{"id":26,"date":"2020-09-16T04:31:10","date_gmt":"2020-09-16T04:31:10","guid":{"rendered":"http:\/\/www.web.ichemc.edu.lk\/cosl\/?page_id=26"},"modified":"2025-10-21T03:08:23","modified_gmt":"2025-10-21T03:08:23","slug":"icho-exam-questions","status":"publish","type":"page","link":"https:\/\/www.web.ichemc.edu.lk\/cosl\/icho-exam-questions\/","title":{"rendered":"IChO exam questions"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<ul class=\"wp-block-list\">\n<li>IChO Exam Preparatory Problems <a href=\"https:\/\/www.icho2023.ch\/preparatory-problems\" target=\"_blank\" rel=\"noopener noreferrer\">2023<\/a><\/li>\n\n\n\n<li>IChO Exam Preparatory Problems <a href=\"https:\/\/www.icho2022.cn\/23261\/list.htm\" target=\"_blank\" rel=\"noopener noreferrer\">2022<\/a><\/li>\n\n\n\n<li>IChO Exam Preparatory Problems <a href=\"https:\/\/www.icho2021.org\/problems\/\" target=\"_blank\" rel=\"noopener noreferrer\">2021<\/a><\/li>\n\n\n\n<li>IChO Exam Problems <a href=\"https:\/\/icho2020.tubitak.gov.tr\/icho-2020-sorulari\" target=\"_blank\" rel=\"noopener noreferrer\">2020<\/a><\/li>\n\n\n\n<li>IChO Exam Problems <a href=\"https:\/\/icho2019.paris\/en\/problemes\/problemes-icho-2019\/\" target=\"_blank\" rel=\"noopener noreferrer\">2019<\/a><\/li>\n\n\n\n<li>IChO Exam Problems <a href=\"https:\/\/50icho.eu\/problems\/icho-2018-problems\/\" target=\"_blank\" rel=\"noopener noreferrer\">2018<\/a><\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image alignwide size-full\"><img decoding=\"async\" src=\"http:\/\/www.web.ichemc.edu.lk\/cosl\/wp-content\/uploads\/sites\/4\/2025\/10\/cropped-COSL-logo800px.png\" alt=\"\" class=\"wp-image-2039\"\/><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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