{"id":88539,"date":"2025-06-01T07:14:13","date_gmt":"2025-06-01T07:14:13","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=88539"},"modified":"2025-06-01T07:14:13","modified_gmt":"2025-06-01T07:14:13","slug":"which-one-of-the-following-statements-about-water-is-not-true","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-about-water-is-not-true\/","title":{"rendered":"Which one of the following statements about water is not true ?"},"content":{"rendered":"

Which one of the following statements about water is not true ?<\/p>\n

[amp_mcq option1=”Hydrogen bonds are present in liquid water.” option2=”Water has a high boiling point.” option3=”Water has a high heat of fusion.” option4=”Water is a non-polar molecule.” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-2 – 2019<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nStatement D, “Water is a non-polar molecule”, is not true. Water (H2O) has a bent molecular geometry due to the presence of two lone pairs on the oxygen atom. The O-H covalent bonds are polar because oxygen is more electronegative than hydrogen. Because of the bent shape, the bond dipoles do not cancel out, resulting in a net dipole moment for the entire molecule. Therefore, water is a polar molecule.
\n<\/section>\n
\n– Water is a polar molecule due to its bent structure and polar covalent bonds.
\n– The polarity and the presence of hydrogen atoms bonded to a highly electronegative oxygen atom enable hydrogen bonding between water molecules.
\n– Hydrogen bonding is responsible for many of water’s unusual properties, such as high boiling point, high heat of fusion, high specific heat capacity, and high surface tension.
\n<\/section>\n
\n– Statement A is true; hydrogen bonds are extensive in liquid water, forming a dynamic network.
\n– Statement B is true; water has an exceptionally high boiling point (100\u00b0C at 1 atm) compared to other molecules of similar size and molar mass without hydrogen bonding (e.g., H2S, which boils at -60\u00b0C).
\n– Statement C is true; water requires a significant amount of energy to melt (heat of fusion) due to the need to break hydrogen bonds holding the ice lattice together.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following statements about water is not true ? [amp_mcq option1=”Hydrogen bonds are present in liquid water.” option2=”Water has a high boiling point.” option3=”Water has a high heat of fusion.” option4=”Water is a non-polar molecule.” correct=”option4″] This question was previously asked in UPSC NDA-2 – 2019 Download PDFAttempt Online Statement D, “Water … <\/p>\n

Detailed SolutionWhich one of the following statements about water is not true ?<\/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":[1119,1096,1161],"class_list":["post-88539","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-2","tag-1119","tag-chemistry","tag-hydrogen-and-its-compounds","no-featured-image-padding"],"yoast_head":"\nWhich one of the following statements about water is not true ?<\/title>\n<meta name=\"description\" content=\"Statement D, "Water is a non-polar molecule", is not true. Water (H2O) has a bent molecular geometry due to the presence of two lone pairs on the oxygen atom. The O-H covalent bonds are polar because oxygen is more electronegative than hydrogen. Because of the bent shape, the bond dipoles do not cancel out, resulting in a net dipole moment for the entire molecule. Therefore, water is a polar molecule. - Water is a polar molecule due to its bent structure and polar covalent bonds. - The polarity and the presence of hydrogen atoms bonded to a highly electronegative oxygen atom enable hydrogen bonding between water molecules. - Hydrogen bonding is responsible for many of water's unusual properties, such as high boiling point, high heat of fusion, high specific heat capacity, and high surface tension.\" \/>\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-statements-about-water-is-not-true\/\" \/>\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 statements about water is not true ?\" \/>\n<meta property=\"og:description\" content=\"Statement D, "Water is a non-polar molecule", is not true. Water (H2O) has a bent molecular geometry due to the presence of two lone pairs on the oxygen atom. The O-H covalent bonds are polar because oxygen is more electronegative than hydrogen. Because of the bent shape, the bond dipoles do not cancel out, resulting in a net dipole moment for the entire molecule. Therefore, water is a polar molecule. - Water is a polar molecule due to its bent structure and polar covalent bonds. - The polarity and the presence of hydrogen atoms bonded to a highly electronegative oxygen atom enable hydrogen bonding between water molecules. - Hydrogen bonding is responsible for many of water's unusual properties, such as high boiling point, high heat of fusion, high specific heat capacity, and high surface tension.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-about-water-is-not-true\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T07:14:13+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":"Which one of the following statements about water is not true ?","description":"Statement D, \"Water is a non-polar molecule\", is not true. Water (H2O) has a bent molecular geometry due to the presence of two lone pairs on the oxygen atom. The O-H covalent bonds are polar because oxygen is more electronegative than hydrogen. Because of the bent shape, the bond dipoles do not cancel out, resulting in a net dipole moment for the entire molecule. Therefore, water is a polar molecule. - Water is a polar molecule due to its bent structure and polar covalent bonds. - The polarity and the presence of hydrogen atoms bonded to a highly electronegative oxygen atom enable hydrogen bonding between water molecules. - Hydrogen bonding is responsible for many of water's unusual properties, such as high boiling point, high heat of fusion, high specific heat capacity, and high surface tension.","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-of-the-following-statements-about-water-is-not-true\/","og_locale":"en_US","og_type":"article","og_title":"Which one of the following statements about water is not true ?","og_description":"Statement D, \"Water is a non-polar molecule\", is not true. Water (H2O) has a bent molecular geometry due to the presence of two lone pairs on the oxygen atom. The O-H covalent bonds are polar because oxygen is more electronegative than hydrogen. Because of the bent shape, the bond dipoles do not cancel out, resulting in a net dipole moment for the entire molecule. Therefore, water is a polar molecule. - Water is a polar molecule due to its bent structure and polar covalent bonds. - The polarity and the presence of hydrogen atoms bonded to a highly electronegative oxygen atom enable hydrogen bonding between water molecules. - Hydrogen bonding is responsible for many of water's unusual properties, such as high boiling point, high heat of fusion, high specific heat capacity, and high surface tension.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-about-water-is-not-true\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T07:14:13+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\/which-one-of-the-following-statements-about-water-is-not-true\/","url":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-statements-about-water-is-not-true\/","name":"Which one of the following statements about water is not true ?","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T07:14:13+00:00","dateModified":"2025-06-01T07:14:13+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"Statement D, \"Water is a non-polar molecule\", is not true. Water (H2O) has a bent molecular geometry due to the presence of two lone pairs on the oxygen atom. The O-H covalent bonds are polar because oxygen is more electronegative than hydrogen. Because of the bent shape, the bond dipoles do not cancel out, resulting in a net dipole moment for the entire molecule. 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