{"id":87866,"date":"2025-06-01T06:55:50","date_gmt":"2025-06-01T06:55:50","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87866"},"modified":"2025-06-01T06:55:50","modified_gmt":"2025-06-01T06:55:50","slug":"which-one-of-the-following-is-the-colour-of-hydrogen-gas","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-colour-of-hydrogen-gas\/","title":{"rendered":"Which one of the following is the colour of hydrogen gas?"},"content":{"rendered":"

Which one of the following is the colour of hydrogen gas?<\/p>\n

[amp_mcq option1=”Light yellow” option2=”Orange” option3=”Black” option4=”Colourless” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2022<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is Colourless. Hydrogen gas (H\u2082) is a colourless gas.
\n<\/section>\n
\n– Hydrogen is the lightest and most abundant element in the universe.
\n– At standard temperature and pressure, hydrogen exists as a diatomic molecule (H\u2082) and is a gas.
\n– Pure hydrogen gas is colourless, odourless, and tasteless.
\n– It is also highly flammable.
\n<\/section>\n
\nMany common gases like nitrogen (N\u2082), oxygen (O\u2082), noble gases (He, Ne, Ar, etc.), and carbon dioxide (CO\u2082) are also colourless. Some gases do have colour, such as chlorine (greenish-yellow), bromine vapour (reddish-brown), iodine vapour (violet), and nitrogen dioxide (reddish-brown).
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following is the colour of hydrogen gas? [amp_mcq option1=”Light yellow” option2=”Orange” option3=”Black” option4=”Colourless” correct=”option4″] This question was previously asked in UPSC NDA-1 – 2022 Download PDFAttempt Online The correct answer is Colourless. Hydrogen gas (H\u2082) is a colourless gas. – Hydrogen is the lightest and most abundant element in the universe. … <\/p>\n

Detailed SolutionWhich one of the following is the colour of hydrogen gas?<\/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":[1108,1096,1161],"class_list":["post-87866","post","type-post","status-publish","format-standard","hentry","category-upsc-nda-1","tag-1108","tag-chemistry","tag-hydrogen-and-its-compounds","no-featured-image-padding"],"yoast_head":"\nWhich one of the following is the colour of hydrogen gas?<\/title>\n<meta name=\"description\" content=\"The correct answer is Colourless. Hydrogen gas (H\u2082) is a colourless gas. - Hydrogen is the lightest and most abundant element in the universe. - At standard temperature and pressure, hydrogen exists as a diatomic molecule (H\u2082) and is a gas. - Pure hydrogen gas is colourless, odourless, and tasteless. - It is also highly flammable.\" \/>\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-is-the-colour-of-hydrogen-gas\/\" \/>\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 is the colour of hydrogen gas?\" \/>\n<meta property=\"og:description\" content=\"The correct answer is Colourless. Hydrogen gas (H\u2082) is a colourless gas. - Hydrogen is the lightest and most abundant element in the universe. - At standard temperature and pressure, hydrogen exists as a diatomic molecule (H\u2082) and is a gas. - Pure hydrogen gas is colourless, odourless, and tasteless. - It is also highly flammable.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-is-the-colour-of-hydrogen-gas\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T06:55:50+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 is the colour of hydrogen gas?","description":"The correct answer is Colourless. 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