{"id":90456,"date":"2025-06-01T10:28:57","date_gmt":"2025-06-01T10:28:57","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=90456"},"modified":"2025-06-01T10:28:57","modified_gmt":"2025-06-01T10:28:57","slug":"which-one-of-the-following-gases-produces-a-red-light-when-electricity","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-gases-produces-a-red-light-when-electricity\/","title":{"rendered":"Which one of the following gases produces a red light when electricity"},"content":{"rendered":"

Which one of the following gases produces a red light when electricity flows through it ?<\/p>\n

[amp_mcq option1=”Helium” option2=”Argon” option3=”Nitrogen” option4=”Neon” correct=”option4″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC CAPF – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nNeon gas produces a red light when electricity flows through it.
\n<\/section>\n
\nWhen an electric current passes through a low-pressure gas in a tube, the gas atoms are excited and emit light as they return to their ground state. Different gases emit light of characteristic wavelengths (colors). Neon gas specifically emits a bright reddish-orange light when used in discharge tubes, famously known as “neon signs.”
\n<\/section>\n
\nHelium typically emits a white, yellowish, or pinkish-orange light. Argon typically emits blue or violet light. Nitrogen can emit pink, orange, or yellow light depending on conditions. Other colors in commercial “neon signs” are often achieved by using different noble gases (like argon for blue) or by coating the inside of the tube with phosphors that fluoresce different colors when excited by the ultraviolet light emitted by gases like mercury vapor or argon.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following gases produces a red light when electricity flows through it ? [amp_mcq option1=”Helium” option2=”Argon” option3=”Nitrogen” option4=”Neon” correct=”option4″] This question was previously asked in UPSC CAPF – 2020 Download PDFAttempt Online Neon gas produces a red light when electricity flows through it. When an electric current passes through a low-pressure gas … <\/p>\n

Detailed SolutionWhich one of the following gases produces a red light when electricity<\/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":[1085],"tags":[1288,1096,1245],"class_list":["post-90456","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1288","tag-chemistry","tag-sulphur-nitrogen-halogen-inert-gases","no-featured-image-padding"],"yoast_head":"\nWhich one of the following gases produces a red light when electricity<\/title>\n<meta name=\"description\" content=\"Neon gas produces a red light when electricity flows through it. When an electric current passes through a low-pressure gas in a tube, the gas atoms are excited and emit light as they return to their ground state. Different gases emit light of characteristic wavelengths (colors). Neon gas specifically emits a bright reddish-orange light when used in discharge tubes, famously known as "neon signs."\" \/>\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-gases-produces-a-red-light-when-electricity\/\" \/>\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 gases produces a red light when electricity\" \/>\n<meta property=\"og:description\" content=\"Neon gas produces a red light when electricity flows through it. When an electric current passes through a low-pressure gas in a tube, the gas atoms are excited and emit light as they return to their ground state. Different gases emit light of characteristic wavelengths (colors). 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