{"id":33557,"date":"2024-03-11T09:29:26","date_gmt":"2024-03-11T09:29:26","guid":{"rendered":"https:\/\/edukemy.com\/blog\/?p=33557"},"modified":"2024-03-11T09:29:28","modified_gmt":"2024-03-11T09:29:28","slug":"upsc-prelims-2018-question-81","status":"publish","type":"post","link":"https:\/\/edukemy.com\/blog\/upsc-prelims-2018-question-81\/","title":{"rendered":"UPSC Prelims 2018 &#8211; Question 81"},"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<p>Here is Question No. 81 a part of our series on UPSC Prelims 2018<\/p>\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-69ee4b75d2174\" 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-69ee4b75d2174\"  \/><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-2018-question-81\/#Q81_Which_of_the_following_isare_the_possible_consequences_of_heavy_sand_mining_in_riverbeds\" title=\"Q81. Which of the following is\/are the possible consequence\/s of heavy sand mining in riverbeds?\">Q81. Which of the following is\/are the possible consequence\/s of heavy sand mining in riverbeds?<\/a><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Q81_Which_of_the_following_isare_the_possible_consequences_of_heavy_sand_mining_in_riverbeds\"><\/span>Q81. Which of the following is\/are the possible consequence\/s of heavy sand mining in riverbeds?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>Decreased salinity in the river<\/li><li>Pollution of groundwater<\/li><li>Lowering of the water &#8211; table<\/li><\/ol>\n\n\n\n<p>Select the correct answer using the code given below:<br>(a) 1 only<br>(b) 2 and 3 only<br>(c) 1 and 3 only<br>(d) 1, 2 and 3<\/p>\n\n\n\n<p>Answer: B<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Statement 1 is not correct: <\/strong>Depletion of sand in the streambed causes the deepening of rivers and estuaries, and the enlargement of river mouths and coastal inlets. It leads to decreased salinity in the river.<\/li><li><strong>Statement 2 is correct:<\/strong> The sediment in the mining site, if it contains toxic material due to long-term accumulation, will cause groundwater pollution.<\/li><li><strong>Statement 3 is correct: <\/strong>Riverbed becomes dry due to exposure to solar radiation, decreasing the surface and groundwater. It causes lowering of the water tables.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Q81. Which of the following is\/are the possible consequence\/s of heavy sand mining in riverbeds?<\/p>\n<p>Decreased salinity in the river<\/p>\n<p>Pollution of groundwater<\/p>\n","protected":false},"author":17,"featured_media":33559,"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":[4],"tags":[],"class_list":["post-33557","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/33557","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=33557"}],"version-history":[{"count":1,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/33557\/revisions"}],"predecessor-version":[{"id":33560,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/33557\/revisions\/33560"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/media\/33559"}],"wp:attachment":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/media?parent=33557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/categories?post=33557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/tags?post=33557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}