Single Choice
Not Set
Q12. How do we write HTML comments?
ID: #4781
HTML Basic MCQ
197 views
Question Info
#4781Q ID
Not SetDifficulty
HTML Basic MCQTopic
Your Answer
Choose the Best Option
Click any option to instantly check if you're correct.
-
A
<</span> <span class="option-status correct-option">✔</span> <span class="option-status wrong-option">✖</span> </li> <li class="options-list-item" data-key="B"> <span class="option-symbol">B</span> <span class="option-text"><pre class = "prettyprint"><xmp> <!</span> <span class="option-status correct-option">✔</span> <span class="option-status wrong-option">✖</span> </li> <li class="options-list-item" data-key="C"> <span class="option-symbol">C</span> <span class="option-text"><pre class = "prettyprint"><xmp> </</span> <span class="option-status correct-option">✔</span> <span class="option-status wrong-option">✖</span> </li> <li class="options-list-item" data-key="D"> <span class="option-symbol">D</span> <span class="option-text"><pre class = "prettyprint"><xmp> </</span> <span class="option-status correct-option">✔</span> <span class="option-status wrong-option">✖</span> </li> </ul> </div> <!-- Payload for JS --> <script type="application/json" id="mcq-payload-4781">{"qid":4781,"mode":"single_choice","answer":"B","options":{"A":"\u003Cpre class = \"prettyprint\"\u003E\u003Cxmp\u003E\r\n\u003C","B":"\u003Cpre class = \"prettyprint\"\u003E\u003Cxmp\u003E\r\n\u003C!","C":"\u003Cpre class = \"prettyprint\"\u003E\u003Cxmp\u003E\r\n\u003C/","D":"\u003Cpre class = \"prettyprint\"\u003E\u003Cxmp\u003E\r\n\u003C/"}}</script> <!-- ANSWER / EXPLANATION CARD --> <div id="answer-box-4781" class="mcq-card mcq-answer-card"> <div class="answer-badge" data-role="answer-badge"> <i class="fa fa-check-circle"></i> <span data-role="answer-badge-text">Correct Answer</span> </div> <h3 class="section-title">Explanation</h3> <div class="answer-explanation"> <p>Browsers will ignore comments in a code, and comments are used to add notes or explanations to the code for the benefit of the developer or other users who may be reading the code. <br>There are two types of comments in HTML: single line comments, which are denoted by the <!-- and --> characters, and multiple line comments, which are denoted by the /* and */ characters.<br> To add a comment in the code, you can place the text between these characters and it will not be visible in the user's browser. <br>Comments are a useful tool for organizing and documenting code, and they can help make it easier to understand and maintain.</p></div> </div> <div class="mcq-card"> <div class="section-label"><i class="fa fa-arrow-right-arrow-left"></i> Continue Practice</div> <div class="mcq-nav-row" style="margin-top:12px;"> <a href="/question/mcq/4780" class="nav-btn"><i class="fa fa-arrow-left"></i> Previous Question</a> <a href="/question/mcq/4782" class="nav-btn nav-next">Next Question <i class="fa fa-arrow-right"></i></a> </div> </div> <div class="mcq-card"> <div class="section-label"><i class="fa fa-share-nodes"></i> Share</div> <h3 class="section-title" style="margin-bottom:4px;">Share This Question</h3> <p class="section-sub">Challenge a friend or share with your study group.</p> <div class="share-actions"> <a target="_blank" href="https://api.whatsapp.com/send?text=Check+this+MCQ%3A+https%3A%2F%2Fwww.rummanansari.com%2Fquestion%2Fmcq%2F4781" class="share-btn share-btn-wa"><i class="fa-brands fa-whatsapp"></i> WhatsApp</a> <button type="button" class="share-btn" id="copyQuestionLinkBtn"><i class="fa fa-copy"></i> Copy Link</button> </div> </div> <div class="mcq-card"> <div class="section-label"><i class="fa fa-circle-question"></i> More from This Topic</div> <h2 class="section-title" style="margin-bottom:16px;">Related MCQ Questions</h2> <div class="related-q-list"> <a href="/question/mcq/4143" class="related-q-item"><i class="fa fa-chevron-right"></i> The correct sequence of HTML tags for starting a webpage is</a> <a href="/question/mcq/4141" class="related-q-item"><i class="fa fa-chevron-right"></i> HTML stands for</a> <a href="/question/mcq/4773" class="related-q-item"><i class="fa fa-chevron-right"></i> Who is the originator of HTML?