{"id":28675,"date":"2024-02-21T05:39:43","date_gmt":"2024-02-21T05:39:43","guid":{"rendered":"https:\/\/edukemy.com\/blog\/?p=28675"},"modified":"2024-02-21T05:39:45","modified_gmt":"2024-02-21T05:39:45","slug":"upsc-prelims-2022-question-44","status":"publish","type":"post","link":"https:\/\/edukemy.com\/blog\/upsc-prelims-2022-question-44\/","title":{"rendered":"UPSC Prelims 2022 &#8211; Question 44"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/edukemy.com\/upsc\/upsc-prelims-test-series?utm_source=Blog&amp;utm_medium=Blog&amp;utm_campaign=Blog-%20PTS\" target=\"_blank\" rel=\"noreferrer noopener\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/02\/Prelims-Test-Series-eng-and-hindi-1280\u00d7330.svg\" alt=\"UPSC Prelims Mock Test - ECONOMY 2\" class=\"wp-image-24924\" width=\"779\" height=\"199\"\/><\/a><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-69f06324dcb67\" class=\"ez-toc-cssicon-toggle-label\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69f06324dcb67\"  \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/edukemy.com\/blog\/upsc-prelims-2022-question-44\/#Q44_In_the_context_of_WHO_Air_Quality_Guidelines_consider_the_following_statements\" title=\"Q44. In the context of WHO Air Quality Guidelines, consider the following statements:\">Q44. In the context of WHO Air Quality Guidelines, consider the following statements:<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Q44_In_the_context_of_WHO_Air_Quality_Guidelines_consider_the_following_statements\"><\/span>Q44. In the context of WHO Air Quality Guidelines, consider the following statements:<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>The 24-hour mean of PM2.5 should not exceed 15 ug\/m\u00b3 and the annual mean of PM2.5 should not exceed 5 \u00b5g\/m\u00b3.<\/li><li>In a year, the highest levels of ozone pollution occur during periods of inclement weather.<\/li><li>PM10 can penetrate the lung barrier and enter the bloodstream.<\/li><li>Excessive ozone in the air can trigger asthma.<\/li><\/ol>\n\n\n\n<p>Which of the statements given above are correct?<br>a) 1, 3 and 4<br>b) 1 and 4 only<br>c) 2, 3 and 4<br>d) 1 and 2 only<\/p>\n\n\n\n<p>Answer &#8211; B<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Statement 1 is correct: <\/strong>WHO\u2019s new guidelines recommend air quality levels for six pollutants \u2014 particulate matter (PM), ozone (O\u2083), nitrogen dioxide (NO\u2082) sulfur dioxide (SO\u2082), and carbon monoxide (CO) \u2014 that are not just health hazards but they also give rise to other damaging pollutants. The recommendation for PM 2.5 is that the annual average should not exceed 5 micrograms per cubic meter or 15 micrograms per cubic meter in a day.<\/li><li><strong>Statement 2 is not correct:<\/strong> Ozone is one of the main components of photochemical smog at ground level. It is created when pollutants like nitrogen oxides (NOx) from industry and car emissions and volatile organic compounds  (VOCs) from vehicles, solvents, and industry react with sunlight (photochemical reaction). Ozone levels are typically highest during the afternoon hours of the summer months when the. influence of direct sunlight is the greatest. Inclement weather is unpleasant, especially with cold wind and rain. So, Ozone pollution will be low during inclement weather.<\/li><li><strong>Statement 3 is not correct: <\/strong>While particles with a diameter of 10 millimeters or less, or PM10, can enter and lodge deep inside the lungs, particles with a diameter of 2.5 microns or less, or PM2.5, are much more harmful to human health. The lung barrier is permeable, and PM2.5 can get into the bloodstream.<\/li><li><strong>Statement 4 is correct: <\/strong>The health of people can be significantly impacted by excessive ozone in the air. Breathing issues, asthma attacks, lowered lung function and lung illnesses can all be brought on by it.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/edukemy.com\/free-resources-for-upsc?utm_source=Blog&amp;utm_medium=Banner&amp;utm_campaign=Resources\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"1280\" height=\"300\" data-src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18.png\" alt=\"\" class=\"wp-image-42398 lazyload\" data-srcset=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18.png 1280w, https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18-1170x274.png 1170w, https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/18-585x137.png 585w\" data-sizes=\"(max-width: 1280px) 100vw, 1280px\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 1280px; --smush-placeholder-aspect-ratio: 1280\/300;\" \/><\/a><\/figure>\n\n\n\n<p>For UPSC Prelims Resources,&nbsp;<a href=\"https:\/\/edukemy.com\/upsc-cse-prelims-resource-centre\" target=\"_blank\" rel=\"noreferrer noopener\">Click here<\/a><\/p>\n\n\n\n<p>For Daily Updates and Study Material:<\/p>\n\n\n\n<p>Join our Telegram Channel \u2013&nbsp;<a href=\"https:\/\/t.me\/WithEdukemy4IAS\" target=\"_blank\" rel=\"noreferrer noopener\">Edukemy for IAS<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>1. 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In the context of WHO Air Quality Guidelines, consider the following statements:<\/p>\n<p>The 24-hour mean of PM2.5 should not exceed 15 ug\/m\u00b3 <\/p>\n","protected":false},"author":17,"featured_media":28678,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[1644],"tags":[232,515,231],"class_list":["post-28675","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-upsc-prelims","tag-upsc","tag-upsc-cse","tag-upsc-prelims"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/28675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/comments?post=28675"}],"version-history":[{"count":2,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/28675\/revisions"}],"predecessor-version":[{"id":28679,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/28675\/revisions\/28679"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/media\/28678"}],"wp:attachment":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/media?parent=28675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/categories?post=28675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/tags?post=28675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}