{"id":239766,"date":"2026-03-16T22:14:30","date_gmt":"2026-03-16T16:44:30","guid":{"rendered":"https:\/\/www.oliveboard.in\/blog\/?p=239766"},"modified":"2026-03-30T19:26:20","modified_gmt":"2026-03-30T13:56:20","slug":"science-quiz","status":"publish","type":"post","link":"https:\/\/www.oliveboard.in\/blog\/science-quiz\/","title":{"rendered":"Science Quiz for SSC &amp; Railway Exams, Download Free E-book"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_77 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of content<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><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><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Download_Science_Quiz_PDF\" >Download Science Quiz PDF<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Practice_Science_Quiz_for_SSC_Railways_and_Other_Competitive_Exams_Live_Quiz\" >Practice Science Quiz for SSC, Railways, and Other Competitive Exams (Live Quiz)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Sign_Up\" >Sign Up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Login\" >Login<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Forgot_Password\" >Forgot Password<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#i\" >&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Sign_Up-2\" >Sign Up<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Login-2\" >Login<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#Forgot_Password-2\" >Forgot Password<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#i-2\" >&nbsp;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.oliveboard.in\/blog\/science-quiz\/#What_are_the_top_Government_exams_in_which_science_is_asked\" >What are the top Government exams in which science is asked?<\/a><\/li><\/ul><\/nav><\/div>\n\n<p>Science is asked in exams like SSC, Railways, and various UP Police Exams. It is an important subject in most competitive exams, and many questions are based on the basic concepts of Physics, Chemistry, and Biology. In this blog, you will get 100 important Science questions with answers for practice. This blog also includes 30 practice questions in quiz format to test your preparation. You can also download the free PDF eBook and prepare anytime, anywhere.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-download-science-quiz-pdf\"><span class=\"ez-toc-section\" id=\"Download_Science_Quiz_PDF\"><\/span><strong>Download Science Quiz PDF<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>You can download the Science Quiz eBook PDF from the link given below. The PDF contains 100 important Science questions with answers for easy practice and revision. These questions are very useful for <a href=\"https:\/\/www.oliveboard.in\/ssc-exams\/?ref=contmk-blog-sq\" target=\"_blank\" rel=\"noreferrer noopener\">SSC<\/a>, <a href=\"https:\/\/www.oliveboard.in\/railway-exams\/?ref=contmk-blog-sq\" target=\"_blank\" rel=\"noreferrer noopener\">Railways<\/a> and other competitive exams. Download the free eBook and start your preparation anytime, anywhere.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/science-quiz-pdf\/?ref=contmk-blog-sq\" target=\"_blank\" rel=\"noreferrer noopener\">Download Science Quiz PDF<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-practice-science-quiz-for-ssc-railways-and-other-competitive-exams-live-quiz\"><span class=\"ez-toc-section\" id=\"Practice_Science_Quiz_for_SSC_Railways_and_Other_Competitive_Exams_Live_Quiz\"><\/span><strong>Practice Science Quiz for SSC, Railways, and Other Competitive Exams (Live Quiz)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Below are some science questions for your practice<a href=\"https:\/\/www.oliveboard.in\/ssc-chsl-notification\/?ref=contmk-blogs\" target=\"_blank\" rel=\"noreferrer noopener\">.<\/a>&nbsp;Attempt them live and check your score as per the real exam marking scheme. You will get +1 for every correct answer, \u22120.25 for every wrong answer, and 0 for unattempted questions.