</a> <a href="/question/mcq/4813" class="related-q-item"><i class="fa fa-chevron-right"></i> What does the HTML5 &amp;lt;address&amp;gt; element serve? </a> <a href="/question/mcq/4797" class="related-q-item"><i class="fa fa-chevron-right"></i> In HTML, how do you add a background colour?</a> <a href="/question/mcq/4795" class="related-q-item"><i class="fa fa-chevron-right"></i> Which character does an HTML tag's closure represent?</a> <a href="/question/mcq/4142" class="related-q-item"><i class="fa fa-chevron-right"></i> HTML files are saved by default with the extension?</a> <a href="/question/mcq/4786" class="related-q-item"><i class="fa fa-chevron-right"></i> HTML is a subset of HTML.</a> <a href="/question/mcq/4811" class="related-q-item"><i class="fa fa-chevron-right"></i> What does the HTML &amp;lt; hr/ &amp;gt; element mean?</a> <a href="/question/mcq/4805" class="related-q-item"><i class="fa fa-chevron-right"></i> What other sorts of bulleted or unordered lists are there in HTML?</a> </div> </div> </main> <!-- RIGHT COLUMN --> <aside class="mcq-right-col"> <div class="subject-card"> <div class="subject-card-header"> <div class="subject-icon-wrap"> <i class="fa fa-graduation-cap" style="color:rgba(13,110,253,.7);"></i> </div> <h3 class="subject-name">Computer Science and Engineering</h3> <p class="subject-desc">Explore the dynamic field of Computer Science and Engineering with our comprehensive course. Learn about algorithms, dat…</p> </div> <div class="subject-card-body"> <a href="/payment/enroll/7" class="btn-enroll"><i class="fa fa-plus-circle"></i> Enroll in Subject</a> </div> </div> <div class="mcq-card" style="padding:18px 16px;"> <div class="section-label" style="margin-bottom:12px;"><i class="fa fa-sitemap"></i> Related Topics</div> <a href="/article/read/7/319" class="right-topic-link active"> <i class="fa fa-circle-dot"></i> HTML Basic MCQ </a> <a href="/article/read/7/335" class="right-topic-link "> <i class="fa fa-circle"></i> HTML List MCQ </a> <a href="/article/read/7/320" class="right-topic-link "> <i class="fa fa-circle"></i> Structuring Web Documents MCQ </a> </div> </aside> </div> </div> <style> footer.site-footer, footer.site-footer a, footer.site-footer li, footer.site-footer p, footer.site-footer span, footer.site-footer h5, .navbar .dropdown-menu, .navbar .dropdown-menu a, .navbar .dropdown-menu li, .navbar .dropdown-menu p { color: var(--text-color) !important; background-color: var(--header-footer-bg) !important; } footer.site-footer a:hover, .navbar .dropdown-menu a:hover { color: var(--link-hover-color) !important; } footer.site-footer hr { border-color: var(--shadow-color) !important; } footer.site-footer i { color: var(--text-color) !important; } footer.site-footer i:hover { color: var(--link-hover-color) !important; } .site-footer { padding: 48px 24px 24px; margin-top: 40px; border-top: 1px solid var(--border-color); } .site-footer .footer-inner { width: 100%; max-width: 100%; margin: 0; } .site-footer .footer-top { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; } .site-footer h5 { font-size: 1.2rem; font-weight: 700; margin-bottom: 16px; } .site-footer p, .site-footer li, .site-footer a { font-size: 0.98rem; line-height: 1.7; text-decoration: none; } .site-footer ul { padding-left: 0; margin-bottom: 0; list-style: none; } .site-footer .social-links a { display: inline-flex; align-items: center; justify-content: