{"id":888,"date":"2025-05-26T10:41:11","date_gmt":"2025-05-26T10:41:11","guid":{"rendered":"https:\/\/thepumumedia.com\/blogs\/?p=888"},"modified":"2025-05-26T10:52:40","modified_gmt":"2025-05-26T10:52:40","slug":"science-technology-for-upsc-prelims-2025","status":"publish","type":"post","link":"https:\/\/thepumumedia.com\/blogs\/science-technology-for-upsc-prelims-2025\/","title":{"rendered":"Science Technology for UPSC Prelims 2025: Topics, Trends &amp; Tips"},"content":{"rendered":"\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#1-why-s-t-matters-in-upsc-prelims-2025\">1. Why S&amp;T Matters in UPSC Prelims 2025<\/a><\/li><li><a href=\"#2-static-s-t-topics-you-cant-miss\">2. Static S&amp;T Topics You Can\u2019t Miss<\/a><ul><li><a href=\"#basics-of-matter-particles\">Basics of Matter &amp; Particles<\/a><\/li><li><a href=\"#laser-photonics\">Laser &amp; Photonics<\/a><\/li><li><a href=\"#chemistry-of-concern\">Chemistry of Concern<\/a><\/li><li><a href=\"#biotechnology-genetics\">Biotechnology &amp; Genetics<\/a><\/li><li><a href=\"#ict-emerging-digital-tech\">ICT &amp; Emerging Digital Tech<\/a><\/li><li><a href=\"#energy-environment\">Energy &amp; Environment<\/a><\/li><li><a href=\"#defense-space\">Defense &amp; Space<\/a><\/li><\/ul><\/li><li><a href=\"#3-current-affairs-emerging-developments\">3. Current Affairs &amp; Emerging Developments<\/a><\/li><li><a href=\"#4-top-sources-study-materials\">4. Top Sources &amp; Study Materials<\/a><\/li><li><a href=\"#5-trend-analysis-what-past-papers-reveal\">5. Trend Analysis: What Past Papers Reveal<\/a><\/li><li><a href=\"#6-7-smart-tips-to-crack-s-t-questions\">6. 7 Smart Tips to Crack S&amp;T Questions<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-why-s-t-matters-in-upsc-prelims-2025\"><strong>1. Why S&amp;T Matters in UPSC Prelims 2025<\/strong><\/h2>\n\n\n\n<p>Science &amp; Technology (S&amp;T) consistently contributes <strong>10\u201314 questions<\/strong> in the Prelims paper. More than 70% of these now draw on <strong>current innovations<\/strong>, making it a high-impact section\u2014mastery here can make or break your cutoff.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-static-s-t-topics-you-cant-miss\"><strong>2. Static S&amp;T Topics You Can\u2019t Miss<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"basics-of-matter-particles\"><strong>Basics of Matter &amp; Particles<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Fermions, Bosons, Neutrinos<\/strong>: Properties &amp; real-world examples<br><\/li>\n\n\n\n<li><strong>Radioactivity<\/strong>: Types, half-life, applications<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"laser-photonics\"><strong>Laser &amp; Photonics<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LIDAR<\/strong> vs. <strong>Anti-Laser<\/strong> concepts<br><\/li>\n\n\n\n<li><strong>Superconductivity<\/strong>: Critical temperature, uses in MRI &amp; maglev<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"chemistry-of-concern\"><strong>Chemistry of Concern<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PFAS, BPA, Aspartame<\/strong>: Uses, health impacts<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"biotechnology-genetics\"><strong>Biotechnology &amp; Genetics<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DNA, RNA<\/strong> processes; <strong>CRISPR-Cas9<\/strong> editing<br><\/li>\n\n\n\n<li><strong>Stem Cell Therapy<\/strong>, <strong>Human Genome Project<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>GM Crops<\/strong>: Bt Cotton, Golden Rice<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"ict-emerging-digital-tech\"><strong>ICT &amp; Emerging Digital Tech<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Network Types<\/strong>: PAN \/ LAN \/ WAN<br><\/li>\n\n\n\n<li><strong>Wireless Spectrum<\/strong>: Radio \u2192 Gamma rays<br><\/li>\n\n\n\n<li><strong>LiFi vs WiFi<\/strong>, <strong>5G \u2192 6G<\/strong>, <strong>Web 3.0<\/strong>, <strong>Metaverse<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>Blockchain<\/strong>, <strong>AI<\/strong>, <strong>Quantum Computing<\/strong>, <strong>IoT<\/strong><strong><br><\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"energy-environment\"><strong>Energy &amp; Environment<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nuclear Reactors<\/strong>: PHWR, SMR<br><\/li>\n\n\n\n<li><strong>Solar PV vs CSP<\/strong>, <strong>Biofuels<\/strong> generations<br><\/li>\n\n\n\n<li><strong>Green Hydrogen<\/strong>, <strong>Battery Tech<\/strong> (Li-ion, Zinc-air)<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"defense-space\"><strong>Defense &amp; Space<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Missile Systems<\/strong>: Ballistic vs Cruise; BMD tech<br><\/li>\n\n\n\n<li><strong>Key Indian Missiles<\/strong> (Agni series, Prithvi)<br><\/li>\n\n\n\n<li><strong>ISRO Missions<\/strong> (PSLV, GSLV), NASA Artemis<br><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-current-affairs-emerging-developments\"><strong>3. Current Affairs &amp; Emerging Developments<\/strong><\/h2>\n\n\n\n<p>Focus on application-based topics that have featured in the last 12\u201318 months:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>MicroRNA therapeutics<\/strong>, <strong>Reverse transcriptase