<\/p>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<meta charset=\"UTF-8\">\n<link rel=\"stylesheet\" href=\"https:\/\/courses.oliveboard.in\/edge\/css\/login-modal-for-blog.css\">\n\n<style>\n#quiz-1-sticky-header {\n  position: sticky;\n  top: 0;\n  z-index: 100;\n  background: #1565c0;\n  color: #fff;\n  padding: 12px 20px;\n  border-radius: 10px 10px 0 0;\n  display: flex;\n  justify-content: space-between;\n  align-items: center;\n  font-size: 16px;\n  font-weight: bold;\n  box-shadow: 0 2px 8px rgba(0,0,0,0.2);\n  margin: -20px -20px 20px -20px;\n}\n\n#quiz-1-score-badge {\n  background: rgba(255,255,255,0.2);\n  padding: 4px 12px;\n  border-radius: 20px;\n  font-size: 15px;\n  white-space: nowrap;\n}\n#quiz-1 * { box-sizing: border-box; }\n\n#quiz-1 .quiz-container {\n  max-width: 700px;\n  margin: auto;\n  padding: 20px;\n  background: #fff;\n  border-radius: 14px;\n  box-shadow: 0 6px 16px rgba(0,0,0,0.12);\n}\n\n#quiz-1 h2 {\n  text-align: center;\n}\n\n#quiz-1 .question {\n  margin-bottom: 22px;\n}\n\n#quiz-1 .question p {\n  font-weight: bold;\n}\n\n#quiz-1 button {\n  width: 100%;\n  padding: 12px;\n  margin: 6px 0;\n  border: none;\n  border-radius: 6px;\n  background: #e0e0e0;\n  color: #000;\n  font-size: 16px;\n  cursor: pointer;\n}\n\n#quiz-1 button:hover {\n  background: #d5d5d5;\n}\n\n#quiz-1 button.correct {\n  background: #4caf50;\n  color: #000;\n}\n\n#quiz-1 button.wrong {\n  background: #f44336;\n  color: #000;\n}\n\n#quiz-1 button.locked {\n  pointer-events: none;\n}\n\n\/* SUMMARY *\/\n#quiz-1 .final-summary {\n  margin-top: 40px;\n  padding: 20px;\n  border-radius: 14px;\n  background: #fafafa;\n  border: 2px solid #4caf50;\n}\n\n#quiz-1 .final-summary h3 {\n  text-align: center;\n  margin-bottom: 20px;\n}\n\n#quiz-1 .summary-row {\n  display: grid;\n  grid-template-columns: 120px 1fr 40px;\n  gap: 10px;\n  align-items: center;\n  margin-bottom: 12px;\n  font-weight: bold;\n}\n\n#quiz-1 .summary-bar {\n  height: 14px;\n  background: #ddd;\n  border-radius: 10px;\n  overflow: hidden;\n}\n\n#quiz-1 .bar-fill {\n  height: 100%;\n  width: 0%;\n}\n\n#quiz-1 .bar-attempted { background: #2196f3; }\n#quiz-1 .bar-correct { background: #4caf50; }\n#quiz-1 .bar-wrong { background: #f44336; }\n#quiz-1 .bar-unattempted { background: #9e9e9e; width: 100%; }\n\n#quiz-1 .final-score {\n  text-align: center;\n  font-size: 22px;\n  margin-top: 20px;\n}\n\n#quiz-1 .score-value {\n  font-size: 30px;\n  margin-left: 8px;\n}\n<\/style>\n<\/head>\n\n<body>\n<div id=\"quiz-1\">\n  <div class=\"quiz-container\">\n<div id=\"quiz-1-sticky-header\">\n  <span>Science Quiz Questions<\/span>\n  <span id=\"quiz-1-score-badge\">Score: <strong id=\"quiz-1-score-value\">0.00<\/strong><\/span>\n<\/div>\n\n    <!-- QUESTIONS -->\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q1. The SI unit of electric charge is:<\/p>\n  <button data-correct=\"false\">Ampere<\/button>\n  <button data-correct=\"false\">Volt<\/button>\n  <button data-correct=\"true\">Coulomb<\/button>\n  <button data-correct=\"false\">Watt<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q2. Which mirror is used as a rear-view mirror in vehicles?<\/p>\n  <button data-correct=\"false\">Concave<\/button>\n  <button data-correct=\"true\">Convex<\/button>\n  <button data-correct=\"false\">Plane<\/button>\n  <button data-correct=\"false\">Parabolic<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q3. The speed of light in vacuum is approximately:<\/p>\n  <button data-correct=\"false\">3\u00d710\u2076 m\/s<\/button>\n  <button data-correct=\"true\">3\u00d710\u2078 m\/s<\/button>\n  <button data-correct=\"false\">3\u00d710\u00b9\u2070 m\/s<\/button>\n  <button data-correct=\"false\">3\u00d710\u2074 m\/s<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q4. Newton&#8217;s Third Law states:<\/p>\n  <button data-correct=\"false\">F = ma<\/button>\n  <button data-correct=\"true\">Every action has equal and opposite reaction<\/button>\n  <button data-correct=\"false\">Objects at rest stay at rest<\/button>\n  <button data-correct=\"false\">Energy is conserved<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q5. The unit of power is:<\/p>\n  <button data-correct=\"false\">Joule<\/button>\n  <button data-correct=\"false\">Newton<\/button>\n  <button data-correct=\"false\">Pascal<\/button>\n  <button data-correct=\"true\">Watt<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q6. Which wave does NOT require a medium to travel?