center; margin-right: 14px; font-size: 1rem; } .site-footer .footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 20px; margin-top: 28px; border-top: 1px solid var(--shadow-color); } .site-footer .footer-bottom-links a { margin-left: 18px; } .site-footer .footer-bottom-links a:first-child { margin-left: 0; } @media (max-width: 991.98px) { .site-footer { padding: 36px 16px 20px; } .site-footer .footer-top { grid-template-columns: 1fr; gap: 24px; } .site-footer .footer-bottom { flex-direction: column; align-items: flex-start; } .site-footer .footer-bottom-links a { margin-left: 0; margin-right: 16px; } } </style> <footer class="site-footer"> <div class="footer-inner"> <div class="footer-top"> <div> <h3>About RummanAnsari</h3> <p>Your go-to platform for online courses, GK, blogs, and learning resources.</p> </div> <div> <h3>Quick Links</h3> <ul> <li><a href="/">Home</a></li> <li><a href="/blog/">Blog</a></li> <li><a href="https://www.rummanansari.com/course?course_type=paid">Topic</a></li> <li><a href="/course">Courses</a></li> </ul> </div> <div> <h3>Courses</h3> <ul> <li><a href="https://www.rummanansari.com/course?course_type=free">Free Courses</a></li> <li><a href="https://www.rummanansari.com/course?course_type=paid">Paid Courses</a></li> </ul> <h3 class="mt-4">Connect with Us</h3> <div class="social-links"> <a href="https://www.facebook.com/merummanansari/" aria-label="Facebook Profile"><i class="fab fa-facebook-f"></i></a> <a href="https://x.com/merummanansari" aria-label="Twitter Profile"><i class="fab fa-twitter"></i></a> <a href="https://www.linkedin.com/in/rummanansari/" aria-label="LinkedIn Profile"><i class="fab fa-linkedin-in"></i></a> <a href="https://www.instagram.com/instra.ansari/" aria-label="Instagram Profile"><i class="fab fa-instagram"></i></a> </div> </div> </div> <div class="footer-bottom"> <p class="mb-0">© 2026 RummanAnsari. All rights reserved.</p> <div class="footer-bottom-links"> <a href="/about/">About</a> <a href="/about/privacy-policy/">Privacy</a> <a href="/about/terms-and-conditions/">Terms</a> </div> </div> </div> </footer> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.1/dist/js/bootstrap.bundle.min.js"></script> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js"></script> <!--<script src="/assets/js/new-scripts.js"></script>--> <!-- below two for editor--> <link href="https://cdnjs.cloudflare.com/ajax/libs/summernote/0.8.20/summernote-lite.min.css" rel="stylesheet"> <script src="https://cdnjs.cloudflare.com/ajax/libs/summernote/0.8.20/summernote-lite.min.js"></script> <!--<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>--> <script> document.addEventListener('DOMContentLoaded', function () { const body = document.body; const toggleBtn = document.getElementById('sidebarToggleBtn'); const closeBtn = document.getElementById('closeSidebarBtn'); const overlay = document.getElementById('sidebarOverlay'); const mobileBreakpoint = 992; function isMobile() { return window.innerWidth < mobileBreakpoint; } function applySidebarState() { const saved = localStorage.getItem('sidebarCollapsed'); if (isMobile()) { body.classList.remove('sidebar-collapsed'); body.classList.remove('sidebar-mobile-open'); } else { body.classList.remove('sidebar-mobile-open'); if (saved === 'true') { body.classList.add('sidebar-collapsed'); } else { body.classList.remove('sidebar-collapsed'); } } } if (toggleBtn) { toggleBtn.addEventListener('click', function () { if (isMobile()) { body.classList.toggle('sidebar-mobile-open'); } else { body.classList.toggle('sidebar-collapsed'); localStorage.setItem( 'sidebarCollapsed', body.classList.contains('sidebar-collapsed') ? 