{"id":91073,"date":"2025-06-01T10:45:28","date_gmt":"2025-06-01T10:45:28","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=91073"},"modified":"2025-06-01T10:45:28","modified_gmt":"2025-06-01T10:45:28","slug":"due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t\/","title":{"rendered":"Due to improper\/indiscriminate disposal of old and used computers or t"},"content":{"rendered":"

Due to improper\/indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste?
\n
1. Beryllium
\n
2. Cadmium
\n
3. Chromium
\n
4. Heptachlor
\n
5. Mercury
\n
6. Lead
\n
7. Plutonium
\n
Select the correct answer using the codes given below.<\/p>\n

[amp_mcq option1=”1, 3, 4, 6 and 7 only” option2=”1, 2, 3, 5 and 6 only” option3=”2, 4, 5 and 7 only” option4=”1, 2, 3, 4, 5, 6 and 7″ correct=”option2″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC IAS – 2013<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe correct answer is B) 1, 2, 3, 5 and 6 only.
\n<\/section>\n
\nElectronic waste (e-waste), such as old computers and their parts, contains various hazardous substances. The list provided includes several heavy metals commonly found in electronic components: Beryllium (1), Cadmium (2), Chromium (3, often hexavalent chromium), Mercury (5), and Lead (6). These substances pose significant environmental and health risks if not disposed of properly. Heptachlor (4) is an organochlorine pesticide, not a standard component of electronics. Plutonium (7) is a radioactive element associated with nuclear materials, not found in typical consumer electronics. Therefore, 1, 2, 3, 5, and 6 are commonly released into the environment from improper e-waste handling.
\n<\/section>\n
\nOther hazardous substances found in e-waste include brominated flame retardants (BFRs), polychlorinated biphenyls (PCBs – in older equipment), and various other chemicals in plastics and circuit boards. Proper e-waste management involves recycling and safe disposal methods to prevent these toxins from contaminating soil, water, and air.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Due to improper\/indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste? 1. Beryllium 2. Cadmium 3. Chromium 4. Heptachlor 5. Mercury 6. Lead 7. Plutonium Select the correct answer using the codes given below. [amp_mcq option1=”1, 3, 4, 6 and 7 only” option2=”1, … <\/p>\n

Detailed SolutionDue to improper\/indiscriminate disposal of old and used computers or t<\/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":[1092],"tags":[1467,1136,1137],"class_list":["post-91073","post","type-post","status-publish","format-standard","hentry","category-upsc-ias","tag-1467","tag-environment-and-ecology","tag-pollution","no-featured-image-padding"],"yoast_head":"\nDue to improper\/indiscriminate disposal of old and used computers or t<\/title>\n<meta name=\"description\" content=\"The correct answer is B) 1, 2, 3, 5 and 6 only. Electronic waste (e-waste), such as old computers and their parts, contains various hazardous substances. The list provided includes several heavy metals commonly found in electronic components: Beryllium (1), Cadmium (2), Chromium (3, often hexavalent chromium), Mercury (5), and Lead (6). These substances pose significant environmental and health risks if not disposed of properly. Heptachlor (4) is an organochlorine pesticide, not a standard component of electronics. Plutonium (7) is a radioactive element associated with nuclear materials, not found in typical consumer electronics. Therefore, 1, 2, 3, 5, and 6 are commonly released into the environment from improper e-waste handling.\" \/>\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\/due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Due to improper\/indiscriminate disposal of old and used computers or t\" \/>\n<meta property=\"og:description\" content=\"The correct answer is B) 1, 2, 3, 5 and 6 only. Electronic waste (e-waste), such as old computers and their parts, contains various hazardous substances. The list provided includes several heavy metals commonly found in electronic components: Beryllium (1), Cadmium (2), Chromium (3, often hexavalent chromium), Mercury (5), and Lead (6). These substances pose significant environmental and health risks if not disposed of properly. Heptachlor (4) is an organochlorine pesticide, not a standard component of electronics. Plutonium (7) is a radioactive element associated with nuclear materials, not found in typical consumer electronics. Therefore, 1, 2, 3, 5, and 6 are commonly released into the environment from improper e-waste handling.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:45:28+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":"Due to improper\/indiscriminate disposal of old and used computers or t","description":"The correct answer is B) 1, 2, 3, 5 and 6 only. Electronic waste (e-waste), such as old computers and their parts, contains various hazardous substances. The list provided includes several heavy metals commonly found in electronic components: Beryllium (1), Cadmium (2), Chromium (3, often hexavalent chromium), Mercury (5), and Lead (6). These substances pose significant environmental and health risks if not disposed of properly. Heptachlor (4) is an organochlorine pesticide, not a standard component of electronics. Plutonium (7) is a radioactive element associated with nuclear materials, not found in typical consumer electronics. Therefore, 1, 2, 3, 5, and 6 are commonly released into the environment from improper e-waste handling.","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\/due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t\/","og_locale":"en_US","og_type":"article","og_title":"Due to improper\/indiscriminate disposal of old and used computers or t","og_description":"The correct answer is B) 1, 2, 3, 5 and 6 only. Electronic waste (e-waste), such as old computers and their parts, contains various hazardous substances. The list provided includes several heavy metals commonly found in electronic components: Beryllium (1), Cadmium (2), Chromium (3, often hexavalent chromium), Mercury (5), and Lead (6). These substances pose significant environmental and health risks if not disposed of properly. Heptachlor (4) is an organochlorine pesticide, not a standard component of electronics. Plutonium (7) is a radioactive element associated with nuclear materials, not found in typical consumer electronics. Therefore, 1, 2, 3, 5, and 6 are commonly released into the environment from improper e-waste handling.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:45:28+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\/due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t\/","url":"https:\/\/exam.pscnotes.com\/mcq\/due-to-improper-indiscriminate-disposal-of-old-and-used-computers-or-t\/","name":"Due to improper\/indiscriminate disposal of old and used computers or t","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:45:28+00:00","dateModified":"2025-06-01T10:45:28+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The correct answer is B) 1, 2, 3, 5 and 6 only. 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