<\/p>\n  <button data-correct=\"false\">Sound wave<\/button>\n  <button data-correct=\"false\">Seismic wave<\/button>\n  <button data-correct=\"true\">Electromagnetic wave<\/button>\n  <button data-correct=\"false\">Water wave<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q7. A transformer works on the principle of:<\/p>\n  <button data-correct=\"false\">Self-induction<\/button>\n  <button data-correct=\"true\">Mutual induction<\/button>\n  <button data-correct=\"false\">Electrostatics<\/button>\n  <button data-correct=\"false\">Magnetism<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q8. The instrument used to measure atmospheric pressure is:<\/p>\n  <button data-correct=\"false\">Thermometer<\/button>\n  <button data-correct=\"false\">Hygrometer<\/button>\n  <button data-correct=\"true\">Barometer<\/button>\n  <button data-correct=\"false\">Ammeter<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q9. Which colour of light has the highest frequency?<\/p>\n  <button data-correct=\"false\">Red<\/button>\n  <button data-correct=\"false\">Yellow<\/button>\n  <button data-correct=\"false\">Green<\/button>\n  <button data-correct=\"true\">Violet<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q10. The phenomenon of splitting of white light into its colours is called:<\/p>\n  <button data-correct=\"false\">Reflection<\/button>\n  <button data-correct=\"false\">Refraction<\/button>\n  <button data-correct=\"true\">Dispersion<\/button>\n  <button data-correct=\"false\">Diffraction<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q11. The chemical formula of water is:<\/p>\n  <button data-correct=\"false\">HO<\/button>\n  <button data-correct=\"true\">H2O<\/button>\n  <button data-correct=\"false\">H2O2<\/button>\n  <button data-correct=\"false\">HO2<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q12. Which gas is released during photosynthesis?<\/p>\n  <button data-correct=\"false\">Carbon dioxide<\/button>\n  <button data-correct=\"false\">Nitrogen<\/button>\n  <button data-correct=\"true\">Oxygen<\/button>\n  <button data-correct=\"false\">Hydrogen<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q13. The atomic number of Carbon is:<\/p>\n  <button data-correct=\"false\">4<\/button>\n  <button data-correct=\"true\">6<\/button>\n  <button data-correct=\"false\">8<\/button>\n  <button data-correct=\"false\">12<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q14. pH value of pure water is:<\/p>\n  <button data-correct=\"false\">0<\/button>\n  <button data-correct=\"false\">5<\/button>\n  <button data-correct=\"true\">7<\/button>\n  <button data-correct=\"false\">14<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q15. Which gas is known as &#8220;laughing gas&#8221;?<\/p>\n  <button data-correct=\"true\">Nitrous oxide<\/button>\n  <button data-correct=\"false\">Nitrogen dioxide<\/button>\n  <button data-correct=\"false\">Carbon monoxide<\/button>\n  <button data-correct=\"false\">Sulphur dioxide<\/button>\n<\/div>\n\n    <!-- FINAL SUMMARY -->\n    <div class=\"final-summary\">\n      <h3>Quiz Summary <\/h3>\n\n      <div class=\"summary-row\">\n        <span>Attempted<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-attempted\" data-summary=\"attempted\"><\/div><\/div>\n        <span data-count=\"attempted\">0<\/span>\n      <\/div>\n\n      <div class=\"summary-row\">\n        <span>Correct<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-correct\" data-summary=\"correct\"><\/div><\/div>\n        <span data-count=\"correct\">0<\/span>\n      <\/div>\n\n      <div class=\"summary-row\">\n        <span>Wrong<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-wrong\" data-summary=\"wrong\"><\/div><\/div>\n        <span data-count=\"wrong\">0<\/span>\n      <\/div>\n\n      <div class=\"summary-row\">\n        <span>Unattempted<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-unattempted\" data-summary=\"unattempted\"><\/div><\/div>\n        <span data-count=\"unattempted\">0<\/span>\n      <\/div>\n\n      <div class=\"final-score\">\n        Final Score: <span class=\"score-value\" data-score>0.0<\/span>\n      <\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n<div class=\"modal modal-obls\" id=\"modal-signup\">\n        <div class=\"modal-background\"><\/div>\n        <div class=\"modal-content\">\n           <div class=\"obls-group\" id=\"obls-group1\">\n               <div class=\"obls-blk\">\n                   <span class=\"img-box\"><img decoding=\"async\" src=\"\/img\/img-delivery.svg\" alt=\"\"><\/span>\n                   <h2 id=\"display-register-text\"><span class=\"ez-toc-section\" 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alt=\"\"><\/span>\n                            <input type=\"email\" name=\"email\" class=\"formcontrol ob-inputfield\" id=\"course-email\" required=\"\">\n                            <span class=\"floating-label\">Email Id<\/span>\n                       <\/div>\n                       <div class=\"loginnext-group\" id=\"loginnext-group\"><!