'true' : 'false' ); } }); } if (closeBtn) { closeBtn.addEventListener('click', function () { body.classList.remove('sidebar-mobile-open'); }); } if (overlay) { overlay.addEventListener('click', function () { body.classList.remove('sidebar-mobile-open'); }); } window.addEventListener('resize', applySidebarState); applySidebarState(); }); document.addEventListener('DOMContentLoaded', function () { const body = document.body; const themeButtons = document.querySelectorAll('[data-theme-button]'); }); </script> <script type="module"> import { initializeApp } from "https://www.gstatic.com/firebasejs/10.12.2/firebase-app.js"; import { getAuth, GoogleAuthProvider, signInWithPopup } from "https://www.gstatic.com/firebasejs/10.12.2/firebase-auth.js"; const firebaseConfig = { apiKey: "AIzaSyCNteyUk6yYXnx275jqn09fGPtjpnir5pY", authDomain: "rummanansari-01.firebaseapp.com", projectId: "rummanansari-01", storageBucket: "rummanansari-01.firebasestorage.app", messagingSenderId: "958581859518", appId: "1:958581859518:web:ea2b17c10640eb8747eaef" }; const app = initializeApp(firebaseConfig); const auth = getAuth(app); const provider = new GoogleAuthProvider(); const googleLoginButtons = document.querySelectorAll('.googleLoginBtn'); googleLoginButtons.forEach(function (googleLoginBtn) { googleLoginBtn.addEventListener('click', async function () { try { const result = await signInWithPopup(auth, provider); const user = result.user; const response = await fetch('/login/google', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ email: user.email || '', first_name: user.displayName ? user.displayName.split(' ')[0] : '', last_name: user.displayName ? user.displayName.split(' ').slice(1).join(' ') : '', profile_image: user.photoURL || '', google_uid: user.uid }) }); const rawText = await response.text(); console.log('Server response:', rawText); let data; try { data = JSON.parse(rawText); } catch (e) { alert('Server is not returning valid JSON. Check console.'); return; } if (data.status === 'success') { window.location.href = data.redirect || '/dashboard'; } else { alert(data.message || 'Google login failed.'); } } catch (error) { console.error('Google login error:', error); alert(error.message || 'Unable to login with Google.'); } }); }); </script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/highlight.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/php.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/javascript.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/json.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/xml.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/csharp.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/css.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/sql.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/languages/java.min.js"></script> <script> document.addEventListener('DOMContentLoaded', function () { document.querySelectorAll('.article-content pre code').forEach(function (block) { if (window.hljs) { hljs.highlightElement(block); } }); }); </script> </body> </html> <script> document.addEventListener("DOMContentLoaded", function () { const qid = 4781; const payloadEl = document.getElementById("mcq-payload-" + qid); const payload = payloadEl ? JSON.parse(payloadEl.textContent) : { mode: "single_choice" }; const answerBox = document.getElementById("answer-box-" + qid); const interactionBox = document.getElementById("answer-interaction-" + qid); function revealAnswer() { if (answerBox) { answerBox.style.display = "block"; setTimeout(function () { window.scrollTo({ top: answerBox.offsetTop - 90, behavior: "smooth" }); }, 120); } } function setFeedback(isCorrect, textOk, textBad) { const el = interactionBox.querySelector('[data-role="feedback"]'); if (!el) return; el.classList.remove("ok", "bad"); el.classList.add("show", isCorrect ? "ok" : "bad"); el.textContent = isCorrect ? (textOk || "Correct! 