{"id":92386,"date":"2025-06-01T11:22:39","date_gmt":"2025-06-01T11:22:39","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=92386"},"modified":"2025-06-01T11:22:39","modified_gmt":"2025-06-01T11:22:39","slug":"electron-was-discovered-by","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/electron-was-discovered-by\/","title":{"rendered":"Electron was discovered by"},"content":{"rendered":"<p>Electron was discovered by<\/p>\n<p>[amp_mcq option1=&#8221;Michael Faraday&#8221; option2=&#8221;Joseph John Thomson&#8221; option3=&#8221;Henry Cavendish&#8221; option4=&#8221;Earnest Rutherford&#8221; correct=&#8221;option2&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC CISF-AC-EXE &#8211; 2017<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-cisf-ac-exe-2017.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-cisf-ac-exe-2017\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe electron was discovered by Joseph John Thomson.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nJ.J. Thomson discovered the electron in 1897 through his experiments with cathode ray tubes, determining that cathode rays were composed of negatively charged particles much smaller than atoms.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nMichael Faraday contributed significantly to electromagnetism and electrochemistry. Henry Cavendish discovered hydrogen and determined the composition of water. Ernest Rutherford conducted the gold foil experiment leading to the discovery of the atomic nucleus and later discovered the proton.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Electron was discovered by [amp_mcq option1=&#8221;Michael Faraday&#8221; option2=&#8221;Joseph John Thomson&#8221; option3=&#8221;Henry Cavendish&#8221; option4=&#8221;Earnest Rutherford&#8221; correct=&#8221;option2&#8243;] This question was previously asked in UPSC CISF-AC-EXE &#8211; 2017 Download PDFAttempt Online The electron was discovered by Joseph John Thomson. J.J. Thomson discovered the electron in 1897 through his experiments with cathode ray tubes, determining that cathode rays were &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"Electron was discovered by\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/electron-was-discovered-by\/#more-92386\">Detailed Solution<span class=\"screen-reader-text\">Electron was discovered by<\/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":[1089],"tags":[1101,1128,1233],"class_list":["post-92386","post","type-post","status-publish","format-standard","hentry","category-upsc-cisf-ac-exe","tag-1101","tag-physics","tag-scientists-inventions","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Electron was discovered by<\/title>\n<meta name=\"description\" content=\"The electron was discovered by Joseph John Thomson. 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