{"id":87688,"date":"2025-06-01T06:51:17","date_gmt":"2025-06-01T06:51:17","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87688"},"modified":"2025-06-01T06:51:17","modified_gmt":"2025-06-01T06:51:17","slug":"tooth-enamel-is-made-up-of-which-one-of-the-following-calcium","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/tooth-enamel-is-made-up-of-which-one-of-the-following-calcium\/","title":{"rendered":"Tooth enamel is made up of which one of the following calcium"},"content":{"rendered":"

Tooth enamel is made up of which one of the following calcium compounds?<\/p>\n

[amp_mcq option1=”Calcium carbonate” option2=”Calcium sulphate” option3=”Calcium hydroxide” option4=”Calcium phosphate” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2019<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nTooth enamel is primarily made up of calcium phosphate in the form of crystalline hydroxyapatite.
\n<\/section>\n
\n– Tooth enamel is the outermost protective layer of the tooth.
\n– It is the hardest substance in the human body, mainly due to its high mineral content.
\n– The main mineral component is hydroxyapatite, which is a complex form of calcium phosphate with the chemical formula Ca\u2085(PO\u2084)\u2083(OH).
\n<\/section>\n
\nWhile calcium phosphate is the general type of compound, the specific crystalline structure is hydroxyapatite. Other forms of calcium phosphate exist, but hydroxyapatite is the key mineral in bones and teeth. Acids produced by bacteria in the mouth can dissolve the hydroxyapatite crystals, leading to tooth decay. Fluoride can help strengthen enamel by incorporating into the crystal structure, forming fluoroapatite, which is less soluble in acid.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Tooth enamel is made up of which one of the following calcium compounds? [amp_mcq option1=”Calcium carbonate” option2=”Calcium sulphate” option3=”Calcium hydroxide” option4=”Calcium phosphate” correct=”option4″] This question was previously asked in UPSC NDA-1 – 2019 Download PDFAttempt Online Tooth enamel is primarily made up of calcium phosphate in the form of crystalline hydroxyapatite. – Tooth enamel is … <\/p>\n

Detailed SolutionTooth enamel is made up of which one of the following calcium<\/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":[1093],"tags":[1119,1096,1148],"class_list":["post-87688","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1119","tag-chemistry","tag-food-preservation-nutrition-medicine-etc","no-featured-image-padding"],"yoast_head":"\nTooth enamel is made up of which one of the following calcium<\/title>\n<meta name=\"description\" content=\"Tooth enamel is primarily made up of calcium phosphate in the form of crystalline hydroxyapatite. - Tooth enamel is the outermost protective layer of the tooth. - It is the hardest substance in the human body, mainly due to its high mineral content. - The main mineral component is hydroxyapatite, which is a complex form of calcium phosphate with the chemical formula Ca\u2085(PO\u2084)\u2083(OH).\" \/>\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\/tooth-enamel-is-made-up-of-which-one-of-the-following-calcium\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tooth enamel is made up of which one of the following calcium\" \/>\n<meta property=\"og:description\" content=\"Tooth enamel is primarily made up of calcium phosphate in the form of crystalline hydroxyapatite. - Tooth enamel is the outermost protective layer of the tooth. - It is the hardest substance in the human body, mainly due to its high mineral content. - The main mineral component is hydroxyapatite, which is a complex form of calcium phosphate with the chemical formula Ca\u2085(PO\u2084)\u2083(OH).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/tooth-enamel-is-made-up-of-which-one-of-the-following-calcium\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:51:17+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":"Tooth enamel is made up of which one of the following calcium","description":"Tooth enamel is primarily made up of calcium phosphate in the form of crystalline hydroxyapatite. - 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