🎉") : (textBad || "Not quite — check the explanation below."); } /* ── SINGLE CHOICE ── */ if (payload.mode === "single_choice") { const items = interactionBox.querySelectorAll(".options-list-item"); items.forEach(function (item) { item.addEventListener("click", function () { const selectedKey = this.dataset.key; const correct = (payload.answer || "").trim().toUpperCase(); items.forEach(function (li) { li.classList.remove("correct-selected", "wrong-selected"); const ok = li.querySelector(".correct-option"); const bad = li.querySelector(".wrong-option"); if (ok) ok.style.display = "none"; if (bad) bad.style.display = "none"; }); if (selectedKey === correct) { this.classList.add("correct-selected"); const ok = this.querySelector(".correct-option"); if (ok) ok.style.display = "inline"; } else { this.classList.add("wrong-selected"); const bad = this.querySelector(".wrong-option"); if (bad) bad.style.display = "inline"; } revealAnswer(); }); }); } /* ── MULTIPLE CHOICE ── */ if (payload.mode === "multi_choice") { const checkboxes = interactionBox.querySelectorAll(".option-check"); const items = interactionBox.querySelectorAll(".options-list-item"); items.forEach(function (item) { item.addEventListener("click", function (e) { if (e.target.tagName.toLowerCase() === "input") return; const cb = this.querySelector(".option-check"); cb.checked = !cb.checked; this.classList.toggle("picked", cb.checked); }); }); checkboxes.forEach(function (cb) { cb.addEventListener("change", function () { cb.closest(".options-list-item").classList.toggle("picked", cb.checked); }); }); const btn = interactionBox.querySelector('[data-role="check-btn"]'); if (btn) btn.addEventListener("click", function () { const correctSet = new Set((payload.answer || "").split(",").map(s => s.trim().toUpperCase()).filter(Boolean)); let allCorrect = true; items.forEach(function (li) { const key = li.dataset.key; const cb = li.querySelector(".option-check"); const isPicked = cb.checked; const shouldBePicked = correctSet.has(key); li.classList.remove("correct-selected", "wrong-selected"); const ok = li.querySelector(".correct-option"); const bad = li.querySelector(".wrong-option"); if (ok) ok.style.display = "none"; if (bad) bad.style.display = "none"; if (shouldBePicked) { li.classList.add("correct-selected"); if (ok) ok.style.display = "inline"; if (!isPicked) allCorrect = false; } else if (isPicked) { li.classList.add("wrong-selected"); if (bad) bad.style.display = "inline"; allCorrect = false; } }); setFeedback(allCorrect); revealAnswer(); }); } /* ── TEXT INPUT (short answer / fill blank / one word) ── */ if (payload.mode === "text_input") { const btn = interactionBox.querySelector('[data-role="check-btn"]'); const input = interactionBox.querySelector('[data-role="text-input"]'); const wrap = interactionBox.querySelector('[data-role="text-wrap"]'); if (btn) btn.addEventListener("click", function () { const val = (input.value || "").trim().toLowerCase(); const accepted = payload.accepted || []; const isCorrect = accepted.includes(val) && val !== ""; wrap.classList.remove("correct", "incorrect"); wrap.classList.add(isCorrect ? "correct" : "incorrect"); setFeedback(isCorrect); revealAnswer(); }); if (input) input.addEventListener("keydown", function (e) { if (e.key === "Enter") btn.click(); }); } /* ── ORDER (drag & drop / ranking, tap-to-order) ── */ if (payload.mode === "order") { const poolItems = interactionBox.querySelectorAll('[data-role="order-pool"] .order-item'); const slots = interactionBox.querySelectorAll('[data-role="order-slots"] .order-slot'); const checkBtn = interactionBox.querySelector('[data-role="check-btn"]'); let filledCount = 0; function firstEmptySlot() { for (const s of slots) if (!s.classList.contains("filled")) return s; return null; } poolItems.forEach(function (item) { item.addEventListener("click", function () { if (this.classList.contains("used")) return; const slot = firstEmptySlot(); if (!slot) return; slot.classList.add("filled"); slot.dataset.key = this.dataset.key; slot.querySelector('[data-role="slot-text"]').textContent = this.dataset.key + ". " + this.textContent.replace(this.dataset.key + ".", "").trim(); this.classList.add("used"); filledCount++; checkBtn.disabled = (filledCount !