-- pass and captcha -->\n                           <div class=\"formcontrol-group\">\n                                <span class=\"icon\"><img decoding=\"async\" src=\"\/img\/ic-lock.svg\" alt=\"\"><\/span>\n                                <input type=\"password\" name=\"pwd\" class=\"formcontrol ob-inputfield\" id=\"course-password\" required=\"\">\n                                <span class=\"floating-label\">Password<\/span>\n                           <\/div>\n                           <div style=\"display:none\" id=\"img-oblcaptcha\" class=\"captcha-img-blk\">\n                           <\/div>\n                           <div 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<form method=\"post\" action=\"https:\/\/login.oliveboard.in\/login\/next.php\" id=\"snf1\">\n                        <input type=\"hidden\" name=\"email\" value=\"\" id=\"lemailnext\">\n                        <\/form>\n                   <\/div><!-- end login group -->\n                   <div id=\"forgotpwd-group-abc\" class=\"lfp-group-abc forgotpwd-group-abc\"><!-- start forgotpwd group -->\n                       <h2><span class=\"ez-toc-section\" id=\"Forgot_Password\"><\/span>Forgot Password<span class=\"ez-toc-section-end\"><\/span><\/h2>\n                       <p class=\"secintro-txt\">Please enter the Email ID we will send you a Email with the link to reset the password.<\/p>\n                       <label class=\"errormsg txt-red rePassMsg\"><\/label>\n                       <div class=\"formcontrol-group formcontrol-group-fp\">\n                            <span class=\"icon\"><img decoding=\"async\" src=\"\/img\/ic-mail.svg\" alt=\"\"><\/span>\n                           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}\n    catch { return {}; }\n  }\n\n  function saveState(data) {\n    sessionStorage.setItem(STORAGE_KEY, JSON.stringify(data));\n  }\n\n  function updateUI() {\n    const unattempted = total - attempted;\n    quizContainer.querySelector('[data-count=\"attempted\"]').textContent = attempted;\n    quizContainer.querySelector('[data-count=\"correct\"]').textContent = correct;\n    quizContainer.querySelector('[data-count=\"wrong\"]').textContent = wrong;\n    quizContainer.querySelector('[data-count=\"unattempted\"]').textContent = unattempted;\n    quizContainer.querySelector('[data-summary=\"attempted\"]').style.width = (attempted \/ total) * 100 + \"%\";\n    quizContainer.querySelector('[data-summary=\"correct\"]').style.width = (correct \/ total) * 100 + \"%\";\n    quizContainer.querySelector('[data-summary=\"wrong\"]').style.width = (wrong \/ total) * 100 + \"%\";\n    quizContainer.querySelector('[data-summary=\"unattempted\"]').style.width = (unattempted \/ total) * 100 + \"%\";\n    quizContainer.querySelector('[data-score]').textContent = score.toFixed(2);\n\n    \/\/ Live score update in sticky header\n    document.getElementById('quiz-1-score-value').textContent = score.toFixed(2);\n  }\n\n  function restoreQuestion(q, chosenIndex, wasCorrect) {\n    q.dataset.answered = \"true\";\n    const buttons = q.querySelectorAll(\"button\");\n    buttons.forEach(b => b.classList.add(\"locked\"));\n    if (wasCorrect) {\n      buttons[chosenIndex].classList.add(\"correct\");\n    } else {\n      buttons[chosenIndex].classList.add(\"wrong\");\n      q.querySelector(\"[data-correct='true']\").classList.add(\"correct\");\n    }\n  }\n\n  \/\/ Restore saved answers on page load\n  const savedAnswers = loadState();\nquestions.forEach((q, qIndex) => {\n    const saved = savedAnswers[qIndex];\n    if (saved !