"content":{"rendered":"

Which one of the following processes leads to expansion of certain minerals as they take up water, causing additional stress in the rock ?<\/p>\n

[amp_mcq option1=”Hydrolysis” option2=”Hydration” option3=”Oxidation” option4=”Carbonation” correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CDS-2 – 2022<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is B) Hydration.
\n<\/section>\n
\nHydration is a form of chemical weathering where water molecules are added to the molecular structure of a mineral. Some minerals, like gypsum, anhydrite, and certain clay minerals, absorb water and expand in volume as they are hydrated. This increase in volume creates stress within the rock, which can lead to disintegration and breakdown.
\n<\/section>\n
\nHydrolysis involves the reaction of water with minerals, specifically where water splits into H+ and OH- ions that react with the mineral’s components (e.g., feldspar weathering into clay). Oxidation is the reaction of minerals with oxygen, often leading to the formation of rust (iron oxides). Carbonation is the reaction of carbonic acid (H\u2082CO\u2083), formed by CO\u2082 dissolving in water, with minerals, particularly carbonates like calcite. While all are chemical weathering processes, Hydration is the specific process leading to the expansion of minerals upon taking up water.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following processes leads to expansion of certain minerals as they take up water, causing additional stress in the rock ? [amp_mcq option1=”Hydrolysis” option2=”Hydration” option3=”Oxidation” option4=”Carbonation” correct=”option2″] This question was previously asked in UPSC CDS-2 – 2022 Download PDFAttempt Online The correct answer is B) Hydration. Hydration is a form of chemical … <\/p>\n

Detailed SolutionWhich one of the following processes leads to expansion of certain min<\/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":[1088],"tags":[1108,1144,1106],"class_list":["post-86368","post","type-post","status-publish","format-standard","hentry","category-upsc-cds-2","tag-1108","tag-rocks-and-earth-sciences","tag-world-and-physical-geography","no-featured-image-padding"],"yoast_head":"\nWhich one of the following processes leads to expansion of certain min<\/title>\n<meta name=\"description\" content=\"The correct answer is B) Hydration. Hydration is a form of chemical weathering where water molecules are added to the molecular structure of a mineral. Some minerals, like gypsum, anhydrite, and certain clay minerals, absorb water and expand in volume as they are hydrated. This increase in volume creates stress within the rock, which can lead to disintegration and breakdown.\" \/>\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-of-the-following-processes-leads-to-expansion-of-certain-min\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which one of the following processes leads to expansion of certain min\" \/>\n<meta property=\"og:description\" content=\"The correct answer is B) Hydration. Hydration is a form of chemical weathering where water molecules are added to the molecular structure of a mineral. Some minerals, like gypsum, anhydrite, and certain clay minerals, absorb water and expand in volume as they are hydrated. 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