== slots.length); }); }); slots.forEach(function (slot) { slot.addEventListener("click", function () { if (!this.classList.contains("filled")) return; const key = this.dataset.key; const poolItem = interactionBox.querySelector('[data-role="order-pool"] .order-item[data-key="' + key + '"]'); if (poolItem) poolItem.classList.remove("used"); this.classList.remove("filled", "correct", "incorrect"); this.removeAttribute("data-key"); this.querySelector('[data-role="slot-text"]').textContent = "Empty"; filledCount--; checkBtn.disabled = (filledCount !== slots.length); }); }); checkBtn.addEventListener("click", function () { const correctOrder = payload.correctOrder || []; let allCorrect = true; slots.forEach(function (slot, idx) { const expected = correctOrder[idx]; const actual = slot.dataset.key; slot.classList.remove("correct", "incorrect"); if (actual === expected) { slot.classList.add("correct"); } else { slot.classList.add("incorrect"); allCorrect = false; } }); setFeedback(allCorrect, "Perfect order! 🎉", "Order isn't quite right — see the correct sequence below."); revealAnswer(); }); } /* ── MATCHING ── */ if (payload.mode === "matching") { const rows = interactionBox.querySelectorAll('[data-role="match-rows"] .match-row'); const btn = interactionBox.querySelector('[data-role="check-btn"]'); const pairs = payload.pairs || {}; btn.addEventListener("click", function () { let allCorrect = true; rows.forEach(function (row) { const key = row.dataset.key; const select = row.querySelector(".match-select"); const chosen = select.value.trim(); const correctRight = (pairs[key] || {}).right || ""; row.classList.remove("correct", "incorrect"); if (chosen !== "" && chosen === correctRight) { row.classList.add("correct"); } else { row.classList.add("incorrect"); allCorrect = false; } }); setFeedback(allCorrect); revealAnswer(); }); } /* ── HOTSPOT ── */ if (payload.mode === "hotspot") { const markers = interactionBox.querySelectorAll(".hotspot-marker"); markers.forEach(function (marker) { marker.addEventListener("click", function () { const key = this.dataset.key; const correct = (payload.correct || "").trim().toUpperCase(); markers.forEach(function (m) { m.classList.remove("correct", "wrong"); }); if (key === correct) { this.classList.add("correct"); } else { this.classList.add("wrong"); const correctMarker = interactionBox.querySelector('.hotspot-marker[data-key="' + correct + '"]'); if (correctMarker) correctMarker.classList.add("correct"); } setFeedback(key === correct); revealAnswer(); }); }); } /* ── FREE TEXT / MEDIA RESPONSE (no auto-grading) ── */ if (payload.mode === "free_text" || payload.mode === "media_response") { const btn = interactionBox.querySelector('[data-role="reveal-btn"]'); if (btn) btn.addEventListener("click", revealAnswer); } /* ── Copy link ── */ const copyBtn = document.getElementById("copyQuestionLinkBtn"); if (copyBtn) { copyBtn.addEventListener("click", function () { navigator.clipboard.writeText(window.location.href).then(function () { const orig = copyBtn.innerHTML; copyBtn.innerHTML = '<i class="fa fa-check"></i> Copied!'; setTimeout(function () { copyBtn.innerHTML = orig; }, 1400); }); }); } document.querySelectorAll(".right-topic-link.active").forEach(function (el) { el.style.borderColor = "rgba(13,110,253,.35)"; el.style.background = "rgba(13,110,253,.07)"; el.style.color = "var(--link-color)"; }); }); </script>