== undefined) {\n      attempted++;\n      if (saved.correct) { correct++; }\n      else { wrong++; }\n      restoreQuestion(q, saved.chosenIndex, saved.correct);\n    }\n  });\n  score = parseFloat((correct * 1 - wrong * 0.25).toFixed(2));\n  updateUI();\n\n  \/\/ Attach click handlers\n  questions.forEach((q, qIndex) => {\n    q.querySelectorAll(\"button\").forEach((btn, btnIndex) => {\n      btn.addEventListener(\"click\", () => {\n        if (q.dataset.answered === \"true\") return;\n        q.dataset.answered = \"true\";\n        attempted++;\n\n        if (attempted > 7 && l_log == 0) {\n          $('#modal-signup').addClass('is-active');\n        }\n\n        q.querySelectorAll(\"button\").forEach(b => b.classList.add(\"locked\"));\n        const isCorrect = btn.dataset.correct === \"true\";\n\n if (isCorrect) {\n          btn.classList.add(\"correct\");\n          correct++;\n        } else {\n          btn.classList.add(\"wrong\");\n          wrong++;\n          q.querySelector(\"[data-correct='true']\").classList.add(\"correct\");\n        }\n        score = parseFloat((correct * 1 - wrong * 0.25).toFixed(2));\n\n        savedAnswers[qIndex] = { chosenIndex: btnIndex, correct: isCorrect };\n        saveState(savedAnswers);\n        updateUI();\n      });\n    });\n  });\n\n  updateUI();\n})();\n<\/script>\n\n<\/body>\n<\/html>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/test-series\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">Attempt Mock Tests for all Government Exams<\/a><\/div>\n<\/div>\n\n\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n<meta charset=\"UTF-8\">\n<link rel=\"stylesheet\" href=\"https:\/\/courses.oliveboard.in\/edge\/css\/login-modal-for-blog.css\">\n\n<style>\n#quiz-2-sticky-header {\n  position: sticky;\n  top: 0;\n  z-index: 100;\n  background: #1565c0;\n  color: #fff;\n  padding: 12px 20px;\n  border-radius: 10px 10px 0 0;\n  display: flex;\n  justify-content: space-between;\n  align-items: center;\n  font-size: 16px;\n  font-weight: bold;\n  box-shadow: 0 2px 8px rgba(0,0,0,0.2);\n  margin: -20px -20px 20px -20px;\n}\n\n#quiz-2-score-badge {\n  background: rgba(255,255,255,0.2);\n  padding: 4px 12px;\n  border-radius: 20px;\n  font-size: 15px;\n  white-space: nowrap;\n}\n#quiz-2 * { box-sizing: border-box; }\n\n#quiz-2 .quiz-container {\n  max-width: 700px;\n  margin: auto;\n  padding: 20px;\n  background: #fff;\n  border-radius: 14px;\n  box-shadow: 0 6px 16px rgba(0,0,0,0.12);\n}\n\n#quiz-2 h2 {\n  text-align: center;\n}\n\n#quiz-2 .question {\n  margin-bottom: 22px;\n}\n\n#quiz-2 .question p {\n  font-weight: bold;\n}\n\n#quiz-2 button {\n  width: 100%;\n  padding: 12px;\n  margin: 6px 0;\n  border: none;\n  border-radius: 6px;\n  background: #e0e0e0;\n  color: #000;\n  font-size: 16px;\n  cursor: pointer;\n}\n\n#quiz-2 button:hover {\n  background: #d5d5d5;\n}\n\n#quiz-2 button.correct {\n  background: #4caf50;\n  color: #000;\n}\n\n#quiz-2 button.wrong {\n  background: #f44336;\n  color: #000;\n}\n\n#quiz-2 button.locked {\n  pointer-events: none;\n}\n\n\/* SUMMARY *\/\n#quiz-2 .final-summary {\n  margin-top: 40px;\n  padding: 20px;\n  border-radius: 14px;\n  background: #fafafa;\n  border: 2px solid #4caf50;\n}\n\n#quiz-2 .final-summary h3 {\n  text-align: center;\n  margin-bottom: 20px;\n}\n\n#quiz-2 .summary-row {\n  display: grid;\n  grid-template-columns: 120px 1fr 40px;\n  gap: 10px;\n  align-items: center;\n  margin-bottom: 12px;\n  font-weight: bold;\n}\n\n#quiz-2 .summary-bar {\n  height: 14px;\n  background: #ddd;\n  border-radius: 10px;\n  overflow: hidden;\n}\n\n#quiz-2 .bar-fill {\n  height: 100%;\n  width: 0%;\n}\n\n#quiz-2 .bar-attempted { background: #2196f3; }\n#quiz-2 .bar-correct { background: #4caf50; }\n#quiz-2 .bar-wrong { background: #f44336; }\n#quiz-2 .bar-unattempted { background: #9e9e9e; width: 100%; }\n\n#quiz-2 .final-score {\n  text-align: center;\n  font-size: 22px;\n  margin-top: 20px;\n}\n\n#quiz-2 .score-value {\n  font-size: 30px;\n  margin-left: 8px;\n}\n<\/style>\n<\/head>\n\n<body>\n<div id=\"quiz-2\">\n  <div class=\"quiz-container\">\n<div id=\"quiz-2-sticky-header\">\n  <span>Science Quiz Questions &#8211; Part 2<\/span>\n  <span id=\"quiz-2-score-badge\">Score: <strong id=\"quiz-2-score-value\">0.00<\/strong><\/span>\n<\/div>\n\n    <!