inhibitors<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>Quantum Non-Locality<\/strong>, <strong>Brain-Computer Interfaces<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>National Blockchain Stack (Vishvasya)<\/strong>, <strong>Operation Dronagiri (DRDO)<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>Mini-Moon discoveries<\/strong>, <strong>Quasar observations<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>EOS-08 Earth Observation Satellite<\/strong>, <strong>Tokamak fusion prototypes<\/strong><strong><br><\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-top-sources-study-materials\"><strong>4. Top Sources &amp; Study Materials<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Type<\/strong><\/td><td><strong>Resource<\/strong><\/td><\/tr><tr><td><strong>Core Text<\/strong><\/td><td>NCERT 11\u201312 (Physics, Chemistry, Biology)<\/td><\/tr><tr><td><strong>Reference Book<\/strong><\/td><td>Lucent\u2019s <em>General Science<\/em>, <em>Science Reporter<\/em> magazine<\/td><\/tr><tr><td><strong>Current Affairs<\/strong><\/td><td>Monthly FocUS Magazines (S&amp;T section), PIB releases<\/td><\/tr><tr><td><strong>Online<\/strong><\/td><td>ISRO \/ DRDO \/ DST websites; The Hindu <em>Science &amp; Tech<\/em> section<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"5-trend-analysis-what-past-papers-reveal\"><strong>5. Trend Analysis: What Past Papers Reveal<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>2018\u20132024<\/strong>: 10\u201314 S&amp;T questions\/year<br><\/li>\n\n\n\n<li><strong>Conceptual vs Factual<\/strong>: Shift from recall to application<br><\/li>\n\n\n\n<li><strong>Overlap<\/strong>: ~70% framed on current events<br><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"6-7-smart-tips-to-crack-s-t-questions\"><strong>6. 7 Smart Tips to Crack S&amp;T Questions<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Integrate Static + Current<\/strong><strong><br><\/strong>\n<ul class=\"wp-block-list\">\n<li>Always link core concepts (e.g., CRISPR) with latest news (new applications).<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Make Topic-Wise Notes<\/strong><strong><br><\/strong>\n<ul class=\"wp-block-list\">\n<li>Use flashcards for quick revision of definitions and processes.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Practice PYQs Religiously<\/strong><strong><br><\/strong>\n<ul class=\"wp-block-list\">\n<li>Time yourself on S&amp;T sets from 2015\u20132024 to gauge difficulty.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Follow Official Updates<\/strong><strong><br><\/strong>\n<ul class=\"wp-block-list\">\n<li>Subscribe to ISRO, DRDO and DST newsletters.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Group Study on Tough Topics<\/strong><strong><br><\/strong>\n<ul class=\"wp-block-list\">\n<li>Discuss quantum tech or gene editing with peers for deeper clarity.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Use Mind Maps<\/strong><strong><br><\/strong>\n<ul class=\"wp-block-list\">\n<li>Visualize interconnections\u2014e.g., Blockchain \u2192 Cryptocurrency \u2192 Smart Contracts.<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Revise Monthly<\/strong><strong><br><\/strong>\n<ul class=\"wp-block-list\">\n<li>Allocate one weekend per month solely for S&amp;T mock tests.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Why S&amp;T Matters in UPSC Prelims 2025 Science &amp; Technology (S&amp;T) consistently contributes 10\u201314 questions in the Prelims paper. More than 70% of these now draw on current innovations, making it a high-impact section\u2014mastery here can make or break your cutoff. 2. Static S&amp;T Topics You Can\u2019t Miss Basics of Matter &amp; Particles Laser &amp; Photonics Chemistry of Concern Biotechnology &amp; Genetics ICT &amp; Emerging Digital Tech Energy &amp; Environment Defense &amp; Space 3. Current Affairs &amp; Emerging Developments Focus on application-based topics that have featured in the last 12\u201318 months: 4. Top Sources &amp; Study Materials Type Resource Core Text NCERT 11\u201312 (Physics, Chemistry, Biology) Reference Book Lucent\u2019s General Science, Science Reporter magazine Current Affairs Monthly FocUS Magazines (S&amp;T section), PIB releases Online ISRO \/ DRDO \/ DST websites; The Hindu Science &amp; Tech section 5. Trend Analysis: What Past Papers Reveal 6. 7 Smart Tips to Crack S&amp;T Questions<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[16,19],"tags":[],"class_list":["post-888","post","type-post","status-publish","format-standard","hentry","category-education","category-upsc","entry"],"_links":{"self":[{"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/posts\/888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/comments?post=888"}],"version-history":[{"count":3,"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/posts\/888\/revisions"}],"predecessor-version":[{"id":917,"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/posts\/888\/revisions\/917"}],"wp:attachment":[{"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/media?parent=888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/categories?post=888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thepumumedia.com\/blogs\/wp-json\/wp\/v2\/tags?post=888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}