-- QUESTIONS -->\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q16. Rust is chemically:<\/p>\n  <button data-correct=\"false\">Iron carbonate<\/button>\n  <button data-correct=\"false\">Iron sulphate<\/button>\n  <button data-correct=\"true\">Iron oxide<\/button>\n  <button data-correct=\"false\">Iron chloride<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q17. The hardest natural substance is:<\/p>\n  <button data-correct=\"false\">Gold<\/button>\n  <button data-correct=\"false\">Iron<\/button>\n  <button data-correct=\"true\">Diamond<\/button>\n  <button data-correct=\"false\">Platinum<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q18. Which metal is liquid at room temperature?<\/p>\n  <button data-correct=\"false\">Sodium<\/button>\n  <button data-correct=\"true\">Mercury<\/button>\n  <button data-correct=\"false\">Aluminium<\/button>\n  <button data-correct=\"false\">Copper<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q19. Ozone layer protects Earth from:<\/p>\n  <button data-correct=\"false\">Infrared rays<\/button>\n  <button data-correct=\"true\">Ultraviolet rays<\/button>\n  <button data-correct=\"false\">X-rays<\/button>\n  <button data-correct=\"false\">Gamma rays<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q20. The chemical name of common salt is:<\/p>\n  <button data-correct=\"false\">Sodium carbonate<\/button>\n  <button data-correct=\"true\">Sodium chloride<\/button>\n  <button data-correct=\"false\">Sodium hydroxide<\/button>\n  <button data-correct=\"false\">Sodium sulphate<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q21. Which acid is present in vinegar?<\/p>\n  <button data-correct=\"false\">Citric acid<\/button>\n  <button data-correct=\"false\">Lactic acid<\/button>\n  <button data-correct=\"true\">Acetic acid<\/button>\n  <button data-correct=\"false\">Tartaric acid<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q22. The process of conversion of solid directly into gas is called:<\/p>\n  <button data-correct=\"false\">Evaporation<\/button>\n  <button data-correct=\"false\">Condensation<\/button>\n  <button data-correct=\"true\">Sublimation<\/button>\n  <button data-correct=\"false\">Melting<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q23. LPG mainly consists of:<\/p>\n  <button data-correct=\"false\">Methane<\/button>\n  <button data-correct=\"false\">Ethane<\/button>\n  <button data-correct=\"true\">Butane and Propane<\/button>\n  <button data-correct=\"false\">Acetylene<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q24. Which element is used in electric bulb filaments?<\/p>\n  <button data-correct=\"false\">Copper<\/button>\n  <button data-correct=\"true\">Tungsten<\/button>\n  <button data-correct=\"false\">Aluminium<\/button>\n  <button data-correct=\"false\">Silver<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q25. Baking soda is chemically:<\/p>\n  <button data-correct=\"false\">Sodium carbonate<\/button>\n  <button data-correct=\"true\">Sodium bicarbonate<\/button>\n  <button data-correct=\"false\">Calcium carbonate<\/button>\n  <button data-correct=\"false\">Potassium chloride<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q26. The powerhouse of the cell is:<\/p>\n  <button data-correct=\"false\">Nucleus<\/button>\n  <button data-correct=\"false\">Ribosome<\/button>\n  <button data-correct=\"true\">Mitochondria<\/button>\n  <button data-correct=\"false\">Lysosome<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q27. Which blood group is called the universal donor?<\/p>\n  <button data-correct=\"false\">A<\/button>\n  <button data-correct=\"false\">B<\/button>\n  <button data-correct=\"false\">AB<\/button>\n  <button data-correct=\"true\">O<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q28. The largest organ of the human body is:<\/p>\n  <button data-correct=\"false\">Liver<\/button>\n  <button data-correct=\"false\">Lung<\/button>\n  <button data-correct=\"true\">Skin<\/button>\n  <button data-correct=\"false\">Heart<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q29. Which vitamin is produced when skin is exposed to sunlight?<\/p>\n  <button data-correct=\"false\">Vitamin A<\/button>\n  <button data-correct=\"false\">Vitamin B<\/button>\n  <button data-correct=\"false\">Vitamin C<\/button>\n  <button data-correct=\"true\">Vitamin D<\/button>\n<\/div>\n\n<div class=\"question\" data-answered=\"false\">\n  <p>Q30. DNA stands for:<\/p>\n  <button data-correct=\"true\">Deoxyribonucleic acid<\/button>\n  <button data-correct=\"false\">Diribonucleic acid<\/button>\n  <button data-correct=\"false\">Deoxyribonitric acid<\/button>\n  <button data-correct=\"false\">Dinitric acid<\/button>\n<\/div>\n\n    <!-- FINAL SUMMARY -->\n    <div class=\"final-summary\">\n      <h3>Quiz Summary <\/h3>\n\n      <div class=\"summary-row\">\n        <span>Attempted<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-attempted\" data-summary=\"attempted\"><\/div><\/div>\n        <span data-count=\"attempted\">0<\/span>\n      <\/div>\n\n      <div class=\"summary-row\">\n        <span>Correct<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-correct\" data-summary=\"correct\"><\/div><\/div>\n        <span data-count=\"correct\">0<\/span>\n      <\/div>\n\n      <div class=\"summary-row\">\n        <span>Wrong<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-wrong\" data-summary=\"wrong\"><\/div><\/div>\n        <span data-count=\"wrong\">0<\/span>\n      <\/div>\n\n      <div class=\"summary-row\">\n        <span>Unattempted<\/span>\n        <div class=\"summary-bar\"><div class=\"bar-fill bar-unattempted\" data-summary=\"unattempted\"><\/div><\/div>\n        <span data-count=\"unattempted\">0<\/span>\n      <\/div>\n\n      <div class=\"final-score\">\n        Final Score: <span class=\"score-value\" data-score>0.0<\/span>\n      <\/div>\n    <\/div>\n\n  <\/div>\n<\/div>\n<div class=\"modal modal-obls\" id=\"modal-signup\">\n        <div class=\"modal-background\"><\/div>\n        <div class=\"modal-content\">\n           <div class=\"obls-group\" id=\"obls-group1\">\n               <div class=\"obls-blk\">\n                   <span class=\"img-box\"><img decoding=\"async\" src=\"\/img\/img-delivery.svg\" alt=\"\"><\/span>\n                   <h2 id=\"display-register-text\"><span class=\"ez-toc-section\" id=\"Sign_Up-2\"><\/span>Sign Up<span class=\"ez-toc-section-end\"><\/span><\/h2>\n                   <div class=\"loginas-group loginas-group1 loginas-group-single\">\n <div id=\"g_id_onload\" data-client_id=\"506321490093-i3j96ah9gn1sv3khntnd1rnv5jebt5j4.apps.googleusercontent.com\" ,=\"\" data-use_fedcm_for_prompt=\"true\" data-callback=\"handleOnetapResponse\">\n    <\/div>\n    <div class=\"g_id_signin\" data-type=\"standard\"><div class=\"S9gUrf-YoZ4jf\" style=\"position: relative;\"><div><\/div><iframe src=\"https:\/\/accounts.google.com\/gsi\/button?type=standard&amp;is_fedcm_supported=true&amp;client_id=506321490093-i3j96ah9gn1sv3khntnd1rnv5jebt5j4.apps.googleusercontent.com&amp;iframe_id=gsi_437394_8652&amp;cas=pwXumGxyCMNtIbjaV30qchi2A1vUar%2Faz%2FOE5HQ%2B0Zc\" class=\"L5Fo6c-PQbLGe\" allow=\"identity-credentials-get\" id=\"gsi_437394_8652\" title=\"Sign in with Google Button\" style=\"display: block; position: relative; top: 0px; left: 0px; height: 44px; width: 204px; 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}\n      else { wrong++; }\n      restoreQuestion(q, saved.chosenIndex, saved.correct);\n    }\n  });\n  score = parseFloat((correct * 1 - wrong * 0.25).toFixed(2));\n  updateUI();\n\n  \/\/ Attach click handlers\n  questions.forEach((q, qIndex) => {\n    q.querySelectorAll(\"button\").forEach((btn, btnIndex) => {\n      btn.addEventListener(\"click\", () => {\n        if (q.dataset.answered === \"true\") return;\n        q.dataset.answered = \"true\";\n        attempted++;\n\n        if (attempted > 7 && l_log == 0) {\n          $('#modal-signup').addClass('is-active');\n        }\n\n        q.querySelectorAll(\"button\").forEach(b => b.classList.add(\"locked\"));\n        const isCorrect = btn.dataset.correct === \"true\";\n\n if (isCorrect) {\n          btn.classList.add(\"correct\");\n          correct++;\n        } else {\n          btn.classList.add(\"wrong\");\n          wrong++;\n          q.querySelector(\"[data-correct='true']\").classList.add(\"correct\");\n        }\n        score = parseFloat((correct * 1 - wrong * 0.25).toFixed(2));\n\n        savedAnswers[qIndex] = { chosenIndex: btnIndex, correct: isCorrect };\n        saveState(savedAnswers);\n        updateUI();\n      });\n    });\n  });\n\n  updateUI();\n})();\n<\/script>\n\n<\/body>\n<\/html>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/science-and-technology-current-affairs\/?ref=contmk-blog-sq\">Download Science &amp; Technology Current Affairs<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-are-the-top-government-exams-in-which-science-is-asked\"><span class=\"ez-toc-section\" id=\"What_are_the_top_Government_exams_in_which_science_is_asked\"><\/span>What are the top Government exams in which science is asked?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Science is majorly asked in SSC and Railway&#8217;s exams under the General Awareness\/General Knowledge section, mainly covering physics, chemistry and biology.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Exam Name<\/strong><\/td><td><strong>Conducting Body<\/strong><\/td><td><strong>Stages<\/strong><\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/ssc-cgl\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CGL<\/a><\/td><td>Staff Selection Commission<\/td><td>Tier 1 (General Awareness)<\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/ssc-chsl\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">SSC CHSL<\/a><\/td><td>Staff Selection Commission<\/td><td>Tier 1 (General Awareness)<\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/ssc-mts\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">SSC MTS<\/a><\/td><td>Staff Selection Commission<\/td><td>Paper 1 (General Awareness)<\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/ssc-gd-constable\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">SSC GD Constable<\/a><\/td><td>Staff Selection Commission<\/td><td>CBT (General Knowledge)<\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/railway-rrb-ntpc\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">RRB NTPC<\/a><\/td><td>Railway Recruitment Board<\/td><td>CBT 1 &amp; CBT 2 (General Awareness)<\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/railways-rrb-group-d\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">RRB Group D<\/a><\/td><td>Railway Recruitment Board<\/td><td>CBT (General Science &amp; GK)<\/td><\/tr><tr><td><a href=\"https:\/\/www.oliveboard.in\/railways-rrb-alp\/?ref=contmk-sq\" target=\"_blank\" rel=\"noreferrer noopener\">RRB ALP<\/a><\/td><td>Railway Recruitment Board<\/td><td>CBT 2 (General Awareness)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.oliveboard.in\/blog\/quiz-questions\/?ref=contmk-blog-sq\" target=\"_blank\" rel=\"noreferrer noopener\">Attempt Quiz Questions<\/a><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<ul class=\"wp-block-latest-posts__list is-grid columns-3 wp-block-latest-posts\"><li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/error-spotting\/\">Error Spotting in English Types, Short Tricks, and Tips<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/ssc-chsl-marks-calculator\/\">SSC CHSL Marks Calculator 2026, Calculate Tier 1 &amp; 2 Scores Online<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/error-spotting-questions\/\">Error Spotting Questions for SSC CGL, Download Free Ebook<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/sentence-improvement-questions-for-ssc-cgl\/\">Sentence Improvement Questions for SSC CGL, Attempt Now<\/a><\/li>\n<li><a class=\"wp-block-latest-posts__post-title\" href=\"https:\/\/www.oliveboard.in\/blog\/how-did-air-1-use-oliveboard-to-crack-ssc-cgl\/\">How did AIR 1 use Oliveboard to crack SSC CGL 2026? Mock Data Analysis<\/a><\/li>\n<\/ul>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>Science is asked in exams like SSC, Railways, and various UP Police Exams. It is an important subject in most<\/p>\n","protected":false},"author":65,"featured_media":239768,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[555,5217,10231],"tags":[],"class_list":["post-239766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-railways-rrb","category-ssc-prep","category-ssc-railways","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.6 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Science Quiz for SSC &amp; Railway Exams, Download Free E-book<\/title>\n<meta name=\"description\" content=\"Solve live Science Quiz for SSC &amp; Railway Exams with important Physics, Chemistry, and Biology MCQs. 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